VTech Telecommunications 80-7597-01 WiFi Gateway User Manual 2

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MP252 Multimedia Home Gateway
13. Remote MP252 Management
Figure 13-5: Create Self Signed X509 Certificate Screen
c.
d.
Enter the fields as required, and then click Generate; a message appears notifying
you that MP252 is generating the certificate.
After a few moments, click Refresh; the 'New Self Signed X509 Certificate' screen
appears.
Figure 13-6: New Self Signed X509 Certificate Screen
e.
Click OK; the new certificate appears listed in the 'Certificates' screen.
Figure 13-7: Newly Created Self-Signed Certificate
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f.
In the 'Certificates' screen, click the Download
icon corresponding to the new
self-signed certificate that you created; the 'File Download' window appears.
Figure 13-8: File Download Window
g.
Click Save, and then browse to the folder to where you want to save the file; the file
is saved as a *.crt file.
3.
Configure the Apache server, by configuring the SSLCACertificateFile parameter to
point to the location where the certificate file is located. Since this is a self-signed
certificate, you are also considered the CA.
4.
Load the self-signed certificate to MP252:
a.
In the 'Certificates' screen, click the Upload Certificate link; the ‘Load MP252’s
Local Certificate’ screen appears.
Figure 13-9: Load MP252’s Local Certificate
b.
5.
Click Browse, locate the certification file that you created, and then click Upload to
load the file.
Load the CA’s certificate to MP252:
a.
Select the CA’s tab; the ‘CA’s’ screen appears.
Figure 13-10: CA's Certificates Page
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b.
Click the New
icon; the ‘Load CA’s Certificate’ screen appears.
Figure 13-11: Load CA's Certificate Page
c.
6.
Click Browse, locate the CA certification file that you created, and then click
Upload to load the file.
Configure the Apache server, using the following parameters:
•
SSLCACertificateFile: Set the path to the CA’s certificate.
•
SSLCertificateFile: Set the path to your signed certificate.
•
SSLCertificateKeyFile: Set the path to your private key.
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13.4
13. Remote MP252 Management
Remote Configuration and Management Interfaces
MP252 supports the following remote configuration and management interfaces:
Web server (GUI) over HTTP/HTTPS
TR-069 and TR-104
SNMP
Syslog
Firmware or configuration file download through HTTP/HTTPS and FTP/TFTP
CLI over Telnet/SSH
The table below lists the possible operations over these different interfaces:
Table 13-5: Operations per Configuration/Management Interface
Operation
Web GUI
TR-069
SNMP
Syslog
File D/L
CLI
Configuration Update
Yes
Yes
Yes
No
Yes
Yes
Firmware Upgrade
Yes
Yes
Yes
No
Yes
Yes
Status Monitoring
Yes
Yes
Yes
No
No
Yes
Debugging and
Diagnostics
Yes
No
No
Yes
No
Yes
Service providers can choose to combine several management interfaces, for example,
automatic file download for configuration and firmware updates plus SNMP for alarms.
13.4.1 Embedded Web Server
MP252 provides an embedded Web server with a rich Graphical User Interface (GUI). The
Web server can be accessed from the local LAN interface (e.g. by the home user) or from the
WAN interface (e.g. by the service provider support personnel). The Web GUI provides easy
and intuitive configuration of all MP252 parameters (i.e., VoIP, network interfaces, security,
QoS and advanced system settings). In addition, the Web GUI provides status monitoring
pages, diagnostic pages and enabled firmware upgrade.
Typically, service providers do not want to configure each MP252 manually and therefore,
they do not use the Web server in live deployments. However, the Web server is still useful
for:
Trying different configurations in the lab during the integration phases
Creating mass-configuration template files
Debugging special customer problems (by accessing the Web server from the WAN
interface)
Since the Web server allows all configuration and management operations, it is important to
protect it. The following security measures are available:
The Web server is user and password protected. Several users can be defined. A
special user with limited-access (only to the 'Quick Setup' screen) can be defined.
The access to the Web server can be blocked from the WAN and/or LAN interfaces.
Access to the Web server can be limited to specific IP addresses.
Secured HTTP (HTTPS) is supported. It is possible to enable HTTPS-only, if required.
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The HTTP and/or HTTPS port can be modified (from the default 80 and 8080).
13.4.2 TR-069 and TR-104 CPE WAN Management Protocol
TR-069 is a WAN management protocol intended for communication between Customer
Premise Equipment (CPE) or residential devices (such as MP252), and an
Auto-Configuration Server (ACS), residing on the service provider's side. It defines a
mechanism that encompasses secure auto configuration of CPE, and also incorporates
other CPE management functions into a common framework. In simpler terms, TR-069 is a
protocol that enables remote server management of theMP252. Such a protocol is useful, for
example, for remotely and securely controlling MP252 by the CPE provider. The standard is
published by the DSL Forum. TR-069 runs over SOAP/HTTP and enables device
configuration, management (including firmware upgrade), and status monitoring. TR-104 is
an extension of TR-069 for VoIP configuration and monitoring.
The TR standards are published by the DSL forum:
TR-069: http://www.broadband-forum.org/technical/download/TR-069.pdf
TR-104: http://www.broadband-forum.org/technical/download/TR-104.pdf
Figure 13-12: TR-069 CPE WAN Management Protocol
The TR-069 protocol allows an ACS to provision a CPE or collection of CPE based on a
variety of criteria. The provisioning mechanism includes specific provisioning parameters
and a general mechanism for adding vendor-specific provisioning capabilities as needed.
The provisioning mechanism allows CPE provisioning at the time of initial connection to the
broadband access network, and the ability to re-provision at any subsequent time. This
includes support for asynchronous ACS-initiated re-provisioning of CPE. TR-069 defines
several Remote Procedure Call (RPC) methods, as well as a large number of parameters,
which may be set or read. Some of these methods and parameters are defined as
mandatory.
Notes:
•
MP252 was tested for interoperability with two ACS vendors – Motive and
FriendlyTR69. Working with other ACS types may require specific
interoperability effort.
•
The parameter values in the subsequent tables are sample values only
taken from an ACS.
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13. Remote MP252 Management
13.4.2.1 Configuring MP252 via TR-069 and TR-104
TR-069 allows basic configuration of MP252. The configuration is defined in a hierarchical
tree-like structure according to the TR-069 standard.
13.4.2.1.1 Configuring the WAN Interface
Table 13-6: InternetGatewayDevice.WANDevice.i.WANConnectionDevice.i.WANIPConnection.i
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
AddressingType
mt_cwmp_param_wan_con The method used to assign an address to the
n_ip_addressing_type_get/ WAN side interface of the CPE for this
set
connection:
 “DHCP”
 “Static”
ConnectionStatus
mt_cwmp_param_wan_con Current status of the connection:
n_ip_status_get
 “Unconfigured”
 “Connecting”
 “Connected”
 “PendingDisconnect”
 “Disconneting”
 “Disconnected”
ConnectionType
mt_cwmp_param_wan_con Specifies the connection type of the
n_ppp_type_get
connection instance:
 “Unconfigured”
 “IP_Routed”
 “DHCP_Spoofed”
 “PPPoE_Bridged”
 “PPPoE_Relay”
 “PPTP_Relay”
 “L2TP_Relay”
DefaultGateway
mt_cwmp_param_wan_con The IP address of the default gateway for this
n_ip_default_gateway_get/ connection. This parameter is configurable
set
only if the AddressingType is Static.
DNSEnabled
mt_cwmp_param_wan_con Whether or not the device should attempt to
n_ip_dns_enabled_get/set query a DNS server across this connection.
DNSOverrideAllowed
mt_cwmp_param_wan_con Whether or not a manually set, non-empty
n_ip_dnsoverrideallowed_ DNS address can be overridden by a DNS
get/set
entry received from the WAN.
DNSServers
mt_cwmp_param_wan_con Comma-separated list of DNS server IP
n_xxx_dnsservers_get/set( addresses for this connection. Support for
i)
more than three DNS Servers is optional.
Enable
mt_cwmp_param_wan_con Enables or disables the connection instance.
n_xxx_enable_get/set(1)
On creation of a WANIPConnection instance,
it is initially disabled.
ExternalIPAddress
mt_cwmp_param_wan_con The external IP address used by NAT for this
n_xxx_externalip_get(i)
connection. This parameter is configurable
only if the AddressingType is Static.
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Parameter
Configuration File
Parameter
Description
MaxMTUSize
mt_cwmp_param_wan_con The maximum allowed size of an Ethernet
n_ip_max_mtu_size_get/se frame from LAN-side devices.
t( i)
Name
mt_cwmp_param_wan_con User-readable name of this connection.
n_xxx_name_get/set(i)
NATEnabled
mt_cwmp_param_wan_con Indicates if NAT is enabled for this connection.
n_xxx_nat_enabled_get/set
(i )
PortMappingNumberOf Entries
Total number of port mapping entries.
PossibleConnectionTy pes
A comma-separated list indicating the types of
connections possible for this connection
instance. Each element of the list is an
enumeration of:
 “Unconfigured”
 “IP_Routed”
 “IP_Bridged”
RouteProtocolRx
mt_cwmp_param_wan_con Defines the Rx protocol to be used:
n_xxx_route_protocol_rx_  “Off”
get/set
 “RIPv1” (Optional)
 “RIPv2” (Optional)
 “OSPF” (Optional)
RSIPAvailable
mt_cwmp_param_wan_con Indicates if Realm-specific IP (RSIP) is
n_xxx_rsip_available_get(i) available as a feature on MP252.
ShapingRate
SubnetMask
lan_host_config_managem Subnet mask of the WAN interface. This
ent_get/set
parameter is configurable only if the
AddressingType is Static.
rg_conf dhcps/ netmask
SpecVersion
“”
Currently, 1.0 is the only available version.
Uptime
The time in seconds that this connection has
been up.
Rate to shape this connection’s egress traffic
to.
If less than or equal to 100, in percentages of
the rate of the highest rate-constrained layer
over which the packet travels on egress. The
rate is limited over the window period
specified by ShapeWindow.
If greater than 100, in bits per second.
A value of -1 indicates no shaping.
13.4.2.1.2 Configuring the LAN Interface
Table 13-7: InternetGatewayDevice.LANDevice.i.LANEthernetInterfaceConfig
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Parameter
13. Remote MP252 Management
Configuration File
Parameter
Description
Enable
device_eic_enable_get/set
Enables or disables this interface.
MACAddress
device_mac_address_get
The physical address of the interface.
MaxBitRate
device_max_bit_rate_get
The maximum upstream and downstream
bit rate available for this connection:
 “10”
 “100”
 “1000”
 “Auto”
Status
device_status_get
The status of the interface:
 “Up”
 “NoLink”
 “Error”
 “Disabled”
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Table 13-8: InternetGatewayDevice.LANDevice.i.LANHostConfigManagement
TR-069/TR-104
Parameter
Configuration File
Parameter
AllowedMACAddres
ses
allowed_mac_addresses_g
et/set
Represents a comma-separated list of
hardware addresses that are allowed to
connect to this connection if
MACAddressControlEnabled is 1 for a
given interface.
DHCPLeaseTime
dhcp_lease_time_get/set
Specifies the lease time in seconds of client
assigned addresses. A value of -1
indicates an infinite lease.
DHCPRelay
dhcp_relay_get/set
Determines if the DHCP server performs
the role of a server (0) or a relay (1) on the
LAN interface.
DHCPServerEnable
lan_host_config_managem
ent_get/set
rg_conf dhcps/enable
Enables or disables the DHCP server on
the LAN interface.
DNSServers
dhcps_dns_servers_get/se
Comma-separated list of DNS servers
offered to DHCP clients. Support for more
than three DNS Servers is optional.
DomainName
domain_name_get/set
Sets the domain name for clients on the
LAN interface.
IPRouters
ip_routers_get/set
Comma-separated list of IP addresses of
routers on this subnet. Also known as
default gateway. Support for more than one
Router address is optional.
MaxAddress
lan_host_config_managem
ent_get/set
rg_conf dhcps/end_ip
Specifies the last address in the pool to be
assigned by the DHCP server on the LAN
interface.
MinAddress
lan_host_config_managem
ent_get/set
rg_conf dhcps/start_ip
Specifies the first address in the pool to be
assigned by the DHCP server on the LAN
interface.
SubnetMask
lan_host_config_managem
ent_get/set
rg_conf dhcps/ netmask
Specifies the client’s network subnet mask.
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13. Remote MP252 Management
13.4.2.1.3 Configuring VoIP via TR-104
Table 13-9: InternetGatewayDevice.Services.VoiceService.i.Capabilities
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
ButtonMap
Support for a configurable button map. A true
value indicates support for a configurable
button map via the
VoiceService.{i}.VoiceProfile.{i}.ButtonMap
object.
DSCPCoupled
A true value indicates that the CPE is
constrained such that transmitted call control
packets use the same DSCP marking as
transmitted RTP packets.
If the value is true, the CPE must not support
the DSCPMark parameter for call control.
EthernetTaggingCou pled
A true value indicates that the CPE is
constrained such that transmitted call control
packets use the same Ethernet tagging (VLAN
ID Ethernet Priority) as transmitted RTP
packets.
If the value is true, the CPE must not support
the VLANIDMark or EthernetPriorityMark
parameters within a call control object (e.g.,
SIP, MGCP, or H323).
FaxPassThrough
Support for fax pass-through. A true value
indicates support for the parameter
VoiceService.{i}.VoiceProfile.{i}.FaxPassThro
ugh. (True if
voip/audio/fax/fax_transport_mode equals
Bypass)
FaxT38
Support for T.38 fax. A true value indicates
support for the object
VoiceService.{i}.VoiceProfile.{i}.FaxT38.
MaxLineCount
voip/num_of_fxs_lines
Maximum number of lines supported across all
profiles.
MaxProfileCount
Maximum number of distinct voice profiles
supported.
MaxSessionCount
Maximum number of voice sessions supported
across all lines and profiles. (This might differ
from MaxLineCount if each line can support
more than one session for CPE provided
conference calling. This value can be less than
the product of MaxLineCount and
MaxSessionsPerLine.)
MaxSessionsPerLin
Maximum number of voice sessions supported
for any given line across all profiles. A value
greater than one indicates support for CPE
provided conference calling.
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Parameter
Configuration File
Parameter
Description
ModemPassThrough -
Support for modem pass-through. A true value
indicates support for the parameter
VoiceService.{i}.VoiceProfile.{i}.ModemPassT
hrough.
NumberingPlan
Support for a configurable numbering plan. A
true value indicates support for a configurable
numbering plan via the
VoiceService.{i}.VoiceProfile.{i}.NumberingPla
n object.
PSTNSoftSwitchOve
A true value indicates MP252 is capable of
supporting the PSO_Activate Facility Action,
which allows a call to be switched to a PSTN
FXO.
Note: Currently, this parameter is not
supported.
Regions
pkg\mgt\lib\mgt_regiona
l_settings.c
slic_dsp_general_and_r
egional_settings_param
s_array
Comma-separated list of geographic regions
supported by MP252. Each item in the list
must be an alpha-2 (two-character alphabetic)
country code as specified by ISO 3166.
An empty list indicates that MP252 does not
support region-based customization.
Note: This format is currently not supported.
RingGeneration
Support for ring generation. A true value
indicates support for control of ring generation
via the
VoiceService.{i}.VoiceProfile.{i}.Line.{i}.Ringer
object.
A true value also indicates that the
RingDescriptionsEditable,
PatternBasedRingGeneration and
FileBasedRingGeneration parameters in this
object are present.
RTCP
Support for RTCP.
RTPRedundancy
Support for RTP payload redundancy as
defined in RFC 2198. A true value indicates
support for
VoiceService.{i}.VoiceProfile.{i}.RTP.Redunda
ncy.
SignalingProtocols
voip/signalling/protocol
Signal protocol:
 “SIP”
 “MGCP”
Each entry can be appended with a version
indicator in the form “/X.Y”. For example:
“SIP/2.0”.
Note: Only one protocol is supported at a time.
SRTP
Support for SRTP.
Note: Currently, SRTP is not supported.
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Parameter
13. Remote MP252 Management
Configuration File
Parameter
Description
ToneGeneration
Support for tone generation. A true value
indicates support for the object
VoiceService.{i}.VoiceProfile.{i}.Tone.
A true value also indicates that the
ToneDescriptionsEditable,
PatternBasedToneGeneration and
FileBasedToneGeneration parameters in this
object are present.
VoicePortTests
Support for remotely accessible voice-port
tests. A true value indicates support for the
VoiceService.{i}.PhyInterface.{i}.Tests object.
Table 13-10: InternetGatewayDevice.Services.VoiceService.i.Capabilities.Codecs
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
Codec
voip/codec/i/name
Identifier of the type of codec.
EntryID
voip/codec/i/
Unique identifier for each entry in the table.
PacketizationPeriod voip/codec/i/ptime
Version 3.4.0
Comma-separated list of supported
packetization periods (in milliseconds), or
continuous ranges of packetization periods.
Ranges are indicated as a hyphen-separated
pair of unsigned integers.
For example:
 “20” indicates a single discrete value.
 “10, 20, 30” indicates a set of discrete
values.
 “5-40” indicates a continuous inclusive
range.
 “5-10, 20, 30” indicates a continuous
range in addition to a set of discrete
values.
A range must only be indicated if all values
within the range are supported.
Note: Currently, only a single ptime per
codec is supported.
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Table 13-11: InternetGatewayDevice.Services.VoiceService.i.VoiceProfile
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
DTMFMethod
voip/out_of_band_dtmf
Method by which DTMF digits must be
passed:
 “InBand”
 “RFC2833”
 “SIPInfo
Enable
Enables or disables all lines in this profile, or
places it into a quiescent state:
 “Disabled”
 “Quiescent”
 “Enabled”
On creation, a profile must be in the Disabled
state.
In the Quiescent state, in-progress sessions
remain intact, but no new sessions are
allowed. Support for the Quiescent state in a
MP252 is optional. If this parameter is set to
“Quiescent” in a MP252 that does not support
the Quiescent state, it must treat it the same
as the Disabled state.
Name
String to easily identify the profile instance.
Note: Currently, this is not supported.
NumberOfLines
voip/num_of_fxs_lines
Number of instances of Line within this
VoiceProfile.
Table 13-12: InternetGatewayDevice.Services.VoiceService.i.VoiceProfile.i.SIP
TR-069/TR-104
Parameter
OutboundProxy
Configuration File
Parameter
voip/
signalling/sip/sip_outbou
nd_proxy/addr
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Description
Host name or IP address of the outbound
proxy. If a non-empty value is specified, the
SIP endpoint must send all SIP traffic
(requests and responses) to the host
indicated by this parameter and the port
indicated by the OutboundProxyPort
parameter. This must be done regardless of
the routes discovered using normal SIP
operations, including use of Route headers
initialized from Service-Route and
Record-Route headers previously received.
The OutboundProxy value is not used to
generate the URI placed into the Route
header of any requests.
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Parameter
Configuration File
Parameter
OutboundProxyPort
voip/
signalling/sip/sip_outbou
nd_proxy/proxy
Destination port for connecting to the
outbound proxy. This parameter must be
ignored unless the value of the
OutboundProxy parameter in this object is
non-empty.
ProxyServer
voip/signalling/sip/proxy_
address
or
voip/signalling/sip/sip_re
gistrar/addr
Host name or IP address of the SIP proxy
server.
ProxyServerPort
voip/signalling/sip/proxy_
port
or
voip/signalling/sip/sip_re
gistrar/port
Destination port for connecting to the SIP
server.
ProxyServerTranspo
rt
voip/signalling/sip/transp
ort_protocol
Transport protocol for connecting to the SIP
server. Must be chosen from among the
transports supported.
RegisterExpires
voip/signalling/sip/proxy_
timeout
Register request Expires header value (in
seconds).
RegistrarServerTran
sport
voip/signalling/sip/transp
ort_protocol
Transport protocol for connecting to the SIP
server. Must be chosen from among the
transports supported.
UserAgentPort
voip/signalling/sip/port
Port for incoming call control signaling.
UserAgentTransport
voip/signalling/sip/transp
ort_protocol
Transport protocol for incoming call control
signaling.
Description
13.4.2.1.4 Upgrading Firmware via TR-069
TR-069 contains a built-in mechanism for MP252 firmware upgrade.
13.4.2.2 Monitoring MP252 Status via TR-069 and TR-104
The service provider can monitor the status of MP252 via TR-069 and TR-104.
13.4.2.2.1 Device Information
Table 13-13: InternetGatewayDevice.DeviceInfo
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
Description
manufacturer/description
A full description of MP252 (string).
DeviceLog
“”
Vendor-specific log(s).
HardwareVersion
Manufacturer/hardware/v
ersion
A string identifying the particular MP252
model and version.
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Parameter
Configuration File
Parameter
Description
Manufacturer
manufacturer/vendor_na
me
A string identifying the manufacturer of
MP252, i.e., AudioCodes.
ManufacturerOUI
manufacturer/vendor_oui
Organizationally unique identifier of the
device manufacturer. Represented as a six
hexadecimal-digit value using all upper-case
letters and including any leading zeros.
ModelName
manufacturer/model_num
ber
A string identifying the model name of
MP252.
ProductClass
manufacturer/product_cla Identifier of the class of product for which the
ss
serial number applies. That is, for a given
manufacturer, this parameter is used to
identify the product or class of product over
which the SerialNumber parameter is unique.
ProvisioningCode
cwmp/provisioning_code
Identifier of the primary service provider and
other provisioning information, which may be
used by the Server to determine service
provider-specific customization and
provisioning parameters.
If non-empty, this argument must be in the
form of a hierarchical descriptor with one or
more nodes specified. Each node in the
hierarchy is represented as a 4-character
sub-string, containing only numerals or
upper-case letters. If there is more than one
node indicated, each node is separated by a
"." (dot). For example, “TLCO” and
“TLCO.GRP2”.
SerialNumber
Manufacturer/hardware/s
erial_num
Serial number of MP252.
SoftwareVersion
system/external_version
A string identifying the software version
currently installed in MP252.
To allow version comparisons, this element
must be in the form of dot-delimited integers,
where each successive integer represents a
more minor category of variation. For
example, 3.0.21 where the components
mean Major.Minor.Build.
UpTime
Time in seconds since MP252 was last reset.
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13. Remote MP252 Management
13.4.2.2.2 WAN Status
Table 13-14: InternetGatewayDevice.WANDevice.i.WANConnectionDevice.i.
WANIPConnection.i.Stats
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
EthernetBytesRecei
ved
mt_cwmp_param_wan_co Total number of bytes received over all
nn_ip_stats_get
connections within the same
WANConnectionDevice that share a common
(STAT_RX_BYTES)
MAC address since MP252 was last reset.
EthernetBytesSent
mt_cwmp_param_wan_co Total number of bytes sent over all
nn_ppp_stats_get
connections within the same
( STAT_TX_BYTES)
WANConnectionDevice that share a common
MAC address since MP252 was last reset.
EthernetPacketsRec
eived
mt_cwmp_param_wan_co Total number of Ethernet packets received
nn_ppp_stats_get
over all connections within the same
WANConnectionDevice that share a common
( STAT_RX_PACKETS)
MAC address since MP252 was last reset.
EthernetPacketsSen
mt_cwmp_param_wan_co Total number of Ethernet packets sent over
nn_ppp_stats_get
all connections within the same
WANConnectionDevice that share a common
MAC address since MP252 was last reset.
13.4.2.2.3 LAN Status
Table 13-15: InternetGatewayDevice.LANDevice.i.LANEthernetInterfaceConfig.i.Stats
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
BytesReceived
mt_voip_get_state (line,
state)
Total number of bytes received over the
interface since MP252 was last reset.
BytesSent
mt_voip_get_state(line,
state)
Total number of bytes sent over the interface
since MP252 was last reset.
PacketsReceived
mt_voip_get_state(line,
state)
Total number of packets received over the
interface since MP252 was last reset.
PacketsSent
mt_voip_get_state(line,
state)
Total number of packets sent over the
interface since MP252 was last reset.
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13.4.2.2.4 VoIP Status via TR-104
Table 13-16: InternetGatewayDevice.Services.VoiceService.i.VoiceProfile.i.Line.i.Stats
TR-069/TR-104
Parameter
Configuration File
Parameter
Description
ResetStatistics
When set to one, it resets the statistics for
this voice line. Always False when read.
PacketsSent
mt_voip_get_state(line,
state)
Total number of RTP packets sent for this
line.
PacketsReceived
mt_voip_get_state(line,
state)
Total number of RTP packets received for
this line.
BytesSent
mt_voip_get_state(line,
state)
Total number of RTP payload bytes sent for
this line.
BytesReceived
mt_voip_get_state(line,
state)
Total number of RTP payload bytes received
for this line.
PacketsLost
mt_voip_get_state(line,
state)
Total number of RTP packets that have been
lost for this line.
Overruns
Total number of times the receive jitter buffer
has overrun for this line.
Underruns
Total number of times the receive jitter buffer
has underrun for this line.
IncomingCallsReceive d
Total incoming calls received.
IncomingCallsAnswere d
Total incoming calls answered by the local
user.
IncomingCallsConnect ed
Total incoming calls that successfully
completed call setup signaling.
IncomingCallsFailed
Total incoming calls that failed to successfully
complete call setup signaling.
OutgoingCallsAttempt ed
Total outgoing calls attempted.
OutgoingCallsAnswere d
Total outgoing calls answered by the called
party.
OutgoingCallsConnect ed
Total outgoing calls that successfully
completed call setup signaling.
OutgoingCallsFailed
Total outgoing calls that failed to successfully
complete call setup signaling.
CallsDropped
Total calls that were successfully connected
(incoming or outgoing), but dropped
unexpectedly while in progress without
explicit user termination.
TotalCallTime
Cumulative call duration (in seconds).
ServerDownTime
The number of seconds MP252 is unable to
maintain a connection to the server. Applies
only to SIP.
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Parameter
13. Remote MP252 Management
Configuration File
Parameter
Description
ReceivePacketLossRat mt_voip_get_state(line,
state)
Current receive packet loss rate (in
percentage).
FarEndPacketLossRat e
Current far-end receive packet lost rate (in
percentage).
ReceiveInterarrivalJitte r
Current receive interarrival jitter (in
microseconds).
FarEndInterarrivalJitte r
Current Interarrival jitter (in microseconds) as
reported from the far-end device via RTCP.
RoundTripDelay
Current round-trip delay (in microseconds).
mt_voip_get_state
AverageReceiveInterar rivalJitter
Average receive interarrival jitter (in
microseconds) since the beginning of the
current call.
AverageFarEndInterarr ivalJitter
Average far-end interarrival jitter (in
microseconds) since the beginning of the
current call.
AverageRoundTripDel ay
Average round-trip delay (in microseconds)
since the beginning of the current call. This is
the average of the RoundTripDelay statistics
accumulated each time the delay is
calculated.
13.4.2.3 Security Concerns and Measures
The CPE WAN Management Protocol is designed to allow a high degree of security in the
interactions that use it. The CPE WAN Management Protocol is designed to prevent
tampering with the transactions that take place between a CPE and ACS, provide
confidentiality for these transactions, and allow various levels of authentication.
The following security mechanisms are incorporated in this protocol:
The protocol supports the use of SSL/TLS for communications transport between CPE
and ACS. This provides transaction confidentiality, data integrity, and allows
certificate-based authentication between the CPE and ACS.
The HTTP layer provides an alternative means of CPE authentication based on shared
secrets.
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13.4.3 SNMP
Simple Network Management Protocol (SNMP) is used in network management systems to
configure and monitor network-attached devices. SNMP is an IETF standard defined by RFC
1157, 1441 and additional RFCs for specific Management Information Base (MIBs).
MP252 contains an embedded SNMP agent and supports SNMPv1, SNMPv2 and partially
supports SNMPv3. For monitoring of the network interfaces, the standard SNMP MIB-II
(RFC 1213) is supported. For more options, a proprietary MIB, AC-MP20X-MIB includes the
following sections:
acMP20xConfig: for changing MP252's configuration
acMP20xStatus: for monitoring MP252's status
The figure below shows the SNMP network architecture:
Figure 13-13: SNMP Network Architecture
13.4.3.1 Enabling SNMP in the Web Interface
Simple Network Management Protocol (SNMP) enables Network Management Systems
(NMSs) to remotely configure and monitor your MP252. Your ISP may use SNMP to identify
and resolve technical problems. Technical information regarding the properties of MP252's
SNMP agent should be provided by your ISP.
The procedure below describes how to configure the SNMP agent embedded on
the MP252.
 To configure MP252's SNMP agent:
1.
In the 'Advanced' screen, click the Simple Network Management Protocol (SNMP)
icon; the 'Simple Network Management Protocol (SNMP)' screen appears.
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Figure 13-14: Simple Network Management Protocol (SNMP) Screen
2.
Select the 'Enabled' check box to enable SNMP.
3.
Select the ‘Allow Incoming WAN Access to SNMP’ check box to allow access to
MP252's SNMP agent over the Internet.
4.
In the ‘Read-Only Community Names’ and ‘Read-Write Community Names’
fields, enter the SNMP community strings. These strings are passwords used in SNMP
messages between the management system and MP252. A read-only community
allows the manager to monitor MP252. A read-write community allows the manager to
monitor and configure MP252.
5.
From the ‘Trusted Pair’ drop-down list, enter the IP address, or subnet of addresses that
identify which remote management stations are allowed to perform SNMP operations
on MP252.
6.
Under the SNMP Traps group, select the ‘Enabled’ check box to allow MP252 to send
messages (traps) to a remote management station to notify the manager about the
occurrence of important events or serious conditions.
7.
•
Version: SNMP version - SNMP v1 or SNMP v2c traps.
•
Destination: remote management station's IP address.
•
Community: community name that is associated with the trap messages.
Click OK to save your settings.
13.4.3.2 Configuring MP252 via SNMP
The acMP20xConfig MIB section is structured in a similar hierarchy as MP252's Web GUI.
Each parameter in the MIB has a matching parameter in the Web GUI and a matching
parameter in the gateway’s configuration file. The MIB file defines the valid range and the
default value for each parameter. Typically, the customer integrates the MP20x MIB into the
customer's Network Management System (NMS) to automate the configuration process.
Note: A special MIB object is defined to allow MP252 firmware upgrade triggered by
SNMP. The object acMP20xRemoteUpdate triggers a remote upgrade from the
SNMP-configured URL.
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13.4.3.3 Status Monitoring of System and Network Interfaces via SNMP
SMNP can be used to monitor the status of MP252. Status monitoring of the system and
network
interfaces
can
be
done
via
the
standard
MIB-II
(iso(1).org(3).dod(6).internet(1).mgmt(2).mib-2(1)). The following table shows some of the
information elements available via MIB-II:
Table 13-17: Table 3-13: Information Elements Available via MIB-II
Section
Available Information
system
Description
Version Information
Up-time
interfaces
Information per network interface:
 Description
 Type
 Speed
 MAC address
 Traffic statistics
 Errors
ip
Assigned IP addresses and IP-related parameters
icmp, udp, tcp
Transport-protocol specific statistical information
ifMIB
Information about network interfaces per RFC 2233
13.4.3.4 Security Concerns and Measures
Since SNMP allows write-access to configuration parameters, it is important to protect this
interface. The following security measures are available:
A community string (password) can be defined for read-only access and for read/write
access.
It is possible to limit access to SNMP to a trusted peer (single IP address or a range of
addresses).
SNMPv3 provides an significant security improvement over SNMPv1/2. Version 2.8.0
will support SNMPv3 and will allow the service provider to configure SNMPv3 security
parameters.
SNMP traffic can be allowed over an IPSec secured connection – check availability with
AudioCodes.
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13.4.4 Syslog
Syslog is a standard protocol for reporting and logging of messages over IP network and is
defined by RFC 3164. MP252 enables the service provider to configure a Syslog server and
a severity level above which errors are sent to the server. Typically, only error-level
messages should be sent to the Syslog server (in order not to flood it with irrelevant
debug-level information). For debugging, it is possible to temporarily allow logging for
debug-level messages (e.g. for SIP messages).
Many free Syslog servers exist, including Kiwi Syslog Daemon' (http://www.kiwisyslog.co'm
http://www.kiwisyslog.com).
Note: Since Syslog is used only to output messages from MP252, it does not contain
any security concerns.
13.4.5 Automatic File Download
A practical, straight-forward and easy to implement method for mass configuration and
firmware update is automatic file download from a remote file server (via HTTP, FTP, or
TFTP). This method is used by many service providers.
13.4.5.1 Firmware File Download
MP252's firmware files contain information about the target product type and the firmware
version information.
13.4.5.2 Configuration File Download
MP252 supports two configuration file formats, a *.conf file and an *.ini file. Both files define
the same parameters, but in a different format; the *.conf file has a hierarchical tree-like
structure and the *.ini file is "flat" (defining the full path for each parameter).
As with the firmware file, the configuration file can be “pushed” to MP252 via the Web server
or “pulled” by MP252 from a remote server. This section refers only to the second option.
When MP252 downloads a file from a remote server, it performs the following actions:
Decrypts the file, if it is encrypted.
Checks that the file version is later than the current configuration file version (if it is not
later, the new configuration is not used).
Checks the software version with which the configuration file was created (if the file was
created with a later software version, it is not used).
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Merges the configuration file with the current configuration:
•
Parameters that appear in the new file are modified or added
•
Parameters that do not appear in the new file remain in their existing value
Notes:
•
It is recommended that the configuration file (that is downloaded from the
network), contains only the small subset of parameters that the service
provider needs to update remotely.
•
To create the configuration file, it is recommended to use a MP252 that is
restored to factory settings, modify the required parameters using the Web
GUI, and then upload the configuration file from MP252 with the option to
get only the modified configuration fields enabled.
13.4.5.3 Security Concerns and Measures
The main security hazard in automatic file download is that a hacker can force MP252 to
download a file from the hacker's server instead of the service provider’s legitimate server.
Another concern is exposing information such as the SIP proxy IP address and user and
password information in the configuration file (if the hacker is sniffing the network).
The following security measures are available to prevent this:
The configuration file can be encrypted using 3DES with pre-configured key. This
prevents the user from learning the format of the file and obtaining information from it.
HTTPS can be used to further encrypt the transport.
HTTPS certificates can be used to allow MP252 to authenticate the server and also to
prevent the user from acquiring the file from the server.
13.4.6 Telnet CLI
MP252 features a Command Line Interface (CLI) over Telnet. The CLI enables the service
provider to manage MP252 (e.g. reboot, force a firmware upgrade), to obtain information
about the status of the device (e.g. VoIP calls, network interfaces, version information), to
change the configuration and to perform different debugging tasks (e.g. enable debug
logging, enable packet recording).
Typically, the CLI interface is only used for debugging and diagnostics, since it does not
allow mass configuration and monitoring.
Since the CLI allows all configuration and management operations, it is important to protect it.
The following security measures are available:
The CLI is user and password protected (same as the Web).
Telnet access can be blocked from the WAN and/or LAN interfaces.
It is possible to limit Telnet access to specific IP addresses.
Future versions will support SSH.
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14. Security
Security
MP252's security suite includes comprehensive and robust security services: Stateful Packet
Inspection Firewall, user authentication protocols and password protection mechanisms.
These features together allow users to connect their computers to the Internet and
simultaneously be protected from the security threats of the Internet.
The firewall, which is the cornerstone of your MP252's security suite, has been exclusively
tailored to the needs of the residential/office user and has been pre-configured to provide
optimum security.
Figure 14-1: Firewall in Action
MP252 firewall provides both the security and flexibility that home and office users seek. It
provides a managed, professional level of network security while enabling the safe use of
interactive applications, such as Internet gaming and video-conferencing.
Additional features, including surfing restrictions and access control, can also be easily
configured locally by the user through a user-friendly Web-based interface, or remotely by a
service provider.
MP252 firewall supports advanced filtering, designed to allow comprehensive control over
the firewall's behavior. You can define specific input and output rules, control the order of
logically similar sets of rules and make a distinction between rules that apply to WAN and
LAN network devices.
The Web-based management screens in the Security section feature the following:
The 'General' screen allows you to choose the security level for the firewall (see'
General Security Level Settings' on page 226).
The 'Access Control' screen can be used to restrict access from the home network to
the Internet (see 'Local Servers (Port Forwarding)' on page 229).
The 'Port Forwarding' screen can be used to enable access from the Internet to
specified services provided by computers in the home network and special Internet
applications (see 'Port Forwarding' on page 229).
The 'DMZ Host' screen allows you to configure a LAN host to receive all traffic arriving at
your MP252, which does not belong to a known session (see' Port Triggering' on page
235).
The 'Port Triggering' screen allows you to define port triggering entries, to dynamically
open the firewall for some protocols or ports. (see 'Remote Administration' on page
261).
The 'Website Restrictions' allows you to block LAN access to a certain host or web site
on the Internet (see 'Website Restrictions' on page 237).
'Advanced Filtering' allows you to implicitly control the firewall setting and rules (see
'Advanced Filtering' on page 244).
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14.1
'Security Log' allows you to view and configure the firewall Log (see Security Log).
General Security Level Settings
Use the 'Security Settings' screen to configure the MP252's basic security settings.
Figure 14-2: General Security Level Settings
The firewall regulates the flow of data between the home network and the Internet. Both
incoming and outgoing data are inspected and then either accepted (allowed to pass through
MP252) or rejected (barred from passing through MP252) according to a flexible and
configurable set of rules. These rules are designed to prevent unwanted intrusions from the
outside, while allowing home users access to the Internet services that they require.
The firewall rules specify what types of services available on the Internet may be accessed
from the home network and what types of services available in the home network may be
accessed from the Internet. Each request for a service that the firewall receives, whether
originating in the Internet or from a computer in the home network, is checked against the set
of firewall rules to determine whether the request should be allowed to pass through the
firewall. If the request is permitted to pass, then all subsequent data associated with this
request (a "session") are also allowed to pass, regardless of its direction.
For example, when you point your Web browser to a Web page on the Internet, a request is
sent out to the Internet for this page. When the request reaches MP252, the firewall identifies
the request type and origin--HTTP and a specific PC in your home network, in this case.
Unless you have configured access control to block requests of this type from this computer,
the firewall allows this request to pass out onto the Internet (see 'WAN PPPoE' on page 181
for more on setting access controls). When the Web page is returned from the Web server
the firewall associates it with this session and allows it to pass, regardless of whether HTTP
access from the Internet to the home network is blocked or permitted.
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Note that it is the origin of the request, not subsequent responses to this request, that
determines whether a session can be established or not.
You can choose from among three pre-defined security levels for MP252: Minimum, Typical,
and Maximum (the default setting). The table below summarizes the behavior of MP252 for
each of the three security levels.
Table 14-1: Behavior for the Three Security Levels
Security Level
Maximum
Security
(Default)
Requests Originating
in the WAN
(Incoming Traffic)
Requests
Originating
in the LAN
(Outgoing Traffic)
Limited: Only commonly- used services,
Blocked: No access to home network
from Internet, except as configured in the such as Web- browsing and e-mail, are
Local Servers, DMZ host and Remote
permitted
Access screens
Typical Security Blocked: No access to home network
Unrestricted: All services are permitted,
from Internet, except as configured in the except as configured in the Access
Local Servers, DMZ host and Remote
Control screen
Access screens
Minimum
Security
Unrestricted: Permits full access from
Unrestricted: All services are permitted,
Internet to home network; all connection except as configured in the Access
attempts permitted.
Control screen
These services include Telnet, FTP, HTTP, HTTPS, DNS, IMAP, POP3 and SMTP.
The list of allowed services at 'Maximum Security' mode can be edited in the screen' 'Access
Contro'l on page 228'.
Some applications (such as some Internet messengers and Peer-To-Peer client applications)
tend to use these ports if they cannot connect with their own default ports. When applying
this behaviour, these applications are not blocked outbound, even at Maximum Security
Level.
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 To configure MP252's security settings:
(See the figure 'General Security Level Settings')
1.
Choose from among the three predefined security levels described in the table above.
'Maximum Security' is the default setting.
Using the Minimum Security setting may expose the home network to significant
security risks, and thus should only be used, when necessary, for short periods
of time.
14.2
2.
Check the 'Block IP Fragments' check box to protect your home network from a
common type of hacker attack that could make use of fragmented data packets to
sabotage your home network. Note that some UDP-based services make legitimate use
of IP fragments. You need to allow IP fragments to pass into the home network to make
use of these select services.
3.
In the 'TCP Session timeout' field, enter the time-to-live (TTL) in units of seconds for
TCP sessions. The valid range is 1 to 3600 hours (default is an hour).
4.
Click OK to save the changes.
Access Control
You may want to block specific computers within the home network (or even the whole
network) from accessing certain services on the Internet. For example, you may want to
prohibit one computer from surfing the Web, another computer from transferring files using
FTP, and the whole network from receiving incoming e-mail.
Access Control defines restrictions on the types of requests that may pass from the home
network out to the Internet, and thus may block traffic flowing in both directions. In the e-mail
example given above, you may prevent computers in the home network from receiving
e-mail by blocking their outgoing requests to POP3 servers on the Internet.
There are services you should consider blocking, such as popular game and file sharing
servers. For example, to ensure that your employees do not put your business at risk from
illegally traded copyright files, you may want to block several popular P2P and file sharing
applications.
 To view and allow/restrict these services:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the
Access Control tab; the screen 'Access Control' opens.
Figure 14-3: Access Control
2.
Click the New
below).
icon; the screen 'Add Access Control Rule' opens (see the figure
Figure 14-4: Add Access Control Rule
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3.
The parameter 'Address' enables you to specify the computer or group of computers for
which you would like to apply the access control rule. You can select between any or a
specific computer address in your LAN. If you choose the 'Specify Address' option, the
screen refreshes, and an 'Add' link appears. Click it to specify a computer address.
Specify an address by creating a 'Network Object'.
4.
The parameter 'Protocol' lets you select or specify the type of protocol to be used. In
addition to the list of popular protocols it provides, you may also choose any or a specific
protocol. If you choose option 'Specify Protocol', the screen refreshes and an 'Add' link
appears. Click it to specify a protocol address.
5.
The parameter 'Schedule' allows you to define the time period during which this rule
takes effect. You can select between 'Always' or a specific schedule. If you choose the
option 'Specify Schedule', the screen refreshes and an 'Add' link appears. Click it to
specify a schedule.
6.
Click OK to save your settings; the 'Access Control' screen displays a summary of the
rule that you just added. Click the Edit
icon to edit the access control rule for the
service; the screen 'Edit Service' opens.
7.
Select the network group to which you would like to apply the rule and the schedule
during which the rule takes effect.
8.
Click OK to save your changes and return to the 'Access Control' screen.
You can disable an access control rule and make the service available without having to
remove the service from 'Access Control'. This can be useful when making the service only
temporarily available and when expecting to reinstate the restriction in the future.
To temporarily disable rule, clear the check box adjacent to the service name.
To reinstate the restriction at a later time, recheck it.
To remove a rule, click the Remove
'Access Control'.
icon for the service; the service is removed from
Note: When Web Filtering is enabled, HTTP services cannot be blocked by Access
Control.
14.3
Port Forwarding
By default, MP252 blocks all external users from connecting to or communicating with your
network. Therefore, the system is safe from hackers who may try to intrude on the network
and damage it. However, you may want to expose your network to the Internet in certain
limited and controlled ways to enable some applications to work from the LAN (game, voice
and chat applications, for example) and to enable Internet access to servers in the home
network. The Port Forwarding feature supports both of these functionalities.
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The 'Port Forwarding' screen lets you define the applications that require special handling by
MP252. You must select the application's protocol and the local IP address of the computer
using or providing the service. If required, you can add new protocols in addition to the most
common ones provided by MP252.
For example, to use an FTP application on one of your PCs, select 'FTP' from the list and
enter the local IP address or host name of the designated computer; all FTP-related data
arriving at MP252 from the Internet is then forwarded to the specified computer.
Similarly, to grant Internet users access to servers inside your home network, you must
identify each service that you want to provide and the PC that provides it. For example, to
host a Web server inside the home network you must select 'HTTP' from the list of protocols
and enter the local IP address or host name of the computer that hosts the Web server.
When an Internet user points her browser to the external IP address of MP252, it forwards
the incoming HTTP request to the computer that is hosting the Web server.
Additionally, port forwarding enables you to redirect traffic to a different port instead of the
one to which it was designated. If for example you have a Web server running on your PC on
port 8080 and you want to grant access to this server to anyone who accesses MP252 via
HTTP, do the following:
Define a port forwarding rule for the HTTP service, with the PC's IP or host name.
Specify 8080 in the field 'Forward to Port'.
All incoming HTTP traffic is now forwarded to the PC running the Web server on port 8080.
When setting a port forwarding service, you must ensure that the port is not already in use by
another application, which may stop functioning. A common example is when using SIP
signaling in Voice over IP - the port used by MP252's VoIP application (5060) is the same
port on which port forwarding is set for LAN SIP agents.
Note: Some applications, such as FTP, TFTP, PPTP and H323, require the support of
special specific Application Level Gateway (ALG) modules in order to work
inside the home network. Data packets associated with these applications
contain information that allows them to be routed correctly. An ALG is needed to
handle these packets and ensure that they reach their intended destinations.
MP252 is equipped with a robust list of ALG modules in order to enable
maximum
functionality
in
the
home
network.
The ALG is automatically assigned based on the destination port.
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 To add a new port forwarding service :
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the Port
Forwarding tab; the screen 'Port Forwarding' opens.
Figure 14-5: Port Forwarding Screen
2.
Click the New
icon; the screen 'Add Port Forwarding Rule' opens.
Figure 14-6: Add Port Forwarding Rule
3.
From the ‘Local Host’ drop-down list, select the network object (defined in Section 4.5.2
on page 50) or define one now by selecting the ‘User Defined’ option. This is the IP
address or host name of the computer that provides the service (the 'server'). Note:
Only one LAN computer can be assigned to provide a specific service or application.
4.
From the ‘Protocol’ drop-down list, select the type of protocol (defined in Section 4.5.3
on page 51) or select ‘User Defined’ to define one now. You can select multiple
protocols for this rule.
Figure 14-7: Selecting Protocol Type
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5.
Click the Advanced button to configure advanced settings:
a.
Select the 'Specify Public IP Address' check box if you want to apply this rule on
MP252’s non-default IP address defined in the ‘NAT’ screen (see Section 14.7 on
page 240). Enter the additional external IP address in the 'Public IP Address' field.
Figure 14-8: Specifying Public IP Address
b.
c.
6.
By default, MP252 forwards traffic to the same port as the incoming port. If you
wish to redirect traffic to a different port, then from the 'Forward to Port' drop-down
list, select the 'Specify', and then enter the port number in the field provided.
By default, the rule is always active. However, you can select a schedule rule that
defines the time during which the rule may be active. From the 'Schedule'
drop-down list, select a defined Schedule rule (defined in Section 4.5.1 on page 47)
or define a new one quickly by selecting 'User Defined'.
Click OK to save changes.
You can disable a port forwarding rule to make a service unavailable without having to
remove the rule from the screen 'Port Forwarding'. This can be useful when making the
service temporarily unavailable and when expecting to reinstate it in the future.
Figure 14-9: Select Check Box of Port Forwarding Rule (Active)
To temporarily disable a rule, clear the check box next to the service name.
To reinstate it at a later time, select the check box.
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To remove a rule, click the Remove
removed.
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14.4
DMZ Host
The DMZ (Demilitarized) Host feature allows one local computer to be exposed to the
Internet. Designate a DMZ host to:
Use a special-purpose Internet service, such as an on-line game or video-conferencing
program, that is not present in the Local Servers list and for which no port range
information is available.
To expose one computer to all services, without restriction, irrespective of security.
Warning: A DMZ host is not protected by the firewall and may be vulnerable to attack.
Designating a DMZ host may also put other computers in the home network at risk. When
designating a DMZ host, you must consider the security implications and protect it if
necessary.
An incoming request for access to a service in the home network, such as a Web-server, is
fielded by MP252. MP252 forwards this request to the DMZ host (if one is designated) unless
the service is being provided by another PC in the home network (assigned in Local Servers),
in which case that PC receives the request instead.
 To designate a local computer as a DMZ Host:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the DMZ
Host tab; the screen 'DMZ Host' opens.
Figure 14-10: DMZ Host
2.
Enter the local IP address of the computer to be designated as a DMZ host. Note that
only one LAN computer can be a DMZ host at any time.
3.
Click OK to save your changes and return to the screen 'DMZ Host'.
You can disable the DMZ host so that it does not fully exposed to the Internet, but keep its IP
address recorded on the 'DMZ Host' screen. This may be useful if you wish to disable the
DMZ host but expect that you may want to enable it again in the future.
To disable the DMZ host so that it is not fully exposed to the Internet, clear the
check-box next to the DMZ IP designation and click OK.
To re-enable the DMZ host later, recheck the check-box.
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14. Security
Port Triggering
Port triggering can be used for dynamic port forwarding configuration. By setting port
triggering rules, you can allow inbound traffic to arrive at a specific LAN host, using ports
different than those used for the outbound traffic. This is called port triggering since the
outbound traffic triggers to which ports inbound traffic is directed.
For example, consider a gaming server that is accessed using UDP protocol on port 222.
The gaming server responds by connecting the user using UDP on port 333 when starting
gaming sessions. In such a case you must use port triggering, since this scenario conflicts
with the following default firewall settings:
The firewall blocks inbound traffic, by default.
The server replies to MP252's IP, and the connection is not sent back to your host, since
it is not part of a session.
To solve this, you need to define a Port Triggering entry, which allows inbound traffic on UDP
port 333, only after a LAN host generated traffic to UDP port 222. This results in accepting
the inbound traffic from the gaming server and sending it back to the LAN Host which
originated the outgoing traffic to UDP port 222.
 To view port triggering settings:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the Port
Triggering tab; the screen 'Port Triggering' opens. The screen lists all port triggering
entries.
Figure 14-11: Port Triggering
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 To add an entry for the gaming example above:
1.
From the drop-down list, select 'User Defined' to add an entry; the screen 'Edit Service'
opens.
Figure 14-12: Adding Port Triggering Rules
2.
Enter a name for the service (e.g., 'game_server'), and then click the link New Trigger
Ports; the screen 'Edit Service Server Ports' opens.
Figure 14-13: Edit Service Server Ports
3.
In the 'Protocol' drop-down list, select 'UDP'; the screen refreshes, providing source and
destination port options.
4.
Leave the 'Source Ports' drop-down list at its default 'Any'. In the 'Destination Ports'
drop-down list, select 'Single'; the screen refreshes again, providing an additional field
in which you should enter '222' as the destination port.
Figure 14-14: Edit Service Server Ports
5.
Click OK to save the settings.
6.
In the screen 'Edit Service', click the link New Opened Ports; the screen 'Edit Service
Opened Ports' opens.
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Similar to the trigger ports screen, select UDP as the protocol, leave the source port at
'Any', and enter a 333 as the single destination port.
Figure 14-15: Edit Service Opened Ports
8.
Click OK to save the settings; the screen 'Edit Service' presents your entered
information. Click OK again to save the port triggering rule; the screen 'Port Triggering'
now includes the new port triggering entry.
Figure 14-16: New Port Triggering Rule
You can disable a port triggering rule without having to remove it from the screen 'Port
Triggering':
To temporarily disable a rule, clear the check box corresponding to the service name.
To reinstate it later, simply reselect the check box.
To remove a rule, click the Remove
removed.
icon for the service; the service is permanently
There may be a few default port triggering rules listed when you first access the port
triggering screen. Note that disabling these rules may result in impaired MP252 functionality.
14.6
Website Restrictions
You can configure MP252 to block specific Internet websites so that they cannot be
accessed from computers in the home network. Moreover, restrictions can be applied to a
comprehensive and automatically-updated table of sites to which access is not
recommended.
 To block access to a website:
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1.
From the menu bar, click the Security menu, and in the screen 'Security', click the
Website Restrictions tab; the screen 'Website Restrictions' opens.
Figure 14-17: Website Restrictions
2.
Click the New
icon; the 'Restricted Website' screen appears.
Figure 14-18: Restricted Website
3.
Enter the website address (IP address or URL) that you would like to make inaccessible
from your home network (all Web pages within the site are also blocked). If the website
address has multiple IP addresses, MP252 resolves all additional addresses and
automatically adds them to the restrictions table.
4.
The 'Local Host' drop-down list provides you the ability to specify the computer or group
of computers for which you would like to apply the website restriction. You can select
between any or a specific computer address in your LAN. If you choose the option 'User
Defined', the screen refreshes and the 'Edit Network Object' appears:
Figure 14-19: Add a Specific Host
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14. Security
5.
Click the New
icon to specify a computer address. Specify an address creating a
'Network Object'.
6.
The parameter Schedule allows you to define the time period during which this rule
takes effect. You can select between 'Always' or a specific schedule. If you choose the
option 'User Defined', the screen 'Edit Scheduler Rule' appears:
Figure 14-20: Add a Specific Schedule
7.
Click the New
8.
Click OK to save the settings; MP252 attempts to find the site. 'Resolving...' appears in
the Status column while the site is being located (the URL is 'resolved' into one or more
IP addresses).
icon to specify the time segment, and then click OK.
9.
Click the Refresh button to update the status if necessary. If the site is successfully
located, 'Resolved' appears in the status bar; if not, 'Hostname Resolution Failed'
appears.
 If MP252 fails to locate the website:
1.
Use a Web browser to verify that the website is available. If it is, then you probably
entered the website address incorrectly.
2.
If the website is unavailable, return to the screen 'Website Restrictions' later and click
the button Resolve Now to verify that the website can be found and blocked by MP252.
3.
You can edit the website restriction by modifying its entry under the column 'Local Host'
in the screen 'Website Restrictions'.
 To modify an entry:
1.
Click the icon Edit for the restriction; the screen 'Restricted Website' opens. Modify the
website address, group or schedule as required.
2.
Click OK to save your changes and return to the screen 'Website Restrictions'.
 To ensure that all current IP addresses corresponding to the restricted
websites are blocked:
1.
Click the button Resolve Now; MP252 checks each of the restricted website addresses
and ensures that all IP addresses at which this website can be found are included in the
IP addresses column.
You can disable a restriction to make a website available again without having to remove it
from the screen 'Website Restrictions'. This can be useful when making the website
temporarily available and when expecting to block it again in the future.
To temporarily disable a rule, clear the check box adjacent to the service name.
To reinstate it at a later time, recheck the check box.
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14.7
To remove a rule, click the Remove
removed.
icon for the service; the service is permanently
NAT
MP252 features a configurable Network Address Translation (NAT) and Network Address
Port Translation (NAPT) mechanism, allowing you to control the network addresses and
ports of packets routed through your gateway. When enabling multiple computers on your
network to access the Internet using a fixed number of public IP addresses, you can statically
define which LAN IP address will be translated to which NAT IP address and/or ports.
By default, MP252 operates in NAPT routing mode. However, you can control your network
translation by defining static NAT/NAPT rules. Such rules map LAN computers to NAT IP
addresses. The NAT/NAPT mechanism is useful for managing Internet usage in your LAN,
or complying with various application demands. For example, you can assign your primary
LAN computer with a single NAT IP address, in order to assure its permanent connection to
the Internet. Another example is when an application server with which you wish to connect,
such as a security server, requires that packets have a specific IP address – you can define
a NAT rule for that address.
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14. Security
 To define NAT:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the NAT
tab; the screen 'NAT' opens.
Figure 14-21: NAT Screen
2.
Before configuring NAT/NAPT rules, you must first enter the additional public IP
addresses obtained from your ISP as your NAT IP addresses, in the 'NAT IP Addresses
Pool' section. The primary IP address used by the WAN device for dynamic NAPT
should not be added to this table.
a.
To add a NAT IP address, click the New
icon; the 'Edit Item' screen appears.
Figure 14-22: Adding a NAT IP Address
b.
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From the 'Network Object Type' drop-down list, select between IP address, subnet
or range, and then enter the information respectively, and click OK to save the
settings.
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3.
To add a new NAT/NAPT rule:
a.
In the 'NAT/NAPT Rule Sets' section, click the New Entry link; the 'Add NAT/NAPT
Rule' screen appears.
Figure 14-23: Adding NAT/NAPT Rule
This screen is divided into two main sections: 'Matching' and 'Operation'. The 'Matching'
section defines the LAN addresses to be translated to the external addresses, which are
defined in the 'Operation' section.
4.
'Matching' section (define characteristics of the packets matching the rule):
a.
b.
c.
Source Address: source address of packets sent or received by MP252. You can
select the computer or group of computers on which you would like to apply the rule.
To apply the rule on all the LAN hosts, select 'Any' . If you would like to add a new
address, select the 'User Defined'. This commences a sequence to add a new
Network Object, representing the new host.
Destination Address: destination address of packets sent or received by MP252.
This address can be configured in the same manner as the source address. This
entry enables further filtration of the packets.
Protocol: specifies a traffic protocol. Selecting the 'Show All Services' option
expands the list of available protocols. Select a protocol or add a new one using the
'User Defined' option. This commences a sequence that adds a new Service,
representing the protocol. Using a protocol requires observing the relationship
between a client and a server to distinguish between the source and destination
ports.
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Operation section (define the operation to apply on the IP addresses, matching the
criteria defined above): NAT or NAPT.
•
NAT Addresses: NAT address into which the original IP address is translated. The
drop-down list displays all of your available NAT addresses/ranges from which you
can select an entry. If you would like to add a single address or a sub-range from
the given pool/range, select the 'User Defined' option. This commences a
sequence that adds a new Network Object, representing the new host.
•
NAPT Address: NAPT address into which the original IP address is translated.
The drop-down list displays all of your available NAPT addresses/ranges from
which you can select an entry. If you would like to add a single address or a
sub-range from the given pool/range, select the 'User Defined' option. This
commences a sequence that adds a new Network Object, representing the new
host. . Note, that in this case the network object may only be an IP address, as
NAPT is port-specific.
♦
NAPT Ports: specify the port(s) of the IP address into which the original IP
address is translated. Enter a single port or select 'Range' (the screen
refreshes, enabling you to enter a range of ports).
6.
Select the 'Log Packets Matched by This Rule' check box to log the first packet from a
connection that was matched by this rule.
7.
By default, the 'Schedule' rule is always active. However, you can configure scheduler
rules to define time segments during which the rule may be active.
8.
Click OK to save the settings.
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14.8
Connections
The connection list displays all the connections that are currently open, as well as various
details and statistics. You can use this list to close an undesired connection by clicking its
corresponding action icon. The basic display includes the name of the protocol, the different
ports it uses, and the direction in which the connection was initiated.
 To view currently open connections:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the
Connections tab; the screen 'Connections' opens.
2.
From the Connections Per Page drop-down list, select the number of connections that
icon or the page
you want displayed per page. To browse to the next page, click the
number located at the bottom left of the page.
Figure 14-24: Connections Screen
To display additional details in the Connection list, click the Advanced button.
The 'Approximate Max. Connections' value displays the amount of additional concurrent
connections possible.
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14.9
14. Security
Advanced Filtering
Advanced filtering is designed to allow comprehensive control over the firewall's behavior.
You can define specific input and output rules, control the order of logically similar sets of
rules and make a distinction between rules that apply to WAN and LAN devices.
 To view MP252's advanced filtering options:
From the menu bar, click the Security menu, and in the screen 'Security', click the
Advanced Filtering tab; the 'Advanced Filtering' opens.
Figure 14-25: Advanced Filtering
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This screen is divided into two identical sections, one for 'Input Rule Sets' and the other for
'Output Rule Sets', which are for configuring inbound and outbound traffic, respectively. Each
section is comprised of subsets, which can be grouped into three main subjects:
1.
Initial rules - rules defined here are applied first, on all MP252 devices.
2.
Network devices rules - rules can be defined per MP252.
3.
Final rules - rules defined here are applied last, on all MP252 devices.
Numerous rules are automatically inserted by the firewall to provide improved security and
block harmful attacks.
Note: The order of appearance of the firewall rules determines the sequence by which
they are applied.
 To configure an advanced filtering rule:
1.
After choosing the traffic direction and the device on which to set the rule, click the
corresponding link New Entry; the screen 'Add Advanced Filter' opens.
Figure 14-26: Add Advanced Filter
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In the section 'Matching', define a match between IP addresses and a traffic protocol:
a.
Configure the source address of the packets sent to or received from the network
object. To add an address, select the option 'User Defined' from the drop-down list;
the screen 'Edit Network Object' appears.
Figure 14-27: Add a Specific Host
b.
c.
Click the New
icon; this commences a sequence that adds a new network
object.
Configure the destination address of the packets sent to or received from the
network object. This address can be configured in the same manner as the source
address.
From the 'Protocol' drop-down list, select a specific traffic protocol or add a new
one (by selecting 'User Defined'); the 'Edit Services' screen appears. Click the link
New Server Ports; this commences a sequence that adds a new protocol.
3.
Select the check box 'DSCP' to mark a DSCP value on packets matching this rule; the
screen refreshes, allowing you to enter the hexadecimal value of the DSCP.
4.
Select the check box 'Priority' to add a priority to the rule; the screen refreshes, allowing
you to select between one of eight priority levels, zero being the lowest and seven the
highest (each priority level is mapped to low/medium/high priority). This sets the priority
of a packet on the connection matching the rule, while routing the packet.
Figure 14-28: Set Priority Rule
5.
Select the check box 'Length' to specify the length of packets or the length of their data
portion.
6.
In the section 'Operation', define the action of the rule:
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•
Drop: Deny access to packets that match the source and destination IP addresses
and service ports defined in 'Matching'.
•
Reject: Deny access to packets that match the source and destination IP
addresses and service ports defined in 'Matching' and sends and sends an ICMP
error or a TCP reset to the origination peer.
•
Accept Connection: Allow access to packets that match the source and
destination IP addresses and service ports defined in 'Matching'. The data transfer
session is handled using Stateful Packet Inspection (SPI).
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•
Accept Packet: Allow access to packets that match the source and destination IP
addresses and service ports defined in 'Matching'. The data transfer session is not
handled using Stateful Packet Inspection (SPI), meaning that other packets that
match this rule are not automatically allowed access. For example, this can useful
when creating rules that allow broadcasting.
7.
Under the section 'Logging', select the parameter 'Log Packets Matched By This Rule'
to log the first packet from a connection that was matched by this rule.
8.
By default, the 'Schedule' rule is always active. However, you can configure scheduler
rules to define time segments during which the rule may be active.
9.
Click OK to save the settings.
14.10 Security Log
The Security log displays a list of firewall-related events, including attempts to establish
inbound and outbound connections, attempts to authenticate at an administrative interface
(Web-based management or Telnet terminal), firewall configuration and system start-up.
 To view the Security Log:
1.
From the menu bar, click the Security menu, and in the screen 'Security', click the Log
tab; the screen 'Log' opens.
Figure 14-29: Security Log
2.
The log table displays the following:
•
Time: to determine the time the event occurred.
•
Event: type of event. There are five types of events:
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♦
♦
♦
♦
14. Security
Inbound Traffic: The event is a result of an incoming packet.
Outbound Traffic: The event is a result of outgoing packet.
Firewall Setup: Configuration message.
WBM Login: Indicates that a user has logged in to WBM.
CLI Login: Indicates that a user has logged in to CLI (via Telnet).
•
Event-Type: textual description of the event:
♦
Blocked: The packet was blocked. The message is color-coded red.
♦
Accepted: The packet was accepted. The message is color-coded green.
•
Details: details of the packet or the event, such as protocol, IP addresses, ports,
etc.
 To change the security log settings:
1.
In the 'Log' screen, click Settings; the screen 'Log Settings' opens.
Figure 14-30: Security Log Settings
2.
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Select the types of activities for which you would like to have a log message generated.
•
Accepted Events:
♦
Accepted Incoming Connections: Write a log message for each successful
attempt to establish an inbound connection to the home network.
♦
Accepted Outgoing Connections: Write a log message for each successful
attempt to establish an outgoing connection to the public network.
•
Blocked Events:
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♦
♦
3.
All Blocked Connection Attempts: Write a log message for each blocked
attempt to establish an inbound connection to the home network or vice versa.
You can enable logging of blocked packets of specific types by disabling this
option, and enabling some of the more specific options below it.
Specific Events: Specify the blocked events that should be monitored. Use
this to monitor specific event such as SynFlood. A log message is generated if
either the corresponding check-box is checked, or the check-box 'All Blocked
Connection Attempts' is checked.
•
Other Events:
♦
Remote Administration Attempts: Write a log message for each
remote-administration connection attempt, whether successful or not.
♦
Connection States: Provide extra information about every change in a
connection opened by the firewall. Use this option to track connection
handling by the firewall and Application Level Gateways (ALGs).
•
Log Buffer:
♦
Prevent Log Overrun: Select this check box in order to stop logging firewall
activities when the memory allocated for the log fills up.
Click OK to save the settings.
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15
15. Advanced Networking Features
Advanced Networking Features
This chapter describes various advanced networking features such as DHCP.
15.1
IP Address Distribution
The MP252's Dynamic Host Configuration Protocol (DHCP) server makes it possible to
easily add computers that are configured as DHCP clients to the home network. It provides a
mechanism for allocating IP addresses and delivering network configuration parameters to
such hosts. MP252's default DHCP server is the LAN bridge.
A client (host) sends out a broadcast message on the LAN requesting an IP address for itself.
The DHCP server then checks its list of available addresses and leases a local IP address to
the host for a specific period of time and simultaneously designates this IP address as `taken'.
At this point, the host is configured with an IP address for the duration of the lease.
The host can choose to renew an expiring lease or let it expire. If it chooses to renew a lease
then it also receives current information about network services, as it did with the original
lease, allowing it to update its network configurations to reject any changes that may have
occurred since it first connected to the network. If the host wishes to terminate a lease before
its expiration it can send a release message to the DHCP server, which then makes the IP
address available for use by others.
The MP252 embedded DHCP server provides the following features:
Displays a list of all DHCP host devices connected to MP252
Defines the range of IP addresses that can be allocated to the LAN
Defines the length of time for which dynamic IP addresses are allocated
Provides the above configurations for each LAN device and can be configured and
enabled / disabled separately for each LAN device
Can assign a static lease to a LAN PC so that it receives the same IP address each time
it connects to the network even if this IP address is within the range of addresses that
the DHCP server may assign to other computers
Provides the DNS server with the host name and IP address of each PC that is
connected to the LAN
In addition, MP252 can act as a DHCP relay, escalating DHCP responsibilities to a WAN
DHCP server. In this case, MP252 acts merely as a router, while its LAN hosts receives their
IP addresses from an external DHCP server on the WAN.
With MP252's optional Zero Configuration Technology feature, the IP Auto Detection method
detects statically-defined IP addresses in addition to MP252's DHCP clients. It learns all the
IP addresses on the LAN and integrates the collected information with the database of the
DHCP server. This allows the DHCP server to issue valid leases, thus avoiding conflicting IP
addresses used by other computers in the network.
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 To view services currently provided by the DHCP server:
In the 'Advanced' screen, click the IP Address Distribution
Distribution' screen appears.
icon; the 'IP Address
Figure 15-1: DHCP Server Summary
Note: If the 'Service' column displays “Disabled”, then DHCP services are not being
provided to hosts connected to the network through that MP252 interface. This
means that MP252 does not assign IP addresses to these computers, which is
useful if you wish to work with static IP addresses only.
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15.1.1 DHCP Server Parameters
The procedure below describes how to edit a service provided by the DHCP server.
 To edit the DHCP server settings for a device:
1.
In the 'IP Address Distribution' screen, click the Edit
icon corresponding to the entry
that you want to edit; the DHCP Server settings for this device are displayed.
Figure 15-2: DHCP Settings Screen
2.
From the 'IP Address Distribution' drop-down list, select whether to disable the MP252
DHCP server, or enable DHCP (MP252 serves as a DHCP server or DHCP relay).
3.
In the ‘Start IP Address’ and ‘End IP Address’ fields, define the IP address range. This
determines the number of hosts that may be connected to the network in this subnet.
The 'Start IP Address' field specifies the first IP address that may be assigned in this
subnet; the 'End IP Address' field specifies the last IP address in the range.
4.
In the ‘Subnet Mask’ field, define the subnet to which an IP address belongs (e.g.,
255.255.0.0).
5.
In the ‘Lease Time in Minutes’ field, define the time for which each device is assigned an
IP address by the DHCP server when it connects to the network. When the lease
expires, the server determines if the computer has disconnected from the network. If it
has, then the server may reassign this IP address to a newly-connected computer. This
feature ensures that IP addresses that are not in use become available for other
computers on the network.
6.
Select the ‘Provide Host Name If Not Specified by Client’ check box to enable the
MP252 to assign clients a default name if they do not have a host name.
7.
Click OK.
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15.1.2 DHCP Relay Parameters
The MP252 can act as a DHCP relay if you want to dynamically assign IP addresses from a
DHCP server other than the MP252's DHCP server. .
Note: When implementing DHCP relay, you must configure the WAN of the MP252 to
operate in routing mode.
 To configure a device as a DHCP relay:
1.
In the 'IP Address Distribution' screen, click the Edit
icon corresponding to the entry
that you want to edit; the DHCP Server settings for this device are displayed.
2.
From the 'IP Address Distribution' drop-down list, select the 'DHCP Relay' option; the
'DHCP Settings' screen appears.
Figure 15-3: DHCP Settings
3.
Click the New
icon; the 'DHCP Relay Server Address' screen appears.
Figure 15-4: DHCP Relay Server Address Screen
4.
In the 'IP Address' field, enter the IP address of the DHCP server.
5.
Click OK to save your changes.
6.
Click OK once more in the 'DHCP Settings' screen.
7.
Change MP252's WAN to operate in routing mode:
a.
On the menu bar, click the Network Connections menu; the 'Network
Connections' screen appears.
b.
Click the Edit
icon corresponding to the WAN Ethernet connection; the 'WAN
Ethernet Properties' screen appears.
Click the Routing tab.
From the 'Routing Mode' drop-down list, select 'Route'.
Click OK to save the settings.
c.
d.
e.
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15.1.3 Viewing DHCP Clients
The procedure below describes how to view a list of hosts (computers) that are allocated IP
addresses by the DHCP server.
 To view a list of computers currently recognized by the DHCP server:
1.
In the 'IP Address Distribution' screen, click the Connection List button; the 'DHCP
Connections' screen appears.
Figure 15-5: DHCP Connection Screen
15.1.4 Defining Static DHCP Clients
The procedure below describes how to define a static (fixed) IP address for a DHCP client.
 To define a DHCP client with a fixed IP address:
1.
In the 'IP Address Distribution' screen, click the Connection List button; the 'DHCP
Connections' screen appears.
2.
Click the New
icon; the 'DHCP Connection Settings' screen appears.
Figure 15-6: DHCP Connection Settings Screen
3.
In the 'Host Name' field, enter a host name for this connection.
4.
In the 'IP Address' field, enter the fixed IP address to be assigned to the computer.
5.
In the 'MAC Address' field, enter the MAC address of the computer's network card.
Note: A device's fixed IP address is actually assigned to the specific network card's
(NIC) MAC address installed on the LAN computer. If you replace this network
card then you must update the device's entry in the DHCP Connections list with
the new network card's MAC address.
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6.
Click OK to save the settings; the 'DHCP Connections' screen reappears displaying the
defined static connection. This connection can be edited or deleted.
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15.2
15. Advanced Networking Features
DNS Server
The DNS Server
icon allows you to manage the MP252 Domain Name System (DNS)
server. The DNS server does not require configuration. However, you can view the list of
computers known by the DNS, edit the host names or IP addresses of computers in the list,
or manually add a new computer to the list.
DNS provides a service that translates domain names into IP addresses and vice versa.
MP252's DNS server is an auto-learning DNS, which means that when a new computer is
connected to the network, the DNS server learns its name and automatically adds it to the
DNS table. Other network users may immediately communicate with this computer using
either its name or its IP address.
The MP252 DNS server also provides the following functionalities:
Shares a common database of domain names and IP addresses with the DHCP server.
Supports multiple subnets within the LAN simultaneously.
Automatically appends a domain name to unqualified names.
Allows new domain names to be added to the database using MP252's Web interface.
Permits a computer to have multiple host names.
Permits a host name to have multiple IPs (needed if a host has multiple network cards).
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 To add a new host computer to the DNS table:
1.
In the 'Advanced' screen, click the
icon; the DNS table is displayed.
Figure 15-7: DNS Server
2.
Click the New
icon; the 'DNS Entry' screen appears.
Figure 15-8: DNS Entry
3.
Enter the computer's host name and IP address.
4.
Click OK to save your changes.
 To edit the host name or IP address of an entry:
1.
Click the Edit
icon corresponding to the host that you want to edit; the 'DNS Entry'
screen appears.
2.
If the host was manually added to the DNS Table, you can modify its host name and/or
IP address. If it wasn't, you can only modify its host name.
3.
Click OK to save your changes.
 To remove a host from the DNS table:
15.3
Click the Remove
icon corresponding to the host that you want to delete; the entry is
removed from the table.
Dynamic DNS
The Dynamic DNS (DDNS) feature allows you to alias a dynamic IP address to a static
hostname, allowing your computer to be more easily accessible from various locations on the
Internet. Typically, when you connect to the Internet, your ITSP assigns an unused IP
address from a pool of IP addresses, and this address is used only for the duration of a
specific connection. Dynamically assigning addresses extends the usable pool of available
IP addresses, whilst maintaining a constant domain name.
When using the DDNS service, each time the IP address provided by your ITSP changes,
the DNS database changes accordingly to reflect the change. In this way, even though your
IP address changes often, your domain name remains constant and accessible.
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To be able to use the Dynamic DNS (DDNS) feature, you must first open a free DDNS
account at http://www.dyndns.org/account/create.html. When applying for an account, you
need to specify a user name and password. Have them readily available when customizing
MP252's DDNS support. For detailed information on DDNS, see http://www.dyndns.org.
 To open a dynamic DNS account:
1.
In the 'Advanced' screen, click the Personal Domain Name (Dynamic DNS)
the 'Personal Domain Name (Dynamic DNS)' screen appears.
icon;
Figure 15-9: Personal Domain Name (Dynamic DNS) Screen
2.
Click the New
icon to add a new connection; the 'Personal Domain Name (Dynamic
DNS)' screen appears.
Figure 15-10: Personal Domain Name (Dynamic DNS) - Adding
3.
In the ‘Host Name’ field, enter your full DDNS domain name.
4.
From the ‘Connection’ drop-down list, select the connection to which you want to couple
the DDNS service. The DDNS service uses only the selected device, unless failover is
enabled. In this case, the failed-to device is used instead (assuming its route rules
consent), until the chosen device is up again. In a single WAN scenario, this field
appears as static text (non-configurable). This is applicable if you have multiple WAN
devices.
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5.
From the ‘Provider’ drop-down list, select your DDNS service provider and then click the
link Click here to initiate and manage your subscription to open the selected
provider's account creation Web page. For example, if you select ‘dyndns.org’, the
following page opens: http://www.dyndns.com/account.
6.
In the ‘User Name’ and ‘Password’ fields, enter your DDNS user name and password,
respectively.
7.
To enable use of special links (such as such as www..dyndns.org), select
the ‘Wildcard’ check box.
8.
In the ‘Mail Exchanger’ field, enter your mail exchange server address to redirect all
e-mails arriving at your DDNS address to your mail server.
9.
To designate the mail exchange server as a backup server, select the ‘Backup MX’
check box.
10. To temporarily take your site offline (i.e., prevent traffic from reaching your DDNS
domain name), select the ‘Offline’ check box. This redirects DNS requests to an
alternative, predefined URL. The availability of this feature depends on your DDNS
account's level of service. The redirection URL must be configured through the account
as well.
11. From the ‘SSL Mode’ drop-down list, select the certificate validation method used by
MP252 to validate the DDNS server's certificate upon secured connection to DDNS
using HTTPS:
•
None: The server's certificate is not validated.
•
Chain: Validates the entire certificate chain. When selecting this option, the screen
refreshes, displaying the 'Validate Time' drop-down list for selecting whether or not
to validate the certificate's expiration time ('Ignore' or 'Check' respectively). If the
certificate has expired, the connection terminates immediately.
•
Direct: Ensures that the server's certificate is directly signed by the root certificate.
This option also provides the 'Validate Time' drop-down list for validation of the
certificate's expiration time, as described above.
12. Click OK.
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15.4
15. Advanced Networking Features
Routing
This section describes how to configure routing rules and enable routing protocols. These
are configured in the ‘Routing’ screen, as described below.
 To access the Routing screen:
In the 'Advanced' screen, click the Routing
icon; the 'Routing' screen appears.
Figure 15-11: Routing Rules
15.4.1 Managing Routing Table Rules
The procedure below describes how to add routing rules.
 To add routing tables:
1.
In the 'Advanced' screen, click the New
Settings' screen appears.
icon in the Routing Table; the 'Route
Figure 15-12: Route Settings Screen
2.
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3.
In the ‘Destination’ field, enter the destination host, subnet address, network address, or
default route. The destination for a default route is “0.0.0.0”.
4.
In the ‘Netmask’ field, enter the network mask that used in conjunction with the
destination to determine when a route is used.
5.
In the ‘Gateway’ field, enter the MP252's IP address.
6.
In the ‘Metric’ field, enter the measurement of the preference of a route. Typically, the
lowest metric is the most preferred route. If multiple routes exist to a given destination
network, the route with the lowest metric is used.
7.
Click OK to save your settings.
15.4.2 Routing Protocols
MP252 supports IGMP multicasting, which allows hosts connected to a network to be
updated whenever an important change occurs in the network. A multicast is simply a
message that is sent simultaneously to a pre-defined group of recipients. When you join a
multicast group you receive all messages addressed to the group, similar to an e-mail
message sent to a mailing list.
IGMP multicasting enables UPnP capabilities over wireless networks and may also be useful
when connected to the Internet through a router. When an application running on a computer
in the home network sends out a request to join a multicast group, MP252 intercepts and
processes the request. If MP252 is set to 'Minimum Security', no further action is required.
However, if MP252 is set to 'Typical Security' or 'Maximum Security', you must add the
group's IP address to MP252's 'Multicast Groups' screen. This allows incoming messages
addressed to the group to pass through the MP252 firewall and on to the correct LAN
computer.
 To configure routing protocols:
1.
In the 'Advanced' screen, under the Internet Group Management Protocol (IGMP)
group, do the following:
a.
b.
c.
2.
3.
15.5
Select the 'Enabled' check box to enable IGMP multicasting.
Select the ‘IGMP Fast Leave' check box if you want MP252 to stop forwarding
traffic to a host that is the only subscriber, immediately upon request (without query
delay).
Select the 'IGMP Multicast to Unicast' check box to enable MP252 to convert the
incoming multicast data stream into unicast format to route it to the specific LAN
host that requested the data. In this way, MP252 prevents flooding the rest of the
LAN hosts with irrelevant multicast traffic.
Under the Packet Streaming Engine group, from the ‘Software Acceleration’
drop-down list, select the packet flow speed:
•
None: Packet Streaming Engine (PSE) is disabled
•
Medium: PSE is active (recommended)
•
High: PSE traffic is prioritized over other traffic
Click OK.
PPPoE Relay
PPPoE relay enables MP252 to relay packets on PPPoE connections while keeping its
designated functionality for any additional connections.
 To enable PPPoE relay:
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In the 'Advanced' screen, click the PPPoE Relay
appears.
icon; the 'PPPoE Relay' screen
Figure 15-13: PPPoE Relay Screen
2.
Select the 'Enabled' check box.
3.
Click OK.
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16.1
Universal Plug and Play
Universal Plug-and-Play (UPnP) is a networking architecture that provides compatibility
among networking equipment, software, and peripherals. UPnP-enabled products can
seamlessly connect and communicate with other UPnP-enabled devices without the need for
user configuration, centralized servers, or product-specific device drivers. This technology
leverages existing standards and technologies, including TCP/IP, HTTP 1.1 and XML,
facilitating the incorporation of UPnP capabilities into a wide range of networked products for
the home.
UPnP technologies are rapidly adopted and integrated into widely-used consumer products
such as Windows XP. Therefore it is critical that today's Residential Gateways be
UPnP-compliant. Your MP252 is at the forefront of this development, offering a complete
software platform for UPnP devices. This means that any UPnP-enabled control point (client)
can dynamically join the network, obtain an IP address and exchange information about its
capabilities and those of other computers on the network. They can subsequently
communicate with each other directly, thereby further enabling peer-to-peer networking. And
this all happens automatically, providing a truly zero-configuration network.
16.1.1 Enabling UPnP on MP252
The procedure below describes how to enable the UPnP feature on MP252.
 To enable UPnP:
1.
In the 'Advanced' screen, click the Universal Plug and Play
Plug and Play' screen appears.
icon; the 'Universal
Figure 16-1: Advanced - Universal Plug n Play
2.
Select the ‘Allow Other Network Users to Control MP252’s Network Features’ to enable
the UPnP feature. This allows you to define UPnP services on any of the LAN hosts.
3.
Select the ‘Enable Automatic Cleanup of Old Unused UPnP Services’ to enable
automatic cleanup of invalid rules. This feature checks the validity of all UPnP services
every five minutes, and removes old and obsolete services, unless a user-defined rule
depends on them.
4.
From the ‘WAN Connection Publication’ drop-down list, select which WAN information
is published by MP252. By default, MP252 publishes only its main WAN connection,
which is controllable by UPnP entities. However, you may select the 'Publish All WAN
Connections' option if you wish to grant UPnP control over all of MP252’s WAN
connections.
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16.1.2 Adding UPnP-enabled PC to Home Network
If your computer is running an operating system that supports UPnP such as Windows XP,
you can add the computer to your home network and access the Web-based Management
directly from Windows.
 To add a UPnP-enabled computer to the home network:
Connect the PC to MP252; the PC automatically recognizes and adds to the home
network. MP252 is added to 'My Network Places' as the Internet Gateway Device and
allows configuration via a standard Windows interface. A message appears on the
notification area of the taskbar notifying that the PC has been added to the network.
 To access the Web-based management directly from Windows:
1.
Open the 'My Network Places' window by double-clicking its desktop icon.
Figure 16-2: My Network Places
2.
Double-click the MP252 Internet Gateway Device icon. The MP252 Web interface
‘Login’ screen appears in a browser window. This method is similar to opening a
browser window and typing in '192.168.1.1'.
16.1.3 Monitoring Connection between MP252 and Internet
The procedure below describes how to monitor the status of the connection between MP252
and the Internet.
 To monitor the status of the connection between MP252 and the Internet:
1.
Open the 'Network Connections' control panel.
2.
Double-click the Internet Connection icon. The 'Internet Connection Status' window
appears:
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Figure 16-3: Internet Connection Status
16.1.4 Making Local Services available to PCs on Internet
You can make services provided by computers in the home network available to computers
on the Internet. For example, you may designate a PC in your home network to act as a Web
server, allowing computers on the Internet to request pages from it. Or a game that you want
to play over the Internet may require that specific ports be opened to allow communication
between your PC and other players.
 To make local services available to computers on the Internet:
1.
Open the 'Network Connections' control panel.
2.
Right-click 'Internet Connection', and then choose Properties; The 'Internet Connection
Properties' window appears.
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Figure 16-4: Internet Connection Properties
3.
Click the Settings button; the 'Advanced Settings' window.
Figure 16-5: Advanced Settings
4.
Select a local service that you would like to make available to computers on the Internet;
the 'Service Settings' window automatically appears.
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Figure 16-6: Service Settings
5.
Enter the local IP address of the computer that provides this service and then click OK.
6.
Select other services as desired and repeat the previous step for each.
7.
Click OK to save the settings.
 To add a local service that is not listed in the 'Advanced Settings'
window:
1.
Follow steps 1-3 above.
2.
Click the Add button; the 'Service Settings' window appears.
Figure 16-7: Service Settings – Add Service
3.
Complete the fields as indicated in the window.
4.
Click OK to close the window and return to the 'Advanced Settings' window; the service
is selected.
5.
Click OK to save the settings.
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Add-On Servers and Disk Management
17.1
External File Server
MP252 provides a file server utility, allowing you to perform various tasks on your files, such
as manage file server shares and define access control lists. The file server utility
complements MP252’s disk management.
 To configure the file server:
1.
In the 'Advanced' screen, click the File Server
opens.
icon; the screen File Server'
Figure 17-1: File Server Screen
2.
Configure the following:
•
Enabled: Select or clear this check box to enable or disable this feature.
•
NetBIOS Workgroup: MP252 workgroup name that is displayed in the Windows
network map of LAN hosts.
•
Automatic Sharing:
♦
Automatically Share All Partitions: A partitioned storage device connected
to MP252 is automatically displayed and shared by all LAN computers. This
feature is enabled by default.
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•
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Allow Guest Access: From the drop-down list, select a permission level,
according to which the LAN users access the share:
 Read/Write: Every LAN user can read and write the shared files without
authentication.
 Read Only: Every LAN user can only read the shared files.
 Disabled: LAN users must authenticate themselves to access the share.
They can use the share according to their permissions defined in the
'User Settings' screen.
File Server Shares: Define file shares on your disk partitions, as described in the
following sections.
17.1.1 Automatic File Sharing
By default, all partitions are automatically shared and displayed.
 To share specific directories or partitions:
1.
Clear the 'Automatically Share All Partitions' check box, and then click Apply. The list of
all automatically shared partitions disappears.
2.
In the ‘File Server Shares’ table, click New
Server Share Settings' screen appears.
icon to define a new share; the 'File
Figure 17-2: File Server Share Settings Screen
3.
Enter the share's name (default is “share”), path, and (optionally) comment. The share's
name is not case sensitive. Even if entered in upper-case letters, the name is displayed
in lower case after saving the setting.
4.
Associate a user or group of users with the share to grant them access to the shared
files, by clicking the New User or New Group link in the Users or Groups table. Note
that the user’s settings must have the ‘Microsoft File and Printer Sharing Access’ check
box selected under the 'Permissions' section (see ‘Configuring Users’ on page 44); the
‘User’ screen appears:
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Figure 17-3: User Screen
d.
e.
5.
From the ‘Name’ drop-down list, select the user name and the allowed access.
Click OK.
Click OK to save the settings. The 'File Server' screen appears, displaying the share.
Figure 17-4: File Server Screen with the Share
Click the share's name to view its content. The screen refreshes as the share is accessed
This screen enables you to modify and view the content of your file share. In the upper
section of this screen, you can modify your file share by adding files or directories to it. Use
the drop-down list to select an action:
Upload a File: Uploads a file to the share. The screen refreshes - enter the location of
the file to upload, or click the Browse button to browse for the file. Click the Upload
button to upload the file.
Upload a Directory: You can also upload an entire directory of files, by performing the
following:
a.
b.
c.
Create a tarball archive out of the target directory.
Enter the location of the archive, or click the Browse button to browse to its
location.
Click the Upload button to upload the archive.
Create a new Directory: You can create a new directory by simply typing its name and
clicking Go.
Paste from Clipboard: This option appears only after using the 'Copy to Clipboard'
option to copy a directory or file from one directory to another.
The lower section of the screen displays your share's content. You can click the different
directory names to access them or you can download, rename, copy or remove the
directories using the standard action icons.
17.2
Disk Management
The Disk Management
icon allows you to configure disk management. MP252 can
operate as a disk manager for either internal disks connected through IDE, or external
storage devices connected through USB or FireWire. Your home-network's LAN devices can
share this storage device as a mapped network drive and exchange information without
directly accessing each other. The Web interface provides disk management utilities such as
partitioning and formatting.
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An internal disk or a connected storage device appears in the Network Map (see Section 5
on page 55). You can view information about the disk by clicking its icon.
The device supports storage devices with FAT32, NTFS, and Linux EXT2/3 file systems.
These file systems have different sharing and security settings. If the connected storage
device or at least one of its partitions has the NTFS file system, a message appears in the
'Disk Management’ screen appears.
Note: MP252 based on the Conexant Solos, Mindspeed Malindi2 or Freescale
platform allows both read and write access to an NTFS partition.
 To configure disk management:
1.
In the 'Advanced' screen, click the
icon; the ‘Disk Management' screen appears.
Figure 17-5: Disk Management Screen
Note: To define a system storage area, the disk or at least one of its partitions should
be formatted. This storage area holds the data used by the MP252’s services.
For security, it is recommended to format the disk or its partition in the EXT2 or
EXT3 file system, although FAT32 is supported as well.
2.
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3.
To set the first identified formatted partition as the location of the system storage area,
select the ‘Automatically Create System Storage Area’ check box. This setting is valid
until the storage device is disconnected. When reconnected, MP252 may select another
partition for this purpose. To define the system storage area manually, clear this check
box. The screen refreshes, displaying the 'System Storage Area' field in which you must
enter the partition's letter. In this scenario, the setting remains permanent even after the
storage device is disconnected and reconnected afterwards.
Figure 17-6: Manually Defining System Storage Area
4.
In the Disks table, you can view a list of your connected storage devices. The 'Device'
column displays the names MP252 grants connected devices. Click this link to view the
device's 'Disk Information' screen. If a disk is partitioned, the 'Partitions' column displays
its partition names. If the partitions are formatted, their name includes a letter.
5.
In the RAID Devices table, you can view the RAID devices (if configured).
17.2.1 Disk Partitions
This section describes how to configure partition and format storage devices.
17.2.1.1 Connecting a Mass Storage Device
To set up a file server that is shared by all LAN computers, you need to connect a mass
storage device (e.g. disk-on-key or hard drive) to the USB port on your MP252. A mass
storage device must first be partitioned and formatted. If your device is already partitioned, it
is recommended that you delete its partitions before proceeding, as a partition can only be
added on unallocated disk space.
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 To add a Windows formatted partition:
1.
In the Disks table in the 'Disk Management' screen, click the disk device link. The 'Disk
Information' screen appears.
Figure 17-7: Disk Information
2.
In the 'Partitions' table, click the Add New Partition icon; the 'Partition Type' screen
appears.
Figure 17-8: Partition Type
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3.
Select 'Primary Partition', and then click Next; the 'Partition Size' screen appears.
Figure 17-9: Partition Size
4.
Enter a volume for the new partition (in mega bytes), and then click Next; the 'Partition
Format' screen appears.
Figure 17-10: Partition Format
5.
Select 'Format the Partition', and then click Next; the 'Partition File System' screen
appears.
Figure 17-11: Partition File System
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Select 'Windows (FAT32) (LBA)' as the file system for the partition and then click Next;
the 'Partition Summary' screen appears.
Figure 17-12: Partition Summary
7.
Click Finish to create the new partition; the 'Disk Information' screen reappears,
refreshing as the partition formatting progresses, until the status changes to 'Ready'.
Figure 17-13: Formatting Complete – Partition Ready
The new partition names are designated as "A", "B" etc, and appear under the 'Name'
column of the 'Partitions' section.
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17.2.1.2 Formatting a Partition
A partition can be formatted in EXT2, EXT3, FAT32 and NTFS file systems.
 To partition a disk:
1.
In the Disks table in the 'Disk Management' screen, click the disk device link; the 'Disk
Information' screen appears.
2.
In the 'Partitions' table, click the Edit Partition icon of the partition you would like to edit;
the 'Partition Properties' screen appears.
Figure 17-14: Partition Properties
3.
Click Format Partition; the 'Partition Format' screen appears.
Figure 17-15: Partition Format
4.
Select a file system for the partition and then click Next. A warning screen appears,
alerting you that all the data on the partition will be lost.
5.
Click OK to format the partition; the screen refreshes as the partition formatting
progresses. When the format is complete, the status will change to 'Ready'.
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17.2.1.3 Checking a Partition
The procedure below describes how to check a partition.
 To check a partition:
1.
In the Disks table in the 'Disk Management' screen, click the disk device link; the 'Disk
Information' screen appears.
2.
In the 'Partitions' section, click the Edit Partition icon of the partition you would like to
check; the 'Partition Properties' screen appears.
Figure 17-16: Partition Format
3.
Click Check Partition; a warning screen appears, alerting you that the partition will be
set to offline.
4.
Click OK; the screen refreshes as the partition checking progresses. When the check is
complete, the status changes to 'Ready'.
17.2.1.4 Deleting a Partition
The procedure below describes how to delete a partition.
 To delete a partition:
1.
In the Disks table in the 'Disk Management' screen, click the disk device link; the 'Disk
Information' screen appears.
2.
In the 'Partitions' section, click the Remove Partition icon of the partition you would like
to delete; a warning screen appears, alerting you that all the data on the partition will be
lost.
3.
Click OK to delete the partition.
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17.2.2 System Storage Area
MP252 uses a specific location on a storage device for storing data used by its various
services. The following are the services that use the system storage area:
Printer spool and drivers
Mail server spool
Backup of MP252’s configuration file (rg_conf)
PBX-related audio files for voice mail, auto attendants and music on-hold
FTP server
Mail boxes information
Users' home directories
Web server content
Prior to enabling these services, you should create either EXT2/3 (recommended) or FAT32
partitions, as described in the previous sections, and define at least one of them as the
system storage area.
Note: Data cannot be written to partitions formatted with NTFS, unless MP252 is
based on the Conexant Solos, Mindspeed Malindi2 or Freescale platform.
Consequently, if you define an NTFS partition as the system storage area, the
services mentioned earlier will not operate on MP252.
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 To define a system storage area:
1.
Under the System Storage Area group in the 'Disk Management' screen, clear the
‘Automatically Create System Storage Area’ check box; the screen refreshes displaying
the 'System Storage Area' field, in which you must enter the partition's letter.
Figure 17-17: Disk Management Screen – Check Box Cleared
2.
Click OK to save the settings.
If you wish to view the system directories, verify that the system storage area is shared. Then,
browse to \\mp252 (use a Windows Explorer window if you are using a browser other than
Internet Explorer).
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17.2.3 RAID Management
MP252 supports Redundant Array of Independent Disks (RAID) on storage devices
connected to it by USB or by FireWire. A RAID device is a logical device that has physical
devices underlying it. These physical devices are disk partitions. The supported RAID levels
are:
Level 0 – Provides data striping, or spreading out blocks of each file across multiple
disk drives, but no redundancy. This improves performance but does not deliver fault
tolerance. If one drive fails then all data in the array is lost.
Level 1 – Provides disk mirroring. This is a technique in which data is written to two
duplicate disks simultaneously, providing data redundancy. This method improves
performance and delivers fault tolerance.
Level 5 – With a minimum of three disks, this level provides data striping and utilizes
one disk for backup information, which enables it to restore any other disk in the array.
Before creating the RAID device, you must create disk partitions (as described previously) on
the different disk drives. Each RAID device can have multiple underlying devices (partitions).
When using RAID1, it is recommended that these partitions be of the same size to avoid
disk-space loss due to mirroring. A disk partition configured with RAID can no longer be
managed as a regular partition, but only be controlled by the RAID device. From the moment
RAID is configured, it is the RAID device that can be shared, scanned, formatted and
mounted as a regular partition.
17.2.3.1 Creating a RAID Device
The procedure below describes how to create a RAID device.
 To create a RAID device:
1.
In the RAID Devices table in the ‘Disk Management’ screen, click the Add RAID
Device link; the 'RAID Properties' screen appears:
Figure 17-18: RAID Properties Screen
2.
From the ‘RAID Level’ drop-down list, select the RAID level (RAID0, RAID1 or RAID5).
3.
In the 'Mount Point' field, enter a name for the mount point of the RAID device.
4.
Choose the underlying devices (your pre-configured partitions) in the next drop-down
lists. For RAID1 you may choose only one device and later add another one.
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Click Next; the 'Partition Format' screen appears.
Figure 17-19: Partition Format Screen
6.
Select 'Format the partition' and then click Next.
Figure 17-20: Partition File System Screen
7.
Select the format type, and then click Next; the 'Partition Summary' screen displays a
summary of the chosen device properties.
Figure 17-21: Partition Summary Screen
8.
Click the Finish button to execute the RAID device creation.
As soon as a RAID device is created, its formatting begins. If the device is RAID1 and has
two underlying devices, its re-synchronization process (partition mirroring) begins
simultaneously. During re-synchronization the RAID device is fully usable and can be
mounted and used.
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The figure below depicts a successful configuration of two RAID devices as they appear in
the Raid Devices table in the 'File Server' screen. The first is RAID0, consisting of two
underlying partitions (one on each disk), and the second is RAID1, consisting of another set
of underlying partitions. Note that the RAID0 total space is the sum of the two partitions, while
the RAID1 total space is the size of one partition (due to mirroring).
Figure 17-22: Added RAID Devices
17.2.3.2 Using a RAID Device
When RAID is configured over the existing partitions, these partitions are no longer
independent. It is therefore necessary that you update the location of the system storage
area:
1.
In the 'Disk Management' screen, verify that the 'Automatically Create System Storage
Area' check box is selected. If you wish to define the system storage area manually,
clear the check box and enter the name of the designated mount point.
2.
Click OK to save the settings.
17.2.3.3 Maintaining a RAID Device
A RAID device differs from a regular partition by not being part of a physical disk. It therefore
resides and is maintained on MP252. RAID maintenance is divided into two aspects:
Maintaining the RAID device itself:
•
In the RAID Device table in the 'Disk Management' screen, click the Edit
icon of
the RAID device; the 'RAID Properties' screen appears in which you can:
♦
Enable or disable the RAID device using the 'Enabled' check box.
♦
Change the mount point assigned to the device.
♦
Add or remove the underlying devices (can be done for RAID1 and RAID5
only).
Maintaining the partition:
•
In the 'RAID Properties' screen, click the device name; the 'Partition Properties'
screen appears in which you can check and format the RAID partition.
17.2.3.4 Replacing RAID Underlying Devices
Adding or removing a RAID underlying device can only be performed on RAID1 and RAID5
configurations. RAID1 can operate with just one device (although mirroring is unavailable),
and RAID5 can operate with one device less than its original amount of devices.
The names of the RAID underlying devices appear on the 'RAID Properties' screen. Each
device is followed by a status:
Active: The device is controlled by RAID.
Inactive: The device failed to join the RAID array or does not exist.
Faulty: The device joined the RAID array but was marked as faulty due to an error. It is
inactive and should be replaced.
Replacing a device on RAID1 or RAID5 is done by first removing the faulty device and then
adding a new one. The new device's size must be at least the size of the existing one.
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 To remove a faulty device from RAID1:
1.
In the 'RAID Properties' screen, click the faulty device's Delete icon.
2.
Click OK.
 To add a new device instead of the one removed:
1.
In the RAID Device table in the 'Disk Management' screen, click the Edit
icon of the
RAID device; the 'RAID Properties' screen appears with a drop-down list allowing you to
choose the new partition to be added.
2.
Choose the partition, and then click OK.
After adding a new device, RAID1 starts a recovery process in which the content of the
existing partition is mirrored to the new device. If the addition or recovery fails, the device
status is set to inactive (this status appears in the 'RAID Properties' screen. In such cases,
the device should be removed and another may be added. You can manipulate your disk
partitions. However, it is recommended to configure your disks before setting up RAID. Once
RAID is configured, you will not be able to delete an underlying partition, or create a new
partition on a disk that one of its partitions is underlying RAID, unless you disable or delete
the RAID device. Changing a disk's partition table when its partitions are under RAID (even if
RAID is disabled) may result in the need to reconstruct the RAID.
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17.3
Print Server
MP252 includes a print server that allows printers attached to MP252 through the USB
connection(s) to be shared by all computers on the LAN. Such a printer appears in the
Network Map. You can access the printer settings directly, by clicking the printer icon in the
Network Map or as described below.
 To configure a print server:
1.
In the 'Advanced' screen, click the Print Server
appears.
icon; the ‘Print Server’ screen
Figure 17-23: Advanced – Print Server Screen
2.
3.
Select or clear (as required) the following check boxes:
•
Enabled: Enables or disables the print server feature.
•
Spool to Disk: Allows print jobs to be written to a disk before printing.
•
Allow Guest Access: Allows network users that have not logged in with a
username and password to use the shared printer. If you want to restrict access to
the network printer, you can clear this check box and grant user-specific
permissions by creating a user set to ‘Internet Printer Access’ (see Section 4.4).
•
LPD Support: Enables the LPD protocol.
•
IPP Support: Enables the IPP protocol.
•
Microsoft Shared Printing Support: Enables the Samba protocol.
The Printers table lists the MP252 printers, their status as well as their print job
information. To view the printer’s properties and optionally, to define a new name for the
printer, click the Edit
icon corresponding to the printer; the 'Printer' screen appears.
Figure 17-24: Advanced – Printer Screen
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4.
To change the displayed name of the printer, in the ‘Name’ field, enter a new name.
5.
To set the printer as the default printer, select the ‘Create Default Device Mode’ check
box.
17.3.1 Connecting and Setting up a Printer on Windows
The procedure below describes how to set up a network printer that is connected to the
MP252 USB port and shared by all LAN computers, running on the Windows operating
system.
Note: The above configuration must be applied to each LAN PC individually in order
to use the network printer.
 To set up a printer running on Windows:
1.
Log in to MP252; the disk and printer shares available on MP252 is displayed:
Figure 17-25: MP252 Shares
2.
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Click the printer icon that you want to designate as a LAN printer; a warning appears.
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3.
Click Yes; you are prompted to select a printer driver from a list. If unavailable, you can
either browse to a location on your computer where you have stored the driver, or click
Have Disk and insert the CD containing the driver (supplied with your printer). After a
short upload and installation of the driver, the printer's print queue window appears,
determining that the printer is ready for use. The new printer is added to your "Printers
and Faxes" list as a network printer (to view this list press, in Windows Control Panel,
select "Printers and Faxes"). As any printer, you can choose to make it your default
printer, or specify its use when printing.
4.
Print a test page by right-clicking the printer icon in the disk and printer shares window
and selecting Properties; the 'Print Test Page' button is located at the bottom of the
General tab.
17.3.2 Print Protocols
The Samba protocol with which you have created a network printer in the previous section,
allows you to upload Windows print drivers to MP252, enabling all Windows-based LAN
hosts to connect to the network printer.
MP252 provides two additional protocols for computers to connect to its printers:
Internet Printing Protocol (IPP) - the recommended protocol, offering fast installation
and ease of use.
Line Printer Daemon (LPD) - legacy network printing protocol, which should only be
used for printing from computers that do not support IPP.
The following table compares the specifications of the three protocols:
Table 17-1: IPP, Samba, and LPD Specifications
Specification
IPP
Samba
LPD
Installation
Easy
Easy
Difficult
Driver upload
None
Supported
None
Supported clients
Windows, Unix, Mac
Windows, Mac
Windows, Unix, Mac
Job feedback and
control
Print queue monitor and Print queue monitor and
management console
management console
Management console
only
Printer control
Print queue monitor
None
None
Access controls
Print and administrator
Print permission only
None
Note: For Mac Users: When connecting a print server to a MAC computer, you must
verify that the printer connected to MP252 is supported by Mac OS as a
network printer. Supported printers are marked with an "X" at the following
URL: http://docs.info.apple.com/article.html?artnum=301175#hpdrivers.
17.3.2.1 Internet Printing Protocol
This section describes how to connect computers to MP252 printers, using the IPP protocol.
17.3.2.1.1 Setting Up an IPP Printer on Windows
The procedure below describes how to set up an IPP printer on Windows.
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 To set up an IPP printer on Windows:
1.
In the 'Network Map' screen, click the printer icon to view the 'Printer' screen.
Figure 17-26: Printer Screen – IPP URL
2.
Copy the IPP URL to the clipboard.
3.
On your Windows computer connected to MP252, from the Start menu, point to
Settings, then Printers and Faxes, and then click Add Printer; the Add Printer Wizard
starts.
4.
Click Next to proceed with the wizard sequence.
5.
Select 'A network printer…' and then click Next.
Figure 17-27: Local or Network Printer
6.
Select 'Connect to a printer on the Internet…', and then paste the printer's IPP URL in
the 'URL' field, and then click Next.
Figure 17-28: Specify a Printer
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You may be asked to select the driver's make and model or its location. If so, provide the
location on MP252 to where you have uploaded the driver (e.g. “\\MP252\A”), and click
Next.
8.
Click Finish to exit the wizard.
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17.3.2.1.2 Setting Up an IPP Printer on Linux
The procedure below describes how to set up an IPP printer on Linux operating systems.
You should use CUPS Daemon (CUPSD) when operating with Linux.
 To set up an IPP printer on Linux:
1.
In the 'Network Map' screen, click the printer icon to view the 'Printer' screen.
Figure 17-29: Printer Screen – IPP URL
2.
Copy the IPP URL to the clipboard.
3.
On your Linux computer connected to MP252, browse to http://localhost:631, and then
choose Manage Printers.
Figure 17-30: Linux CUPS Management
4.
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Click Add Printer.
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Figure 17-31: Add Printer
5.
In the 'Name' field, type the printer's name and then click Continue.
Figure 17-32: Printer Name
6.
From the 'Device' drop-down list, select 'Internet Printing Protocol (http)' and then click
Continue.
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Figure 17-33: Printing Protocol
7.
Paste the printer's IPP URL in the 'Device URI' field, and then click Continue.
Figure 17-34: IPP URL
8.
The next window displays a manufacturer drop-down list. Select your printer's
manufacturer and click Continue.
9.
The next window displays a printer model drop-down list. Select your printer's model
and click Continue.
10. The last window displays the following confirmation message: 'Printer has been added
successfully'.
11. To test your printer's connection from a Linux PC, open a shell and enter the following
command:
$ echo hello | lpr -P
17.3.2.1.3 Setting Up an IPP Printer on Mac
The procedure below describes how to set up an IPP printer on Mac operating systems.
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 To set up an IPP printer on Mac:
1.
On your Mac computer connected to MP252, open the 'Print & Fax' utility from 'System
Preferences'; the 'Print & Fax' screen appears.
Figure 17-35: Print & Fax
2.
Click the + (add) button; the 'Printer Browser' screen appears.
3.
Select the IP Printer tab.
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Figure 17-36: Printer Browser – IP Printer
4.
In this screen, configure the following:
a.
b.
c.
d.
e.
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From the 'Protocol' drop-down list, select IPP.
In the 'Address' field, enter MP252’s IP address (192.168.1.1).
In the 'Queue' field, enter the section of the path containing the folder and printer
names, as it appears in the 'Printer' screen. For example, “/printers/MFC9750”.
The 'Name' and 'Location' fields are optional; the default name is the gateway's IP
address.
From the 'Print Using' drop-down list, select your printer's make and model.
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5.
Click the Add button; the new printer appears in the 'Print & Fax' screen.
Figure 17-37: Print & Fax – New IPP Printer
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17.3.2.2 Microsoft Shared Printing (Samba)
The procedure below describes how to set up Microsoft Shared Printing (Samba).
 To set up Microsoft shared printing (Samba):
1.
On your Mac computer connected to MP252, open the 'Print & Fax' utility from 'System
Preferences'; the 'Print & Fax' screen appears.
Figure 17-38: Print & Fax
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2.
Click the + (add) button; the 'Printer Browser' screen appears.
Figure 17-39: Printer Browser – Default Browser
3.
Click the More Printers button; The following screen appears.
Figure 17-40: Printer Browser – More Printers
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4.
From the second drop-down list, select 'Network Neighborhood'.
5.
Select the 'Home' workgroup and then click Choose.
Figure 17-41: Printer Browser – MP252
6.
Select MP252, and then click Choose.
7.
Select the printer, and from the 'Printer Model' drop-down list, select your printer's make
and model.
Figure 17-42: Printer Browser – Printer Model
8.
Click Add; the new printer appears in the 'Print & Fax' screen.
Figure 17-43: Print & Fax – New Samba Printer
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17.3.2.3 Line Printer Daemon (LPD)
This section describes how to connect computers to MP252 printers, using the LPD protocol.
17.3.2.3.1 Setting Up an LPD Printer on Windows
Before configuring the LPD protocol on a LAN PC, ensure that a print driver for the specific
printer is installed.
Note: The following configuration must be applied to each LAN PC individually in
order to use the network printer.
 To set up an LPD printer on Windows:
1.
On your Windows computer connected to MP252, from the Start menu, point to
Settings, then Printers and Faxes, and then click Add Printer; the Add Printer Wizard
starts.
2.
Click Next to proceed with the wizard sequence.
3.
Select 'Local printer attached to this computer' and then click Next.
4.
Clear the 'Automatically detect and install my Plug and Play printer', and then click Next.
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Figure 17-44: Local Printer
5.
Select the 'Create a new port' option.
6.
From the 'Type of port' drop-down list, select 'Standard TCP/IP Port'.
Figure 17-45: Select a Printer Port
7.
Click Next to activate the 'Add Standard TCP/IP Printer Port Wizard'.
8.
Click Next to proceed with the new wizard.
9.
In the 'Printer Name or IP Address' field, specify 192.168.1.1, and then click Next.
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Figure 17-46: Add Port
10. Select the 'Custom' option, and then click Settings.
Figure 17-47: Additional Port Information
11. In the 'Configure Standard TCP/IP Port Monitor' window, configure the following
parameters:
a.
Select the 'LPR' option.
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c.
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In MP252’s Web interface, open the 'Print Server' screen.
Copy the printer's name (for example, "Officejet4000") and paste it in the 'Queue
Name' field of the port monitor configuration window.
Figure 17-48: Printer Port Monitor Configuration
12. Click OK, and then click Finish; the 'Add Printer Software' wizard reappears.
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Figure 17-49: Add Printer Wizard
13. Select your printer manufacturer and model from the lists. If it does not appear in the
lists, click 'Have disk' to specify the driver location.
14. Specify the name you want to give the printer, and whether you want it to be the default
printer. Click Next.
15. Click Next to proceed to the final wizard screen.
16. Select Yes to print a test page.
17. Click Finish to complete the setup procedure.
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17.3.2.3.2 Setting Up an LPD Printer on Mac
The procedure below describes how to set up an LPD printer on Mac operating systems.
 To set up an LPD printer on Mac:
1.
On your Mac computer connected to MP252, open the 'Print & Fax' utility from 'System
Preferences'; the 'Print & Fax' screen appears.
Figure 17-50: Print & Fax
2.
Click the + (add) button; the 'Printer Browser' screen appears.
3.
Select the IP Printer tab and the configure the following:
a.
b.
c.
d.
e.
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From the 'Protocol' drop-down list, select LPD.
In the 'Address' field, enter MP252’s IP address (192.168.1.1).
In the 'Queue' field, enter the printer's name as it appears in the 'Printer' screen of
the Web interface. For example, MFC9750.
The 'Name' and 'Location' fields are optional; the default name is the gateway's IP
address.
From the 'Print Using' drop-down list, select your printer's make and model.
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Figure 17-51: Printer Browser – LPD Printer
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Click Add; the new printer appears in the 'Print & Fax' screen.
Figure 17-52: Print & Fax – New LPD Printer
17.3.3 Storing and Using Printer Drivers
As explained earlier in this chapter, to use a shared printer connected to MP252, a driver for
the printer must be installed on the LAN computer from which the print job is to be sent. You
can use the MP252 file server to store printer drivers.
The drivers should be uploaded from a Windows computer and stored in the system storage
area that you have created on one of the disk partitions. The printer can then be installed on
other LAN computers using the driver stored on MP252.
 To upload the driver files to MP252:
1.
From Window's Start menu, click Run, and then type "cmd" to open a command shell.
2.
At the prompt, type net use to view the list of shares and their status.
3.
Type net use /del \\mp252\share-B to delete the specific network mapping entry.
Alternatively, you can use net use /del * to delete all network mapping entries.
4.
Type net use * \\openrg\print$ [Admin's password] [/user:admin]. This ensures that
you are logged into the print server using the Admin user and have the permissions to
upload files.
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5.
Browse to \\mp252 (use a Windows Explorer window if you are using a browser other
than Internet Explorer). Should a Windows login dialog box appear, enter your Web
username and password. The following window appears, displaying the disk and printer
shares available on MP252.
Figure 17-53: MP252 Shares
6.
Click Printers and Faxes.
7.
Right-click the printer icon, and then select Properties.
8.
If your operating system does not already have the driver, you will be asked if you want
to install it now. Click No.
9.
Select the Advanced tab, and then click New driver; the 'Add Printer Driver Wizard on
MP252 starts. You are prompted to select a printer driver from a list. If unavailable, you
can either browse to a location on your computer where you have stored the driver, or
click Have Disk and insert the CD containing the driver (supplied with your printer).
10. Click OK; the driver is uploaded to MP252’s system storage directory (e.g. “\\mp252\A”).
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18
Maintenance
18.1
About MP252
The About MP252
icon displays information about MP252. This includes the software
version, release date, signaling protocol, and DECT base unit version . You can also
upgrade the software running on MP252, by clicking the Upgrade link (for more information,
see Section 18.5 on page 323).
 To view information about MP252:
In the 'Advanced' screen, click the
icon; the 'About MP252' screen appears.
Figure 18-1: About MP252 Screen
The DECT feature is applicable only to the MP252WDNB model.
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18. Maintenance
Date & Time
The procedure below describes how to set the date and time.
 To configure date, time and daylight savings time settings:
1.
In the 'Advanced' screen, click the Time Settings
appears.
icon; the 'Date & Time' screen
Figure 18-2: Date and Time Screen
2.
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From the 'Time Zone' drop-down list, select the local time zone. MP252 can
automatically detect daylight saving setting for selected time zones.
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3.
4.
Under the Daylight Saving Time group, configure the daylight saving settings for your
time zone (if they are not automatically detected):
•
Enabled: Select this check box to enable daylight saving time.
•
Start: Date and time when daylight saving starts.
•
End: Date and time when daylight saving ends.
•
Offset: Daylight saving time offset.
For the MP252 to perform an automatic time update, under the Automatic Time
Update group, do the following:
a.
b.
c.
d.
Select the 'Enabled' check box.
Select the protocol to be used for time update, by selecting either the 'Time of Day'
or 'Network Time Protocol' option.
In the 'Update Every' field, specify how often to perform the update.
You can define NTP servers, by clicking the New
Settings’ screen appears.
icon; the ‘Time Server
Figure 18-3: Time Server Settings Screen
e.
In the ‘Time Server’ field, enter the IP address of the Time server (NTP), and then
click OK.
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18.3
18. Maintenance
Backup and Restore
The Backup and Restore
icon allows you to configure the MP252 backup facility for
backing up data, stored in the system storage area, to external USB disks. You may specify
backups to run automatically at scheduled times.
Two prerequisites must be met before enabling the backup mechanism:
The file server feature must be activated and configured
The file server must consist of at least two disks
Note: The backup is done at the directory level. In other words, it is not possible to
backup a single stand-alone file.
18.3.1 Backing Up Data
The procedure below describes how to backup data.
 To backup data:
1.
In the 'Advanced' screen, click the
2.
Select the Backup tab.
icon; the ‘Backup and Restore’ screen appears.
Figure 18-4: Backup and Restore Screen
3.
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Figure 18-5: Edit Backup Screen
4.
In the ‘Source’ field, type the source to backup, for example, “A/homes”.
5.
In the ‘Destination’ field, type the destination of the backup files, for example,
“B/backups”. It is recommended that the destination is an external storage device.
6.
Choose between full backup, incremental backup, or both, by scheduling a time for the
backup operation. You can choose between daily, weekly or monthly backups in the
'Schedule' drop-down lists.
st
Note: Do not schedule a monthly backup on the 31 of the month, as backups do not
run on months with 30 days.
7.
Click OK to save the schedule settings.
8.
Click Backup Now to run the backup operation immediately. When backing up, the
screen displays the status and progress of the operation.
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18.3.2 Restoring Your Data
The procedure below describes how to restore data.
 To restore data:
1.
In the 'Advanced' screen, click the
2.
Select the Restore tab; the 'Restore' screen appears.
icon; the ‘Backup and Restore’ screen appears.
Figure 18-6: Restore Screen
3.
In the 'Source Archive' field, type the source to restore, for example, “A/homes”.
4.
From the 'Restore Option' drop-down list, select whether to restore the entire archive or
only a subdirectory. If you choose subdirectory, a second field appears in which you
must enter the name of the subdirectory relative to the source archive. For example, to
restore “A/homes/john”, type “john” as the subdirectory.
5.
From the ‘Destination' drop-down list, select a destination for which to restore the
archive. You can choose the original location or any other directory. If you choose
another directory, a second field appears in which you must enter the name of the
directory. Note that the path of the restored directory is created under the path of the
destination directory. For example, if you specify the directory “A/restore_dir”, the result
is “A/restore_dir/A/homes/john”.
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18.4
Configuration File
The Configuration File
icon allows you to view, save, and load the MP252
configuration file. Therefore, you can backup and restore your current configuration.
MP252 also supports configuration file encryption, allowing you to load encrypted
configuration files (using the file name extensions *.cfx or *.inx). For more information on
encrypting a configuration file, see Section 18.4.3 on page 321.
MP252 allows you to use un-encrypted passwords in the configuration file (*.cfg or *.ini) that
you want to load, and then encrypt the passwords before burning to flash. This is achieved by
using the format {“”} in the configuration file for password fields which are normally
encrypted. Below are two examples of this feature:
ini file: rg_conf/voip/line/1/auth_password={"foobaa"}
cfg file: (auth_password({"foobaa"}))
 To save and restore the configuration file:
1.
In the 'Advanced' screen, click the
icon; the 'Configuration File' screen appears,
showing the entire contents of the configuration file.
Figure 18-7: Configuration File Screen
2.
You can customize the displayed configuration file, by selecting the following check
boxes:
•
Display modified configuration fields only: Displays only the configuration
parameters that have values other than default values.
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3.
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Display configuration in flat ini-file format: Displays the configuration file in flat
INI-file format.
To back up your current configuration to a file on your PC, click Download
Configuration File. The saved configuration file can be used as a backup for the
specific MP252's configuration for creating a configuration file for remote configuration
update, and for debugging and diagnostics. When creating a configuration backup,
disable the two display check boxes (i.e. save a full configuration file in the hierarchic
conf format). This file can be loaded back to the same MP252, using the procedure
described in Section 18.4.1 on page 318.
Note: The file is generated according to the selected display option (in Step 2).
4.
To restore your configuration from a file saved on your PC, click Upload Configuration
File.
Note: Do not load this file to a different MP252 as it includes the MAC address, which
is unique to MP252 from where it was saved.
When creating a file for remote configuration update, it is recommended to only select the
'Display modified configuration fields only'. This ensures that the file includes only
parameters that were modified from their default value. You can choose the conf format or
the flat ini-file format. In both cases, it is recommended to review the file and ensure that only
the parameters that the user has intended to modify appear. This file can be placed on an
FTP or HTTP server for mass configuration update, as described in Remote Configuration
Download.
Note: When rebooting, MP252 restores the settings from its configuration file.
However, if reboot attempts fail three times consecutively, MP252 resets the
configuration file by restoring factory defaults before attempting to reboot.
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18.4.1 Uploading from PC on the Network
The procedure below describes how to upload a configuration file from a PC on the network
to MP252.
 To upload a configuration file to MP252 from a PC on the network:
1.
Click the Upload Configuration File; the screen 'Upload Configuration File' opens.
Figure 18-8: Upload Configuration File
2.
Under the 'Load the Configuration File From a PC on the Network' group, click Upgrade
Now; the screen 'Upload Configuration File' opens.
Figure 18-9: Loading Configuration File from a PC on the Network
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3.
Enter the path of the configuration file or click Browse and navigate to the configuration
file on your PC.
4.
Click OK; the file starts loading from the PC to your MP252. When loading is complete,
the screen 'Successful Configuration File Loading' opens, prompting you to confirm
configuration file load.
Figure 18-10: Successful Configuration File Uploading
5.
Click OK to confirm; the upgrade process commences and takes a couple of minutes to
complete. At the conclusion of the file load process, the MP252 automatically reboots.
When the MP252 completes the reboot, the new configuration file is applied and the
‘Login’ screen appears, prompting you to login again.
6.
Login with your username and password.
Note: During the load process, it is recommended not to power down MP252 nor stop
the file load process to avoid damage to the main firmware. However, if you do,
MP252 runs a recovery firmware image (also stored on its flash memory).
Except for the analog or VoIP interfaces, the recovery image supports all
interfaces and enables MP252 to reconnect to the Internet and then download
the primary software.
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18.4.2 Uploading from a Remote Server
The procedure below describes how to upload a configuration file to MP252 from a remote
server. This allows you to keep your configuration up-to-date, by performing daily checks for
a newer configuration file each time MP252 restarts (i.e., automatic update), or manually
checking for a newer configuration file.
 To upload MP252's configuration file from a remote server:
1.
Click the Upload Configuration File; the screen 'Upload Configuration File' opens.
Figure 18-11: Upload Configuration File
2.
3.
Under the 'Load the Configuration File From Remote Server' group, select the checking
method and interval:
•
Automatically check for new configuration file
•
Automatic configuration file check disabled
In the 'Remote Configuration File URL' field, enter the URL address of the remote server
where the configuration file is located. The URL format is as follows:
protocol://server/filename., for example:
•
ftp://10.10.10.10/MP20x_.conf
•
http://20.20.20.20/MP20x_.ini
Where  is the MAC address of MP252's WAN.
4.
In the 'Check every' field, enter the interval (in hours) for which MP252 periodically
checks for a new configuration file. If set to 0, MP252 checks only once for a new
configuration file, and this occurs after it restarts.
5.
From the ‘SSL Mode’ drop-down list, select the type of Secure Socket Layer (SSL)
certificate's validation method for accessing the remote server using HTTPS for the
following purposes: downloading a new firmware file, downloading a new configuration
file, and TR-069. Upon connection, MP252 validates the server's certificate using the
selected method:
•
None: Do not validate the server's certificate (if you do not have a certificate).
•
Chain: Validate the entire certificate chain (if you have a certificate, but not
necessarily signed by a root CA).
•
Direct: Ensure that the server's certificate is signed by the root certificate (CA).
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6.
Click OK; the download process begins. When downloading completes, a confirmation
screen appears, prompting you to confirm loading the new version.
7.
Click OK to confirm. The upgrade process begins and takes about one minute to
complete. At the conclusion of the upgrade process, MP252 automatically reboots and
the new software version runs.
If a new version is unavailable, click the Check Now button to perform an immediate
check (instead of waiting for the next scheduled one). The screen displays a green
"Check in progress..." message.
Notes:
• For additional security, MP252 can be configured to use HTTPS client-server
certification when connecting to a remote server (see Section 13.3 on page 200).
• The configuration file can have one of the following two formats: a hierarchical
conf file (indicated by file extension *.conf) or a flat ini file (indicated by file
extension .ini).
• The parameter ‘/rmt_config/version’ defines the version of the configuration file.
MP252 uses the new configuration file only if the version that is defined in this file
is later than the current version. By default, the ‘version’ is set to 0. This means
that each time Service Providers’ operations personnel require MP252 to
download a new configuration file, they need to increment the ‘version’ parameter
in the new file (in the .conf file, the ‘version’ parameter is under the section
‘rmt_config’). To simplify the procedure, it is possible to use the current date in
YYYYMMDD format as the version field.
• The remote configuration file must include only a subset of the complete
MP20x.conf file. A recommended procedure is to start with a MP252 restored to
its factory settings, modify using the embedded Web server the parameters that
should appear in the remote configuration file, and then upload (save) the
configuration file. You must save only the modified parameters, as described in
'Remote Administration' on page 261.
• The string  enables the ISP to pre-configure all its deployed MP252s with
the same URL and file details (under rmt_config/url) and still have each MP252
download its unique configuration file. Once the URL is configured with the string
, MP252 that is trying to update its configuration file automatically
replaces  with its own unique MAC address. For example, if there’s a
MP252 with a WAN MAC address 00:01:02:03:04:05, the ISP can configure the
url to http://myserver.com/my_conf_file_.conf - and place a file called
‘my_conf_file_00_01_02_03_04_05.conf’ on the server.
• Downloading a configuration file from a remote server can also be performed
from the CLI:
1) Using Telnet, access MP252, and then enter the user name and password.
2) Enter the command rmt_config, for example:
rmt_config –u http://myserver.com/my_conf_file.conf
3) Enter rmt_config without any arguments for more help information.
18.4.3 Encrypting a Configuration File Using CLI
Encrypted files include the file name extension *.cfx (instead of *.cfg) or *.inx (instead of *.ini).
After MP252 loads the encrypted file from the HTTP server, it automatically identifies the
encrypted file by its file name extensions *.cfx or *.inx, and subsequently decrypts the file
before saving it to flash memory.
The following procedure describes how to encrypt configuration files.
 To encrypt a configuration file:
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Run the following CLI shell command (on Linux or Windows PC with OpenSSL
installed):
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openssl des3 -in  -out  -k
 -S 
Where,
•
 is the original clear-text configuration file (*.cfg or *.ini file).
•
 is the output file (an encrypted *.cfx or *.inx file).
•
 is the password that is used to encrypt the file.
 is the 8 bytes of a special key value that is combined with the
password. The format is 16 hexadecimal digits [0-9,A-F].
An example of this command is shown below:
openssl des3 -in c:\temp\try_enc_conf.cfg -out
c:\temp\try_enc_conf.cfx -k MyPassword123456 -S 0123456789ABCDEF
•
Notes:
•
You can choose any  – MP252 does not have to know about it.
•
A password can be pre-configured in MP252, using the following CLI
command: rg_conf_set_obscure /rmt_config/password

•
You can also define the password in a configuration file that you download
from the server.
•
If you don’t define a password in the configuration file, a default password is
used. Different default passwords are defined per customer, according to
the config-file url hostname.
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18.4.4 Automatic Upload using SIP NOTIFY Message
You can enable automatic configuration update for MP252 from a remote server, using the
SIP NOTIFY message. The contents of the configuration file can initiate (“push”) the remote
server to update MP252 to a desired configuration version.
 To “push” a configuration file when a change of parameter is needed:
1.
Create a new configuration file with the required change.
2.
Place the file on the HTTP server.
3.
Send the SIP NOTIFY message to MP252; MP252 integrates the contents of the new
file and reboots.
 To “push” a configuration file and initiate an upgrade or downgrade:
1.
Create a new configuration file that includes two important entries:
a.
b.
In rg_conf/rmt_upd/chech_sync_version, configure the details of the version to
which you want MP252 to upgrade or downgrade, for example:
(rmt_upd
(check_sync_version(2.6.0_build_1))
You may need to update the URL address from where MP252 is downloading the
firmware (the path is configured in rmt_upd/url).
Note: In the case of a downgrade, the service provider MUST provide a configuration
file based on a template that matches the version to which the MP252 is
downgrading.
18.5
2.
Place the file on the HTTP server.
3.
Send the SIP NOTIFY message to MP252; MP252 integrates the contents of the new
file and reboots. After rebooting, MP252 compares the currently running version with
the version which is configured in rmt_upd/chech_sync_version and then determines
whether to connect to the rmt_upd/url for downloading the new *.rmt file. Once the file is
downloaded, its headers are parsed, and only if it represents the same version which
was configured in the value of rmt_upd/chech_sync_version, does the
upgrade/downgrade process begin.
Firmware Upgrade
MP252 provides a built-in mechanism for upgrading its software image. There are two
methods for upgrading the software image:
Upgrading from a Computer on the Network: This method uses a software image file
that is pre-downloaded on a PC's disk drive or located on an accompanying CD. (See
Section 18.5.1 on page 325.)
Upgrading from the Internet: This method also referred to as 'Remote Update',
upgrades your firmware by remotely downloading an updated software image file. (See
Section 18.5.2 on page 326.)
MP252 provides a flash memory of 8 MB, which is capable of storing two firmware images. In
addition to the primary firmware, MP252 also stores a recovery firmware, which is used only
if the primary image is missing or damaged (e.g. if the user unplugs the power during
firmware upgrade). Except for the analog or VoIP interfaces, the recovery image supports all
interfaces and enables MP252 to reconnect to the Internet and download the primary
firmware.
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18.5.1 Upgrading from a Computer on the Network
The procedure below describes how to upgrade MP252 from a software image file located on
a local computer or network.
Note: You can only use files with an *.rmt extension when performing the firmware
upgrade procedure.
 To upgrade MP252 software image using a locally available .rmt file:
1.
In the 'Advanced' screen, click the Firmware Upgrade
Upgrade' screen appears.
icon; the ‘MP252 Firmware
Figure 18-12: MP252 Firmware Upgrade Screen
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2.
Under the Upgrade From a Computer in the Network group, click the Upgrade Now
button; the 'Upgrade From a Computer in the Network' screen appears.
Figure 18-13: Upgrade From a Computer in the Network Screen
3.
In the 'Firmware Upgrade File' field, enter the path to the software image file or click
Browse and navigate to the rmt file on your PC.
4.
Click OK; the MP252 uploads the file from your PC. When loading is complete, you are
prompted to confirm upgrade to the new version.
Figure 18-14: Confirming Firmware Upgrade Screen
5.
Click OK to confirm; the upgrade process commences (a few minutes).
Figure 18-15: Upgrading in Progress Screen
At the conclusion of the upgrade process, MP252 automatically reboots and the new
software version now runs on MP252, maintaining your configurations and settings.
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18.5.2 Upgrading From the Internet
The Remote Update mechanism helps you keep your software image up-to-date, by
performing routine daily checks for newer software versions, as well as letting you perform
manual checks. These updates are from a user-defined URL.
 To upgrade MP252's software image from the Internet:
1.
In the 'Advanced' screen, click the Firmware Upgrade icon; the ‘MP252 Firmware
Upgrade' screen appears.
Figure 18-16: Advanced - Firmware and Configuration Upgrade
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2.
Under the Upgrade From the Internet group, select the utility's checking method and
interval:
•
Automatically Check for New Versions and Upgrade MP252: MP252
automatically checks for new versions every user-defined interval (defined in the
'Check every' field) at the URL address defined in the 'URL' field. You can define
the time (in minutes) after which the first check commences after MP252 is reset.
•
Automatically Check for New Versions and Notify via Email:
Automatic Check Disable: MP252 checks for a new version at the URL address
defined in the 'URL' field, when you click the Check Now button.
The result of the last performed check is displayed between the Check Now and Force
Upgrade buttons, indicating whether a new version is available or not.
•
3.
If a new version is available:
a.
b.
4.
Click the Force Upgrade button. A download process begins. When downloading
is complete, you are prompted to confirm upgrade to the new version.
Click OK to confirm. The upgrade process begins and takes about one minute to
complete. At the conclusion of the upgrade process, MP252 automatically reboots
with the new software version.
If a new version is unavailable:
a.
b.
Click the Check Now button to perform an immediate check (instead of waiting for
the next scheduled one). The screen displays the "Check in progress" message.
Click the Refresh button until the check is complete and the result is displayed.
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System Settings
The 'System Settings' screen allows you to configure various MP252 system and
management parameters.
 To configure MP252 system and management settings:
1.
In the 'Advanced' screen, click the System Settings
screen appears.
icon; the 'System Settings'
Figure 18-17: System Settings Screen (Only Partial View due to Screen Size)
Note: Due to the size of the ‘System Settings’ screen, the figure above provides only
a partial display.
2.
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Under the System Settings group, configure the following:
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3.
4.
5.
6.
7.
•
In the ‘MP252’s Hostname' field, enter the MP252's host name. The host name is
the MP252's URL address.
•
In the 'Local Domain' field, enter your network's local domain.
Under the MP252 group, do the following:
•
Automatic Refresh of System Monitoring Web Pages: select this check box to
enable automatic refreshing of system monitoring Web interface pages.
•
Warn User Before Network Configuration Changes: select this check box to
activate user warnings before network configuration changes take effect.
•
Session Lifetime: duration of idle time (in seconds) in which the Web session
remains active. When this duration times out, you must re-login.
•
User Interface Theme: enter an alternative GUI theme name.
•
Language: select a language for the Web interface GUI.
Under the Management Application Ports group, define the following ports:
•
Primary/secondary HTTP management ports
•
Primary/secondary management HTTPS ports
•
Primary/secondary Telnet ports
•
Secure Telnet over SSL ports
Under the Management Application SSL Authentication Options group, configure
whether the following is required:
•
Primary/Secondary HTTPS Management Client Authentication
•
Secure Telnet over SSL Client Authentication
Under the System Logging group, do the following:
•
System Log Buffer Size: size of the system log buffer in kilobytes.
•
Remote System Notify Level: MP252 sends notifications to a remote host (None,
Error, Warning, Information)
•
Persistent System Log: saves the system log to MP252 flash memory. This
prevents the system log from being erased when MP252 reboots.
Under the Security Logging group, do the following:
•
Security Log Buffer Size: size of the security log buffer in Kilobytes
•
Remote Security Notify Level: None, Error, Warning, Information
•
Persistent Security Log: saves the security log to the flash. This prevents the
security log from being erased when MP252 reboots.
Note: Do not leave the persistent logging feature enabled permanently, as continuous
writing of the log files to the flash memory reduces MP252's performance.
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Under the Outgoing Mail Server group, do the following:
•
Server: hostname of your outgoing (SMTP) server.
•
From Email Address: Each email requires a 'from' address and some outgoing
servers refuse to forward mail without a valid 'from' address for anti-spam reasons.
•
Port: port used by your outgoing mail server.
Server Requires Authentication: If your outgoing mail server requires
authentication, select this check box and enter your user name and password in
the subsequent 'User Name' and 'Password' fields respectively.
To define email notifications per User to receive indications of system and security
events, see Section 4.4 on page 44.
•
9.
The Swap group configures the Swap feature that enables you to free a portion of the
RAM by creating a swap file on the storage device connected to MP252. This is
especially useful for platforms with a small RAM. To activate this feature:
a.
b.
c.
d.
Verify that a storage device is connected to MP252.
Select the 'Enabled' check box.
In the 'Swap Size' field, enter a swap file size in megabytes.
Click Apply; a swap file is created on the storage device and the read-only ‘Status’
field changes to “Ready”.
10. Under the Host Information group, select the ‘Enable Auto Detection of Host Services’
check box to enable MP252 to auto-detect its LAN hosts' properties, available services,
traffic statistics, and connections.
11. Under the Installation Wizard group, select the ‘Use Installation Wizard Pre-configured
Values’ check box to have the wizard skip the steps for which parameters had been
preconfigured and saved in the factory settings file (rg_factory).
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18.7
Reboot
The procedure below describes how to reboot MP252.
 To reboot MP252:
1.
In the 'Advanced' screen, click the Reboot
icon; the 'Reboot' screen appears.
Figure 18-18: Reboot Screen
2.
Click OK to reboot MP252. This may take up to one minute.
3.
To re-enter the Web interface after rebooting MP252, refresh your Internet browser.
You can also reboot MP252 using a manual procedure, as described below:
 To manually reboot MP252:
Insert a paper clip (or any other similar pointed object) into the Reset pin-hole button
located on the rear panel of MP252, and keep the button pressed for at least 1 second
(but no more than 5 seconds); the MP252 reboots.
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Restoring Factory Settings
You can restore MP252 to factory default settings. This is useful when, for example, you are
initially creating a new network or when you cannot recall changes made to the network.
Notes:
•
If you are accessing MP252's Web interface from the WAN, restoring
factory default settings causes the connection with MP252 to be lost, since
access to the Web interface from the WAN is blocked by default.
•
All Web-based management settings and parameters are restored to their
default values. This includes the administrator username and password
 To restore MP252 to default settings:
1.
In the 'Advanced' screen, click the Restore Factory Settings
Factory Settings' screen appears.
icon; the 'Restore
Figure 18-19: Restore Factory Settings Screen
2.
Click OK to restore MP252's factory default settings.
If the MP252 Web interface cannot be accessed (for example, if the password is unknown or
if the LAN is disabled), you can restore default settings manually, as described below:
 To manually restore MP252 to default settings:
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Insert a paper clip (or any other similar pointed object) into the Reset pin-hole button
located on the rear panel of MP252, and keep the button pressed for at least seven
seconds. While MP252 sets all its parameters to default, the Status, Broadband, and
Phone LEDs blink red. After this, the Status LED is lit steady red while MP252 reboots.
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19
Diagnostics and Performance Monitoring
The System Monitoring menu displays important system information and includes the
following main tab screens:
19.1
Network Connections – see Section 19.2 on page 339
System Log – see Section 19.2.2 on page 340
CPU – see Section 19.2.3 on page 340
VoIP – see Section 19.2.4 on page 343
Internet Connection Utilization - see Section 19.2.5 on page 343
Diagnostics
The Diagnostics
icon allows you to test network connectivity. In addition, it allows you to
view statistics such as the number of packets transmitted and received, round-trip time, and
success status. The test tools are platform-dependent and are not available simultaneously.
The Diagnostics
icon displays the ‘Diagnostics’ screen, as described below.
 To access the 'Diagnostics' screen:
In the 'Advanced' screen, click the
icon.
Figure 19-1: Diagnostics Screen
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19.1.1 Running a Ping Test
The procedure below describes how to run a ping (ICMP) test in the ‘Diagnostics’ screen.
This test is done under the Ping (ICMP Echo) group.
 To run a ping test:
1.
In the 'Destination' field, enter the IP address or URL to be tested.
2.
In the 'Number of pings' field, enter the number of pings you want to perform.
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3.
Click Go; after a few seconds, diagnostic statistics are displayed. If no new information
is displayed, click the Refresh button.
Figure 19-2: Running a Ping Test
19.1.2 Running an ARP Test
The ARP test is used to query the physical address (i.e., MAC) of a host.
The procedure below describes how to run an Address Resolution Protocol (ARP) test in the
‘Diagnostics’ screen. This test is done under the ARP group.
 To run an ARP test:
1.
in the 'Destination' field, enter the IP address of the target host.
2.
Click Go; after a few moments, diagnostic statistics is displayed. If no new information is
displayed, click Refresh.
Figure 19-3: Running an ARP Test
19.1.3 Running a Traceroute
The procedure below describes how to run a traceroute test in the ‘Diagnostics’ screen. This
test is done under the Traceroute group.
 To run a traceroute:
1.
In the 'Destination' field, enter the IP address or URL to be tested.
2.
Click Go; a traceroute commences, constantly refreshing the screen.
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Figure 19-4: Running a Traceroute
3.
To stop the trace and view the results, click Cancel.
19.1.4 Running a PVC Scan Test
The procedure below describes how to run a Permanent Virtual Circuit (PVC) scan in the
‘Diagnostics’ screen.
 To run a PVC scan:
Under the PVC Scan group, click Go; in a few moments, diagnostic statistics is
displayed. If no new information is displayed, click Refresh.
Figure 19-5: Running a PVC Scan
19.1.5 Running an OAM Ping Test
The Operation and Maintenance (OAM) ping test checks the status of a Virtual Channel (VC)
of the Asynchronous Transfer Mode (ATM) connection to the remote Network Access
Concentrator (NAC). Each of the ATM's virtual channels has an address that consists of a
Virtual Path Indicator (VPI) and Virtual Channel Indicator (VCI). The OAM ping test sends a
request, either a VP loopback (F4) or a VC loopback (F5), and receives a reply from the NAC
at the other end of the ATM connection.
The procedure below describes how to run an OAM Ping test in the ‘Diagnostics’ screen.
This test is done under the OAM Ping group.
 To run an OAM ping test:
1.
From the ‘Type’ drop-down list, select the type of OAM ping to run:
•
F4 End-to-End
•
F4 Segment
•
F5 End-to-End
•
F5 Segment
2.
In the 'VPI' field, enter the channel's VPI value.
3.
In the ‘VCI’ field, enter the channel's VCI value. This is applicable only if you are
checking the VC loopback (F5).
4.
In the 'Count' field, enter a number of the ping packets sent to the destination address.
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5.
Click Go; in a few moments, diagnostic statistics is displayed. If no new information is
displayed, click Refresh.
Figure 19-6: Running an OAM Ping Test
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19. Diagnostics and Performance Monitoring
Performance Monitoring
This section describes how to view the MP252 performance status.
19.2.1 Network Connections
MP252 constantly monitors traffic within the local network and between the local network and
the Internet. You can view up-to-the-second statistical information about data received from
and transmitted to the Internet (WAN) and about data received from and transmitted to
computers in the local network (LAN).
 To view network connections:
1.
From the menu bar, click the System Monitoring menu.
2.
Select the Network Connections tab.
Figure 19-7: Network Connections Screen
Click the Refresh button to update the display or click the Automatic Refresh On button to
automatically refresh the displayed parameters. To reset the counters, click the Reset
Statistics button.
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19.2.2 System Log
The ‘System Log’ screen displays a list of the most recent activity that has occurred on
MP252.
 To view the system log:
1.
From the menu bar, click the System Monitoring menu.
2.
Select the System Log tab.
Figure 19-8: System Log Screen
To update the display, click the Refresh button. To clear the list of logged events, click the
Clear Log button. To save the logged events to a file (comma-separated values file) on your
PC, click the Download Log button.
19.2.3 CPU
The 'CPU' screen displays the following system parameters:
Gateway ID:
System Has Been Up For: Time that has passed since MP252 was last started.
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19. Diagnostics and Performance Monitoring
Load Average: Average number of processes that are either in a runnable or
uninterruptible state. A process in the runnable state is either using the CPU or waiting
to use the CPU. A process in the uninterruptible state is waiting for I/O access, e.g.
waiting for the disk. The averages are taken over the three time intervals. The meaning
of the load average value varies according to the number of CPUs in the system. This
means for example, that a load average of 1 on a single-CPU system means that the
CPU was loaded all the time, while on a 4-CPU system this means that the CPU was
idle 75% of the time.
Processes: Processes currently running on MP252 and their virtual memory usage.
The amount of memory granted for each process is displayed as follows:
Version 3.4.0
•
Total Virtual Memory (VmData): Amount of memory currently utilized by the
running process.
•
Heap size (VmSize): Total amount of memory allocated for the running process.
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 To view the CPU statistics:
1.
From the menu bar, click the System Monitoring menu.
2.
Select the CPU tab.
Figure 19-9: CPU Screen
By default, the screen is automatically refreshed. To disable automatic refresh, click
Automatic Refresh Off, and then click the Refresh button each time you want to update the
display.
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19. Diagnostics and Performance Monitoring
19.2.4 Voice over IP
The ‘VoIP’ screen displays information on VoIP traffic and settings.
 To monitor VoIP traffic:
1.
From the menu bar, click the System Monitoring menu.
2.
Select the VoIP tab.
Figure 19-10: VoIP Screen
By default, the screen is automatically refreshed. To disable automatic refresh, click
Automatic Refresh Off, and then click the Refresh button each time you want to update the
display.
19.2.5 Internet Connection Utilization
The ‘Internet Connection Utilization’ screen displays the Internet connection bandwidth
usage information per computer and application.
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 To monitor Internet connection usage:
1.
From the menu bar, click the System Monitoring menu.
2.
Select the Internet Connection Utilization tab. By default, the By Computer tab is
selected.
Figure 19-11: Internet Connection Utilization – By Computer Screen
3.
To view bandwidth utilization per application, click the By Application tab.
Figure 19-12: Internet Connection Utilization – By Application Screen
By default, the screen is automatically refreshed. To disable automatic refresh, click
Automatic Refresh Off, and then click the Refresh button each time you want to update the
display.
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DECT Phone
Part II describes the installation and configuration of the MP252 DECT phone, and includes
the following chapters:
Introduction
Safety Instructions
Getting Started
General Phone Operation
Phonebook
Call List
Clock and Alarm
Customizing the Handset
Base Settings
Factory Defaults
Troubleshooting
Note: This part is applicable only to MP252WDNB.
Reader’s Notes
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20. Introduction
Introduction
Part I provides you with step-by-step instructions on how to use your AudioCodes MP252
cordless Digital Enhanced Cordless Telecommunications (DECT) VoIP telephone.
AudioCodes DECT phone offers the following main features:
DECT technology providing high-definition voice quality, security and range
Interference free for crystal clear conversations—no interference with other wireless
networks and other electronic devices
Up to 5 handsets can be registered to the MP252 base station
Call hold
Call transfer
Auto-answer
Call muting
Silent ring mode
Stores dialed, received and missed calls
Last number redial
Hands-free conversations using handset speakerphone
Phone book directory of up to 150 contacts—easy to store and dial
Three-way conference calls between outside call and between handsets
Intercom between handsets
Configurable LCD screen properties–contrast level and background wallpaper
Handset volume control
Built-in alarm clock with snooze
Multi-language support for displaying the LCD screen
Page/handset locator
Selectable ring tones
Keypad lock capability to prevent accidental pressing of keys
Wall-mount bracket included
Comfortable handset size
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Reader’s Notes
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Safety Instructions
Before using your DECT phone, read the following safety instructions:
1.
Read and understand all the instructions.
2.
Follow all warnings and instructions marked on the product.
3.
Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or
aerosol cleaners. Use a damp cloth for cleaning.
4.
Do not use this product near water (for example, near a bath tub, kitchen sink,
swimming pool).
5.
Do not overload wall outlets and extension cords as this can result in the risk of fire or
electric shock.
6.
Unplug this product from the wall outlet and refer servicing to AudioCodes under the
following conditions:
•
When the power supply cord or plug is damaged or frayed.
•
If the product does not operate normally by following the operating instructions.
•
If the product has been dropped and the cabinet has been damaged.
•
If the product exhibits a distinct change in performance.
7.
Avoid using a telephone (other than a cordless type) during an electrical storm. There
may be a remote risk of electric shock from lightning.
8.
Do not use the telephone to report a gas leak in the vicinity of the leak.
9.
Use only the supplied nickel-metal hydride cell (NiMH) rechargeable batteries! The
operation periods for the handsets are only applicable with the default battery
capacities.
10. Use only the supplied 12VDC +/-10%, tolerance, 2A, limited power source wall mount
Class II power supply adapter. Before connecting MP252 to power, ensure that the VAC
ratings match.
11. The use of other battery types or non-rechargeable batteries/primary cells can be
dangerous. These may cause interference and/or unit damages. The manufacturer will
not be held liable for damage arising from such non-compliance.
12. Do not use third-party charging bays. The batteries may be damaged.
13. Please note the correct polarity while inserting the batteries.
14. Do not immerse batteries in water, do not place in fire.
Caution
RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT
TYPE.
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Reader’s Notes
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Getting Started
22.1
Installing the DECT Phone
The procedure below describes how to install the DECT phone on the MP252 unit.
 To install the DECT phone:
1.
The handset is shipped with rechargeable batteries already installed in the battery
compartment. However, a plastic sheath separates the batteries from the handset’s
electrical circuit. Before you can charge the handset, you need to remove this plastic
sheath. On the handset, pull out the plastic tab jutting out from the battery compartment.
This closes the battery circuit and provides power to the handset.
Figure 22-1: Plastic Tab jutting out from Battery Compartment
2.
On the lower part of the MP252 front panel, remove the cover protecting the connector
for the handset cradle.
3.
Attach the handset cradle to the unit by inserting it into the exposed groove and then
pushing it up so that it clicks on to the connector. Attach the removed cover to the front
of the cradle.
Figure 22-2: Attaching Handset Cradle to MP252 Base Unit
4.
Place the handset in the cradle and leave to charge for at least 16 hours prior to initial
use.
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22. Getting Started
Powering the Handset
22.2.1 Charging the Handset
Once you have installed the batteries, you need to charge them before initial operation.
Note: Charge the batteries for at least 16 hours before initial use.
 To charge the handset:
1.
Ensure that the MP252 is connected to power.
2.
Place the handset in the charging cradle of the base unit so that the bottom of the phone
sits in the base cradle. When correctly inserted in the cradle, the phone begins charging,
indicated by the display of the charging levels of the battery icon in the phone's
screen. For checking battery level, see Section 22.2.2 on page 354.
Figure 22-3: Handset Charging in Cradle
Handset Cradle
Notes:
Version 3.4.0
•
During a call, if your handset batteries are low, your handset will play a
warning tone. Replace the handset on the base to recharge them.
•
Your phone can sound an alert tone when the battery is low. To activate this
alert, see Section 27.3.2 on page 392.
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22.2.2 Checking the Battery Level
The battery icon located in the main screen, displays the current battery level, as shown
below:
Handset battery is fully charged.
Handset battery is two-thirds charged.
Handset battery is one-third charged.
Handset battery is empty and needs charging. This icon flashes.
Your handset may power down if it is not charged after the battery is empty. If you are in a
call and the battery is low, an alert tone is sounded. You can enable or disable this alert tone
feature (see Section 27.3.2 on page 392).
22.2.3 Switching the Base Unit On or Off
To operate your phone, the base station must be on. You can turn the base station on or off
as described in the procedure below:
 To switch the base on or off:
On the MP252, press the DECT LED button. When the base station is switched off, the
DECT LED is lit red. When switched on, the LED is green or another color depending on
the state of the phone. For a description of the DECT LED, see Section 22.3.3 on page
363.
22.2.4 Switching the Handset On or Off
When you place the handset in the base unit to charge, the handset automatically turns on.
You can turn the handset on or off, as described in the procedure below:
 To switch the handset on or off:
On the handset, continually press the
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22.2.5 Replacing the Batteries
The handset is shipped with rechargeable batteries. However, if you need to replace them,
follow the procedure described in this section.
Warnings:
•
Risk of explosion if battery is replaced by an incorrect battery type; use
only the nickel-metal hydride cell (NiMH) rechargeable batteries as
provided with your phone (for battery specifications, see Section A on
page 403). The manufacturer will not be held liable for damage arising
from such non-compliance.
•
Verify correct polarity of the batteries when inserting the batteries.
Incorrect polarity may damage the product.
•
The operation periods (as stated in Section A on page 403) for the
handset are only applicable with the default battery capacities.
•
Do not use third-party charging bays to charge the batteries.
•
•
Do not immerse batteries in water and do not place in fire.
Do not mix old and new batteries.
•
Do not open or mutilate the batteries. Released electrolyte from the
batteries is corrosive and may cause burns or injury to the eyes or skin.
The electrolyte is toxic and may be harmful if swallowed.
•
Do not allow conductive materials such as rings, bracelets, or keys to
touch the batteries, otherwise a short circuit may cause the batteries
and/or the conductive material to overheat and cause burns.
•
Avoid touching the battery ends (+, -) or the base unit contacts.
 To install the handset batteries:
1.
Remove the battery compartment cover, by sliding the cover out from the base of the
phone toward the top end (in the direction of the arrow label printed on the cover). You
can use your thumb to push at the base of the cover.
2.
Remove the old batteries (if any) and then place the two batteries (supplied) into the
battery compartment, as indicated.
3.
Slide the battery compartment cover back into place.
Figure 22-4: Installing Batteries
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22.3
Getting to Know Your Phone
22.3.1 Overview of the Handset
The areas of the handset are shown in the figure below and described in the subsequent
table.
Figure 22-5: Areas of the Handset
10
11
12
13
14
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Table 22-1: Handset Description
Item
Label
Description
Earpiece
Display
Up Arrow / Redial List
 In idle mode: Press to access the redial list.
 In menu mode: Press to scroll up the menu items
 In Phonebook list / Redial list / Call List: Press to scroll up the list
 During a call: Press to increase the volume
Left Softkey
 In idle mode: Press to access the main menu
 In submenu mode: Press to confirm selection
 During a call: Press to access the submenu
Left Arrow
 In idle mode: Press to list the registered handsets.
 In editing/pre-dialing mode: Press to move the cursor one character to
the left.
 During a second call: press and hold to conference your calls.
Talk On
 In idle / pre-dialing mode : Press to make a call
 In Redial list / Call List/ Phonebook entry: Press to make a call to the
selected entry in the list
 During ringing: Press to answer a call
Alphanumeric Keypad, * (Star), # (Hash)
Press to insert a digit / character / * / #
• * key in idle mode: Long press to turn on/off the ringer
• * key in editing mode: Long press to switch the character set
• * key during a call: Short press to switch to tone dialing mode temporarily
if using pulse dialing mode currently
• # key in editing mode: Long press to toggle between uppercase or
lowercase character input
• # key in Idle mode: Long press to turn on / off the keypad lock
• 0 key in pre-dialing / number editing mode: Long press to insert a pause
Bluetooth
Note: This button will be supported in the next applicable release.
Microphone
10
Right Softkey
 In idle mode: Press to access the phonebook
 In sub-menu mode: Press to go back to previous level
 In editing / pre-dialing mode: Press to clear a character / digit
 In editing / pre-dialing mode: Long press to delete all the characters / digit
 During a call: Press to hold / unhold the call.
11
Right Arrow
 In pre-dialing / editing mode: Press to move the cursor one character to
the right.
 During a second call: Press to toggle between calls.
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Item
Label
12
Description
Talk Off
During a call: Press to end a call and go back to idle screen
When there are two calls and the second is an outgoing call: Press to
transfer the first call to the user of the second call.
 In menu / editing mode: Press to go back to idle screen
 In Idle: Press and hold to power off the handset
 When the handset is power off: Press and hold to power on the handset
Down / Call List
 In idle mode: Press to access the call list
 In menu mode: Press to scroll down the menu items
 In Phonebook list / Redial list / Call List: Press to scroll the list
 During a call: Press to decrease the volume
13
14
Speakerphone
 During a call: Press to turn on / off the speakerphone.
 Call List / Phonebook entry: Press to make a call with speakerphone
 During ringing: Press to answer a call with speakerphone
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22.3.2 Getting to Know your Handset LCD Screen
The handset LCD provides various icons that are displayed according to the current status
and operational mode of the phone. An example of the phone’s LCD is shown below and the
icons are described in the table below.
Figure 22-6: Areas of the Handset LCD Screen
Table 22-2: Handset LCD Icon Descriptions
Icon
Description
Steady when the handset is in range of the base. Additional bars (red, orange, and
blue) are displayed as the signal strength increases.
Flashes when the handset is not registered to the base, in marginal range or out of
range of the base. When the handset is out of range, the LCD displays “Out of
Range” message.
The alarm is set. When the alarm time is reached, this icon flashes. This icon
disappears when the alarm is off.
Intercom is in progress.
Phone is ringing (i.e., incoming call).
Call is in progress.
Hands-free is in use.
Headset is in use.
Ringer is switched off.
keypad is locked.
Handset battery is fully charged.
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Icon
Description
Handset battery is one-third charged.
Handset battery is two-thirds charged.
Handset battery is empty and needs charging. This icon flashes.
22.3.2.1 Menu Structure
Your phone provides various features and functions that are grouped in the menus.
 To access the Menu list and its submenus:
1.
Press the Menu softkey.
2.
Use the 4-way navigation
3.
Press the Select softkey to access the required menu.
4.
To drill-down submenus, use the
navigation keys to select the required submenu and
then the Select softkey to access it.
keys to navigate to the required menu.
Table 22-3: Handset LCD Menus and Submenus
Menu Icon
Menu Name
Unselected
Submenus
Selected
Call List
(See Section 25 on 
page 381)
Call List
Missed Calls
Received Calls
Redial List
Clock/Alarm
(see Section 26 on 
page 385)
Date & Time
Alarm
Base Settings
(See Section 28 on 
page 395)
Manage HS
Line Settings
Modify PIN
BS Default
Product Version
Nemo Mode
View
Add
Edit
 Delete
 Delete All
Note: If the Phonebook is empty, then only the
Add submenu appears.
Phonebook
(See Section 24 on 
page 377)
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Menu Icon
Menu Name
Unselected
Submenus
Selected
HS Settings
(See Section 27 on 
page 389)
Registration
Audio Setup
Ring Setup
Tone Setup
Language
Wallpaper
Contrast
Auto Answer
Select Base
HS Default
Base 1
Base 2
Base 3
Base 4
The following menus or submenus can also be accessed using the
when the phone is in idle mode:
navigation keys
Table 22-4: Handset LCD Menus and Submenus Accessed using Navigation Keys
Pressed Key
Accessed Menu/Submenu
Description
Redial List
Navigate to the phone number that you want to redial,
and then press the
button. For detailed description
on redialing calls, see Section 23.1.5 on page 368.
Call List
Navigate to the phone number that you want to dial, and
then press the
button. For a detailed description
on dialing from the Call List, see Section 23.1.4 on page
368.
Intercom
This submenu allows you to make intercom calls
between handsets. Navigate to the handset that you
want to call. For a detailed description on making
intercom calls, see Section 23.11.1 on page 373.
22.3.2.2 Entering Text and Digits
Your phone allows you to enter strings consisting of letters, digits (numbers) and/or symbols.
These are required, for example, when defining the handset name and adding phonebook
contacts. In addition, your phone supports a variety of character sets including Latin, Russian,
Spanish, and Hebrew.
The character strings are entered using the phone's keypad keys.
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Figure 22-7: Handset Keypad
Each key allows you to enter numerous characters in addition to those printed on the keys
label. The number 1 key provides commonly used characters such as @ and #.
 To select a character:
Press the key consecutively until the required character is displayed.
 To toggle between upper and lowercase letters:
Press the # key until you hear a beep.
 To toggle between character sets (languages):
Press the star key (*) until you hear a beep.
In editing mode, a cursor is displayed to indicate the current text-entry position.
positioned at the right of the last character entered.
Writing tips:
It is
Once a character is selected, the cursor moves to the next position after a short pause.
You can move the cursor within the text by using the 4-way navigation
modify the text entry.
Press the Clear softkey to delete the last character.
Press and hold the Clear softkey to delete the entire text string..
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22.3.3 Viewing Base Unit Status with DECT LED
The DECT LED is located on the front panel of MP252 and indicates the operating status of
the cordless phone, as described in the table below:
Table 22-5: DECT LED Description
Color
State
Green
On
Green
Flashing
Red
On
Amber
Flashing
Red
Flash
Off
22.4
Description
Base unit is ready to make or receive calls with the handset.
Base is available for handset registration. To register a handset,
see Section 22.4 on page 363
The base unit is on, but no handset is registered to it.
Handset is being paged. To page (locate) the handset, see
Section 23.10 on page 372.
Malfunction in DECT cordless phone.
Phone is switched off. To switch the phone on or off, see Section
22.2.3 on page 354.
Upgrading MP252 and the Base Unit
If the software version currently running on MP252 is older than Version 3.3.0 build 17, you
need to upgrade your MP252 as well as your MP252 base unit.
Note: If you are a registered customer, you can download the latest MP252 software
file and base unit software file from AudioCodes Web site at
http://www.audiocodes.com/downloads.
These
files
include
V1MOD_SPI_app.bin and MP252_3_3_0_build_17_05_Jan_2011.rmt.
You can view the current software version running on MP252 by using the Web interface, as
follows:
1.
Access the MP252 Web interface.
2.
From the menu pane, select the Advanced menu, and then click the About MP252
icon; the 'About MP252' screen appears.
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Table 22-6: About MP252 Screen
Software
Version
 To upgrade the MP252 and base unit software versions:
1.
Upgrade the MP252 software version to 3.3.0_build_17. This is done in the Web
interface's 'Firmware Upgrade' screen (Advanced menu > Firmware Upgrade
icon). For a detailed description, refer to the MP252 User's Manual.
2.
Once upgraded, establish a telnet session with MP252, and then run the following CLI
command:
dect save_settings_in_factory
3.
Plug a USB flash drive containing the DECT base version file into the USB port, located
on the rear panel of MP252.
4.
Ensure that the DECT LED is lit.
5.
Run the following CLI command:
dect upgrade
The upgrade process begins and the DECT LED blinks (fast) green. Upgrade takes
approximately 8 minutes.
Note: During the upgrade process, do NOT power off MP252, remove the USB drive,
nor any other action on MP252.
6.
Once the base unit has completed its upgrade (indicated by the DECT LED being lit
steady green again), reboot MP252. This is done in the Web interface's 'Reboot' screen
(Advanced menu > Reboot
User's Manual.
22.5
icon). For a detailed description, refer to the MP252
Defining the MP252 Handset Line
Before you can operate the phone, the handset needs to be defined as one of the MP252
phone lines. By default, the handset is automatically assigned Line 3 of the MP252.
Configuration of this line is done using the MP252 Web interface, as described below.
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 To define the handset phone line on MP252:
1.
Access the MP252 Web interface.
2.
From the menu pane, select the Voice Over IP menu; the 'Voice Over IP' screen.
3.
Select the Line Settings tab; the 'Line Settings' screen appears.
Table 22-7: Line Settings Screen
4.
Click the Edit
icon corresponding to Line 3.
Table 22-8: Defining Line 3 Properties
5.
Version 3.4.0
Define the following line settings:
•
User ID: phone number (extension) of the MP252 handset
•
Display Name: String displayed to remote parties as your caller ID
•
Authentication User Name: User name (obtained from your service provider)
used when sending a response to Unauthorized or Proxy Authentication
Requested (401/407)
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•
22.6
Authentication Password: Password (obtained from your service provider) used
when sending a response to Unauthorized or Proxy Authentication Requested
(401/407)
Registering the Handset to Base Unit
Before you can use your handset, you need to register it to the base unit. Up to five handsets
can be registered to the base unit. If the handset is not registered to the base unit, the
following is displayed on its screen:
icon flashes
“Out of Range” message appears in idle state
 To register the handset to the base:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Registration
press the Select softkey.
3.
On the M-252 base unit, press the DECT LED button until (2 – 5 seconds) it starts
flashing green; the base unit enters registration mode. (The registration mode remains
active for 30 seconds, after which the DECT LED stops flashing. Therefore, proceed to
the next step before this interval expires.)
4.
Press the
navigation keys to choose the base unit (i.e., “Base 1”) to which you want
to register the handset, and then press the Select softkey; the registration process
begins and the “Registering - Waiting” is displayed.
5.
When the handset identifies the base, it displays its radio frequency (RF) identification
(each base has a unique RF ID). Click the Accept softkey to confirm (or press the Rej
softkey to cancel registration).
6.
On some handsets, you are prompted to enter a PIN code. The default PIN code is 0000
(see Section 28.2 on page 397 for defining the PIN code).
icon, and then
If the handset successfully registers to the base, a confirmation tone is heard and the icon
stops flashing. The handset is automatically allocated the next available handset number.
This handset number is displayed on the handset screen in idle mode. The base unit to which
the handset is successfully registered is marked with an asterisk “*” in the Registration
menu (see Section 27.8 on page 393).
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22. Getting Started
Checking the Handset Signal Strength
The antenna
icon displays the signal strength between your handset and the base unit:
Signal strength is excellent.
Signal strength is good.
Signal strength is poor.
When the icon is steady, the handset is in range of the base (but signal strength
is weak). When the icon flashes, it indicates that the handset is out of range and
there is no link with the base unit.
As the distance between the handset and the base increases, so the signal strength
decreases and vice versa.
Notes:
Version 3.4.0
•
The maximum range between the base station and the handset is
approximately 300 meters. Depending on the surrounding conditions as
well as spatial and structural factors, the range may be reduced. The range
indoors is normally less than outdoors.
•
If your handset has lost its link with the base unit, you cannot make or
receive calls. In addition, many other phone functions cannot be performed.
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General Phone Operation
23.1
Making an External Call
External calls are calls made to remote parties other than another registered headset (if any)
to the MP252 base.
Note: Your handset automatically displays the duration of every call. This is shown in
hours, minutes and seconds format (HH:MM:SS).
23.1.1 Pre-dialing
Preparatory dialing is when you first enter the phone number and only then dial it. This
therefore, allows you to make changes to the number before making the call.
1.
Enter the phone number; the number is displayed on the screen. You can make
changes to the number before dialing. Press the Clear softkey to delete digits to the left
of the cursor.
2.
Press
or
to dial the number.
23.1.2 Direct Dialing
Direct dialing is when you activate dialing and only then enter the phone number.
1.
Press
2.
Enter the phone number; the phone waits a few seconds and then dials the number.
or
to take the line.
23.1.3 Calling from your Phonebook
If you have added any contacts to your phonebook, you can dial from the phonebook.
1.
Press the PB softkey to access the phonebook.
2.
Press the
navigation keys to choose the desired phonebook entry, and then press
the Select softkey.
3.
Press
or
to dial the selected phonebook entry.
23.1.4 Calling from the Call List
You can dial numbers from previously received or missed calls, which are stored in the Call
List:
1.
Press the
navigation key to access the Call List.
2.
Press the
softkey.
navigation keys to select the desired entry, and then press the Select
3.
Press
or
to dial the selected entry.
23.1.5 Establishing a Second Call
While you are in an active call, you can establish a second call. When you establish a second
call, the first call is put on hold. You can toggle between the calls by placing one call on hold
while speaking to the other call (see Section 23.11.4 on page 374).
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23. General Phone Operation
To establish a second call, do one of the following:
Making a second call directly:
1.
2.
again.
Making a second call to a contact in your phonebook:
1.
2.
Press
; the Predialing screen appears.
Dial the desired number, and then press
Press the Menu softkey, and then choose Phonebook.
Select a number from the phonebook, and then press
Manually placing the first call on hold before making a second call:
1.
2.
Press the Hold softkey to place the current call on hold.
Establish a second call by doing one of the previously mentioned methods.
23.1.6 Redialing a Number
You can dial numbers that were previously dialed, which are stored in the Redial List.
23.2
1.
Press the
navigation key to access the Redial List.
2.
Press the
softkey.
navigation keys to select the desired number, and then press the Select
3.
Press
or
to dial the selected entry.
Answering a Call
When you receive a call, your phone rings and the following is displayed on your screen:
“Incoming Call”
Calling number is displayed
 To answer a call:
If the handset is not on the base: When the phone rings, press
If the handset is on the base and when Auto Answer is set to On: When the phone
rings, pick up the handset.
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23.3
Answering or Rejecting a Second Call
While you are talking on the phone, you can receive a second call. The phone provides the
following indications of a second incoming call:
A beep tone is sounded.
The “Call Waiting” message is displayed on the screen with the details (name and
number) of the calling party.
 To answer a second call:
Press
to answer the call; the call with the second call party is established and the
first call is put on hold.
 To reject a second call:
Press
to reject the second call.
Once you have answered the second call, you can toggle between the calls by placing one
call on hold and speaking to the other call (see Section 23.11.4 on page 374).
23.4
Ending a Call
To end call, you can do one of the following:
Press
Place the handset on the charger.
When you end the call, the screen displays “Released”.
23.5
Adjusting Earpiece and Speakerphone Volume
during a Call
During a call, you can adjust the volume of the handset earpiece and hands-free. There are
five volume levels provided on the handset. This is done during an ongoing call.
 To adjust the earpiece and hands-free volume:
During a call, press the up / down
navigation keys to increase or decrease the
volume level respectively. The screen displays the current volume setting.
Notes:
23.6
•
When you end the call, the selected volume applies to all future calls, until it
is modified again.
•
To adjust the earpiece and speaker volume when the phone is in idle state,
see Section 27.1 on page 389.
Muting a Call
You can talk to someone nearby without letting the caller hear you during a call. This is done
by muting the microphone of the handset.
 To mute and un-mute a call:
1.
To mute the call:
a.
During a call, press the Menu softkey.
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2.
23.7
23. General Phone Operation
Press the
navigation keys to select the Mute option, and then press the Select
softkey; the microphone is muted and “Call Muted” is displayed on the screen.
To un-mute the call:
a.
Press the Menu softkey.
b.
Press the
navigation keys to select the Unmute option, and then press the
Select softkey; the microphone is un-muted and you can now converse with the
caller.
Turning Off the Ringer
You can turn off the ringer of the handset for audibly notifying of incoming calls.
 To turn off and on the ringer:
23.8
1.
To turn off the ringer: In idle mode, press and hold
The icon is displayed on the screen.
2.
In silent mode, press and hold the
(asterisk) key to turn off the ringer.
key to turn on the ringer. The
icon disappears.
Redial List
The Redial List stores up to 100 of the last numbers that you have called. If the number that
you called also appears in the phonebook, then the contact name is displayed in the list,
instead of the number.
The Redial List allows you to do the following:
Redial a listed number (see Section 23.1.5)
Add a listed number to the phonebook
Delete a listed number
Delete all entries in the Redial List
Note: If there are no numbers in the Redial List, the screen displays “List Empty”.
23.8.1 Saving a Redial Number to the Phonebook
You can save a number listed in the Redial List to the phonebook.
 To save a listed number to the phonebook:
1.
Press the
navigation key to access the Redial List.
2.
Press the
softkey.
navigation keys to select the desired number, and then press the Select
3.
Press the Menu softkey.
4.
Press the
navigation keys to choose the Add to PB option, and then press the
Select softkey; the phonebook is accessed with the number already appearing in the
Number field.
5.
Enter the details (i.e., name) of the contact in the phonebook. For a detailed description
of adding contacts to the phonebook, see Section 24.1.
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23.8.2 Deleting a Number from the Redial List
You can delete a number from the Redial List.
 To delete an entry in the Redial List:
1.
Press the
navigation key to access the Redial List.
2.
Press the
softkey.
navigation keys to select the desired number, and then press the Select
3.
Press the Menu softkey.
4.
Press the
navigation keys to choose the Delete option, and then press the Select
softkey; the “Delete Confirm” message is displayed.
5.
Press the OK softkey to confirm deletion.
23.8.3 Deleting the Entire Redial List
You can delete all the entries in the Redial List.
 To delete all entries in the Redial List:
23.9
1.
Press the
2.
Press the Select softkey
3.
Press the Menu softkey.
4.
Press the
navigation keys to choose the Delete All option, and then press the Select
softkey; the “Delete Confirm” message is displayed.
5.
Press the OK softkey to confirm deletion.
navigation key to access the Redial List.
Locking the Keypad
You can lock the keypad to prevent accidental presses on the handset while carrying it
around. This can be done only when the handset is in idle mode.
 To lock the keypad:
1.
To lock the keypad: In idle mode, press and hold the # key; the
2.
To unlock the keypad: In idle mode, press and hold the # key, the
icon is displayed.
icon disappears.
Note: You are unable to make any calls when the keypad is locked.
23.10 Paging the Handset
You can locate the handset by paging the handset from the base.
 To page a handset:
On the base unit, press the DECT button until the LED changes to orange; all handsets
registered to the base ring up to 60 seconds and “Incoming Call – HS Locator” is
displayed on the LCD. You can stop the paging by pressing any key on the handset
except the Silent softkey.
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23. General Phone Operation
23.11 Call Handling for Multiple, Registered Handsets
The MP252 supports multiple, registered handsets. This section describes call handling
between multiple registered handsets. This includes how to make internal calls, transfer
external calls from one handset to another handset, and make conference calls.
23.11.1 Calling (Intercom) Another Handset
An intercom call is a call from one handset to another handset that is also registered to the
MP252 base unit.
Note: An intercom call can only involve two handsets that share the same base unit.
 To call (intercom) another handset:
1.
Press the
navigation key; the screen displays a list of the registered handsets.
2.
Press the
navigation keys to select the handset to which you want to make a call.
3.
Press the Select softkey; the called handset rings.
4.
On the called handset, press
to establish the internal call.
23.11.2 Transferring an External Call to Another Handset
You can transfer an external call (i.e., not a call from another handset) received on one
handset, to another handset.
23.11.2.1
Announced Call Transfer
An announced call transfer is when you can speak to the handset to where you want to
transfer the external call before transferring the call.
 To make an announced call transfer:
1.
During the call with the external call, press the
list of the registered handsets.
2.
Press the
3.
Press the Select softkey; the external call is automatically put on hold and the called
handset rings.
4.
On the called handset, press
handsets.
5.
On the calling handset, press the Menu softkey, and then choose the Transfer option;
the external call is transferred to the called handset and the current call with the calling
handset is terminated.
23.11.2.2
navigation key; the screen displays a
navigation keys to select the handset to where you want to transfer the call.
or
to establish an internal call between the
Unannounced Call Transfer
An unannounced call transfer is when you transfer the external call to a handset without
speaking to the handset to where the call is transferred.
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 To make an unannounced call transfer:
1.
During the call with the external call, press the
list of the registered handsets.
2.
Press the
3.
Press the Select softkey; the external call is automatically put on hold and the called
handset rings.
4.
On the calling handset, press the Menu softkey, and then choose the Transfer option;
the external call is transferred to the called handset and the current call with the calling
handset is terminated.
5.
On the called handset, press
navigation key; the screen displays a
navigation keys to select the handset to where you want to transfer the call.
or
to receive the transferred call.
23.11.3 Transferring an External Call to Another External Call
If you have two external calls, one an active call and the other a waiting call (or call on hold),
you can transfer the active call to the waiting call party.
 To transfer an external call to a remote party:
1.
Press the Menu softkey, and then select the Transfer option
2.
Press the OK softkey to confirm the transfer; the two external call parties are connected,
and you are disconnected from the calls.
23.11.4 Toggling between External and Internal Calls
If you have established an external call, you can establish another call (i.e., internal or
external) and then toggle between these calls. When one call is active, the other call is on
hold.
 To toggle between calls:
Press the navigation key; the currently active call is put on hold and the currently held
party is now active.
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23. General Phone Operation
23.11.5 Three-Way Conference Calls
You can create three-way conference calls composed of the following call party types:
Two handsets and an external party
Your handset and two external calls
23.11.5.1
Making a Three-Way Conference Call with Another Handset and an
External Party
The conference call feature allows one external call to be shared with two handsets (in
intercom). The three parties can share the conversation and no network subscription is
required.
 To make a three-way conference with another handset and an external
call:
1.
During the call with the external call, press the
list of the registered handsets.
2.
Press the
navigation keys to select the handset with which you want to establish a
three-way conference call.
3.
Press the Select softkey; the external call is automatically put on hold and the called
handset rings.
4.
On the called handset, press
5.
On the calling handset, press and hold the
the 3-way conference call.
or
navigation key; the screen displays a
to establish the internal call.
navigation key for 3 seconds to establish
Note: If any handset hangs up during the conference call, the other handset still
remains connected with the external call.
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23.11.5.2
Making a Three-Way Conference Call with your Handset and two
External Calls
You can make a three-way conference call between your handset and two external calls.
This can be done when you have two external calls, where you are talking with one and the
other call is waiting (on hold).
 To make a three-way conference with two external calls:
1.
Press the Menu softkey, and then choose the Conference option.
2.
Press the OK softkey to confirm the conference; the two external calls parties are
included in your conference call.
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24. Phonebook
Phonebook
Your handset can store up to 150 phonebook contacts. Each phonebook contact can have a
name of up to 12 characters long and a phone number of up to 24 digits.
24.1
Adding a New Contact
Follow the procedure below for adding a new contact to your phonebook.
 To add a new contact to a phonebook:
1.
In idle state, press the Menu softkey.
2.
Press the
3.
Press the Select softkey to access the Phonebook.
4.
Press the
softkey.
5.
Enter the contact details, using the
next:
navigation keys to scroll to the Phonebook
icon.
navigation keys to choose the Add option, and then press the Select
•
F. Name: first name
•
Name: family name
•
Number: phone number
navigation keys to move from one field to the
Note: The name and phone number are mandatory fields.
6.
Press the OK softkey to save the phonebook entry.
Note: The phonebook displays the contacts in alphabetical order.
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24.2
Editing a Contact
You can edit contacts listed in your phonebook.
 To edit a phonebook contact:
24.3
1.
In idle state, press the Menu softkey.
2.
Press the
3.
Press the Select softkey to access the Phonebook.
4.
Press the
softkey.
5.
Press the
navigation keys to choose the contact that you want to edit, and then press
the Select softkey; the contact’s details are displayed.
6.
Press the Select softkey to edit the contact’s details.
7.
Press the
required.
8.
When you have completed your modification, ensure that you are in the melody field,
and then press the OK softkey; the “Saved” message is displayed.
navigation keys to scroll to the Phonebook
icon.
navigation keys to choose the Edit option, and then press the Select
navigation keys to move between fields, and then edit the fields as
Viewing Contacts
You can view a list of all contacts in your phonebook.
 To view all contacts in your phonebook:
1.
In idle state, press the PB softkey; the phonebook opens, displaying a list of the
contacts.
2.
Search a contact, by performing one of the following:
3.
•
Navigation keys: Scroll through the list of contacts using the
•
Search feature: Using the keypad, enter the name of the contact. As you enter
letters, the phonebook locates contacts that match the entered letters. For example,
if you want to search for the contact “Sue”, as you press the key for the es letter
(“s”), the phonebook locates contacts whose names begin with this string. As you
enter the next letter (i.e., “u”), so the contacts whose names begin with “su” appear,
and so on.
To view the details of a contact, press the
then press the Select softkey.
navigation keys.
navigation keys to select the contact, and
You can also view the list of phonebook contacts from the Menu list:
4.
In idle state, press the Menu softkey.
5.
Press the
6.
Press the Select softkey to access the Phonebook.
7.
Press the
softkey.
8.
Follow steps 2 through 3 of the procedure above.
navigation keys to scroll to the Phonebook
icon.
navigation keys to choose the View option, and then press the Select
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24.4
24. Phonebook
Deleting a Contact
You can delete a selected contact in the phonebook.
 To delete a contact in the phonebook:
1.
In idle state, press the Menu softkey.
2.
Press the
3.
Press the Select softkey to access the Phonebook.
4.
Press the
softkey.
5.
Press the
navigation keys to choose the contact that you want to delete, and then
press the Select softkey; the contact’s details are displayed.
6.
Press the Select softkey; the “Delete Confirm” message is displayed.
7.
Press the OK softkey to confirm deletion (or the Back softkey to cancel); the contact is
removed from the phonebook.
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24.5
Deleting All Contacts
You can delete all contacts from the phonebook.
 To delete all contacts from the phonebook:
1.
In idle state, press the Menu softkey.
2.
Press the
3.
Press the Select softkey to access the Phonebook.
4.
Press the
navigation keys to choose the Delete All option, and then press the Select
softkey; the “Delete Confirm” message is displayed
5.
Press the OK softkey to confirm deletion (or the Back softkey to cancel); all contacts are
removed from the phonebook.
navigation keys to scroll to the Phonebook
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25. Call List
Call List
If you have subscribed to a Caller Line Identification (also referred to as Caller ID) service
with your network service provider, then when your phone rings for an incoming call, the
phone displays the calling number (and the associated name of the caller if listed in your
phonebook). If the caller’s number is withheld, “Withheld” is displayed. If the caller’s number
is unavailable, “Out Of Area” is displayed.
The phone's Call List stores up to 100 answered and unanswered (missed) calls, displaying
the date and time of the calls.
25.1
Viewing the Call List
All unanswered (missed) and answered (received) calls are saved in the Call List with the
latest call displayed at the top of the list. When the Call List is full, the oldest call is replaced
by a new call.
Missed calls are marked with an asterisk (*) at the beginning of the missed call entry. Once
the missed call has been read, the * is removed.
You can view the Call List by performing one of the following:
In the idle state, press the
navigation key.
or
Using the Menu:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Call List
press the Select softkey to access the Call List.
3.
Press the
icon, and then
navigation keys to choose one of the following options:
Call List: displays recently answered and missed calls
Missed Calls: displays only unanswered calls
♦
Received Calls: displays only answered calls
♦
Redial List: displays calls that were previously dialed
Press the Select softkey to access the selected option; the call details–call
duration and date and time of the call–are displayed.
♦
♦
4.
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25.2
Saving a Call List Number to the Phonebook
You can save a number in the Call List to your phonebook.
 To save a Call List entry to the phonebook:
25.3
1.
In idle state, press the Menu softkey.
2.
Press the
3.
Press the Select softkey to access the Call List.
4.
Press the
Section)
5.
Press the
navigation keys to choose the entry that you want to add to the phonebook,
and then press the Select softkey.
6.
Press the Menu softkey.
7.
Press the
navigation keys to choose the Add to PB option, and then press the
Select softkey; the phonebook is accessed, prompting you to enter the contact’s details
(the phone number as appearing in the Call List is automatically entered in the
phonebooks Number field). For a description on adding contacts to the phonebook, see
Section 24.1 on page 377.
navigation keys to scroll to the Call List
icon.
navigation keys to choose the required Call List option (see previous
Dialing a Call List Number
You can dial a number listed in the Call List.
 To dial a number listed in the Call List:
1.
Access the Call List menu (see Section 25.1 on page 381).
2.
Press the
navigation keys to choose the required Call List option (e.g., Missed Calls),
and then press the Select softkey.
3.
Press the
navigation keys to choose the entry that you want to dial, and then press
the Select softkey.
4.
Press
to dial the number.
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25.4
25. Call List
Deleting a Call List Number
You can delete an entry in the Call List.
 To delete a number in the Call List:
1.
Access the Call List menu (see Section 25.1 on page 381).
2.
Press the
navigation keys to choose the required Call List option (e.g., Missed Calls),
and then press the Select softkey.
3.
Press the
navigation keys to choose the entry that you want to delete, and then press
the Select softkey.
4.
Press the Menu softkey.
5.
Press the
navigation keys to choose the Delete option, and then press the Select
softkey; the “Delete Confirm” message is displayed
6.
Press the OK softkey to confirm deletion (or the Back softkey to cancel); the entry is
removed from the Call List.
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25.5
Deleting the Entire Call List
You can delete all entries listed in the Call List. When you delete all entries, all entries in the
Call List, Missed Calls, Received Calls, and Redial List groups are deleted. If you access the
Call List after deleting all entries, the “List Empty” message is displayed.
 To delete a number in the Call List:
1.
Access the Call List menu (see Section 25.1 on page 381).
2.
Press the
navigation keys to choose the required Call List option (e.g., Missed Calls),
and then press the Select softkey.
3.
Press the Select softkey once again.
4.
Press the Menu softkey.
5.
Press the
navigation keys to choose the Delete All option, and then press the Select
softkey; the “Delete Confirm” message is displayed
6.
Press the OK softkey to confirm deletion (or the Back softkey to cancel); all entries are
removed from the Call List.
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26. Clock and Alarm
Clock and Alarm
You can set the phone’s date and time as well as set an alarm.
26.1
Date and Time
You can set the phone’s date and time as well as determine the format of the date and time.
26.1.1 Changing the Date Format
You can change the date format. This can be either DD-MM-YYYY (for example, 25-12-2011)
or MM-DD-YYYY (for example, 12-25-2011).
 To change the date format:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
navigation keys to choose the Date & Time option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the Date Format option, and then press the
Select softkey.
5.
Press the
navigation keys to choose the desired format, and then press the Select
softkey; the new date format is applied and the “Saved” message is displayed.
icon, and then
26.1.2 Changing the Time Format
You can change the time format. This can be either 12-hour format (for example, 5:30 PM) or
24-hour format (for example, 17:30).
 To change the time format:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
navigation keys to choose the Date & Time option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the Time Format option, and then press the
Select softkey.
5.
Press the
navigation keys to choose the desired format, and then press the Select
softkey; the new time format is applied and the “Saved” message is displayed.
icon, and then
26.1.3 Setting the Time and Date
You can set the current time and date.
 To set the time and date:
1.
In idle state, press the Menu softkey.
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2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
navigation keys to choose the Set Date/Time option, and then press the
Select softkey.
4.
Press the
5.
To set the time:
navigation keys to access the time or date area.
•
To move between hours, minutes and AM/PM (depending on format), use the
navigation keys.
•
If the selected format is 12 hours (see Section 26.1.2 on page 385), then to select
AM or PM, use the
6.
icon, and then
navigation keys.
To set the date, use the
navigation keys to move between day, month and year.
Set the date according to the format that you selected in Section 26.1.2 on page 385.
Note: If you enter an invalid value, an error tone is emitted and the cursor flashes on
the incorrect entry.
7.
26.2
Press the OK softkey to save the new date and time.
Alarm
Your phone provides a built-in alarm clock. You can select the melody to play when the alarm
time is reached. You can also activate the snooze time so that when the alarm rings, you can
stop it temporarily and the alarm will sound again at the end of the snooze period (i.e., two
minutes).
When an alarm is set, the alarm icon appears on the screen. When the alarm time is
reached, the alarm
and Alarm/Clock
melody plays for 45 seconds.
icons flash on the screen, and the alarm
Notes:
•
When the alarm sounds, you can stop it or snooze it even if the handset
keypad is locked (described in Section 23.9 on page 372).
•
The alarm volume level is the same as the settings of the handset ringer
volume (see Section 23.5 on page 370). If the handset ringer is set to
Volume Off, the alarm still sounds at Volume 1 level.
•
During an external or internal call, if an alarm is set and the alarm time is
reached, the alarm icon and “Alarm On” flashes on the screen and the
current call display details (i.e., call duration etc.) disappear. Once you
press any key to activate the snooze or press the Off softkey to disable the
alarm, the current call details is displayed again on the screen.
•
If the phone rings for an incoming call and the alarm time is reached, the
alarm does not sound. However, if the snooze alarm is enabled, the alarm
sounds again at the end of the snooze period provided that the phone is not
ringing or in paging mode at the end of the snooze period.
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26. Clock and Alarm
26.2.1 Setting the Alarm
The alarm time is set as described below. When the alarm is set, the alarm
displayed on the main screen.
icon is
 To set the alarm:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
softkey.
navigation keys to choose the Alarm option, and then press the Select
4.
Press the
softkey.
navigation keys to choose the Alarm On option, and then press the Select
5.
Press the
navigation keys to move between hours, minutes, and AM/PM. If the
time format is 12 hours (see Section 26.1.2 on page 385), then to select AM or PM, use
the
icon, and then
navigation keys.
6.
Press the OK softkey.
7.
Press the
navigation keys to choose whether you want the snooze functionality
(Snooze On), and then press the Select softkey; the alarm time is saved and the alarm
icon is displayed on the main screen.
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26.2.2 Defining the Alarm Melody
You can define the melody that is played when the alarm sounds.
 To set the alarm melody:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
softkey.
4.
Press the
navigation keys to choose the Alarm Melody option, and then press the
Select softkey; a list of melodies is displayed.
5.
Press the
navigation keys to choose the required melody (a sample of the melody is
played when you highlight a melody), and then press the Select softkey; the melody is
applied to the alarm and the “Saved” message is displayed.
icon, and then
navigation keys to choose the Alarm option, and then press the Select
26.2.3 Disabling the Alarm
You can set the alarm to off so that it does not ring at all.
 To set the alarm to off:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the Clock/Alarm
press the Select softkey to access the menu.
3.
Press the
softkey.
navigation keys to choose the Alarm option, and then press the Select
4.
Press the
softkey.
navigation keys to choose the Alarm Off option, and then press the Select
icon, and then
26.2.4 Switching Off or Snoozing the Alarm
When the alarm rings, you can either switch it off entirely or you can snooze the alarm so that
it switches off temporarily and then rings again after two minutes.
To switch off the alarm when it rings, press the Off softkey or
icon disappears from the main screen.
To activate the snooze alarm when it rings, press the Snooze softkey or any other key
except the Off softkey or
key; the alarm icon remains displayed in the main
screen.
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27
27. Customizing the Handset
Customizing the Handset
Your phone comes with a selection of settings that you can change to personalize your
handset.
27.1
Adjusting Speaker and Earpiece Volume
You can adjust the speaker volume as well as the earpiece volume. The phone supports five
volume levels from which you can choose.
 To adjust the volume:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Audio Setup option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the Speaker Volume or Ear Volume option to
adjust the speaker or earpiece volume respectively, and then press the Select softkey.
5.
Press the
6.
Press the OK softkey; the volume level is saved.
icon, and then
navigation keys to select the volume level.
Note: You can also adjust the volume during a call, as described in Section 23.5 on
page 370.
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27.2
Ring Settings
27.2.1 Choosing the Internal Ringer Melody
You can select the ringer melody that is played when an incoming call is received from
another handset registered to the MP252 base.
 To select the internal ringer melody:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Ring Setup option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the Internal Ringer option (a sample of the
melody is played when browsing the list), and then press the Select softkey; a list of
melodies is displayed.
5.
Press the
navigation keys to choose the desired melody, and then press the Select
softkey; the melody is saved.
icon, and then
27.2.2 Choosing the External Ringer Melody
You can select the ringer melody that is played when an incoming call is received from an
external party.
 To select the external ringer melody:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Ring Setup option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the External Ringer option (a sample of the
melody is played when browsing the list), and then press the Select softkey; a list of
melodies is displayed.
5.
Press the
navigation keys to choose the desired melody, and then press the Select
softkey; the melody is saved.
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27.2.3 Adjusting the Ringer Volume
You can adjust the handset’s ringer volume.
 To adjust the ringer volume:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
icon, and then
press the Select softkey.
27.3
3.
Press the
navigation keys to choose the Ring Setup option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the Ring Volume option, and then press the
Select softkey; a volume bar is displayed indicating the volume level.
5.
To increase the volume, press the
or navigation keys; to decrease the volume,
press the
or
navigation keys. Levels filled in with color indicate the selected
volume level. The respective volume level is played during your selection.
6.
To silence the ringer, press the
or navigation keys until “Volume Off” is displayed.
when the ringer is off, the icon is displayed on the main screen.
7.
Press the OK softkey to save your settings.
Alert Tones
27.3.1 Setting the Key Tone
A single beep is emitted when you press a key on the handset. You can set whether only a
beep is emitted upon any key pressed or only Dual Tone Multi Frequencies (DTMF) tones
are emitted (when numbers 0-9 and symbols * and # are pressed), or both. You can also turn
off the key tone.
 To set the key tone:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Tone Setup option, and then press the
Select softkey.
4.
Press the
softkey.
Version 3.4.0
icon, and then
navigation keys to choose the Key Tone option, and then press the Select
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5.
6.
Press the
navigation keys to choose the required key tone:
•
Beep: a beep is emitted when any key is pressed
•
DTMF: only DTMF tones are emitted (and this occurs only when pressing the digit
keys - numbers 0-9 and the symbols * and #)
•
Beep and DTMF: beep and DTMF are activated
•
Off: no tone is emitted
Press the Select softkey to save your settings.
27.3.2 Setting the Battery Low Tone
You can turn on the alert tone when low battery and out of range are detected.
 To set the key tone:
27.4
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Tone Setup option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the On or Off option to switch on or off the low
battery alert tone respectively, and then press the Select softkey.
icon, and then
Setting the Display Language
The handset can be displayed in either English, Spanish, or Hebrew.
 To set the display language:
27.5
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Language option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the desired language, and then press the Select
softkey; the saved message appears in the language selected and the display is
changed accordingly.
icon, and then
Selecting a Wallpaper
You can set a wallpaper image that is displayed in the background on the main screen.
 To select a wallpaper:
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
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27. Customizing the Handset
3.
Press the
navigation keys to choose the Wallpaper option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the desired wallpaper. Each time you press the
key, the wallpaper is displayed in the background.
5.
Press the Select softkey to apply the wallpaper.
Setting the Contrast Level
You can set the contrast level to suit your screen visibility.
 To set the contrast level:
27.7
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
softkey.
4.
Press the
navigation keys to choose the desired contrast level. As you browse
through the level options, the contrast is displayed accordingly.
5.
Press the Select softkey to save your settings.
icon, and then
navigation keys to choose the Contrast option, and then press the Select
Activating or Deactivating Automatic Answer
Auto Answer allows you to answer an incoming call by simply picking up the handset from
the charging cradle/base. When this function is activated, you do not need to press a key to
answer the call.
 To activate or deactivate Auto Answer feature:
27.8
1.
In idle state, press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Auto Answer option, and then press the
Select softkey.
4.
Press the
navigation keys to choose whether you want to activate Auto Answer (On
option) or deactivate it (Off option).
5.
Press the Select softkey to save your settings.
icon, and then
Selecting a Base Station
Your handset can only operate with one base unit. If your handset is registered to more than
one base unit, you can select the base unit to use.
 To select a base for the handset:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
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3.
Press the
navigation keys to choose the Select Base option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the desired base unit, and then press the Select
softkey; if the selected base is successfully found, “Saved!” is displayed; otherwise,
“Fail” is displayed.
Note: The currently used base is displayed with an asterisk “*”.
27.9
Resetting Handset to Factory Defaults
You can reset your handset settings to default settings. When you reset the handset, all your
settings related to the handset are deleted and restored to factory defaults, except your
phonebook entries which remain unchanged.
 To reset the handset to factory defaults:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the HS Settings
press the Select softkey.
3.
Press the
navigation keys to choose the HS Default option, and then press the
Select softkey; you are prompted to enter your PIN number.
4.
Enter your 4-digit PIN number, and then press the OK softkey. (For defining the PIN
number, see Section 28.2 on 397.)
5.
Press the OK softkey again to confirm reset; if the PIN code is correct and the handset is
restored to default, a confirmation tone is played and the screen returns to idle. If the
PIN code is incorrect, “PIN Invalid” is displayed and you are unable to restore the
handset to defaults.
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Base Settings
28.1
Manage Handsets
28. Base Settings
28.1.1 Renaming the Handset
By default, your handset name is “DECT”. You can assign a different name to your handset.
The handset name is displayed on the main screen in idle state.
 To rename the handset:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Manage HS option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the handset that you want to rename, and then
press the Select softkey.
5.
Press the
navigation keys to choose the Rename HS option, and then press the
Select softkey.
6.
Using the alphanumerical keypad, enter the required name for the handset. Press the
Clear softkey to delete characters to the left of the cursor or press and hold the Clear
softkey to delete the whole character string.
7.
Press the OK softkey to save the new name; the handset name is saved and “Saved” is
displayed.
icon, and then
Note: The handset name can be up to 12 characters.
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28.1.2 De-Registering a Handset
You can de-register a handset from the base unit. The antenna icon on the de-registered
handset will be off. On certain handsets, you are prompted to enter the 4-digit PIN in order to
de-register a handset from the base station.
Note: You cannot de-register the handset that you are currently using.
 To de-register a handset:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Manage HS option, and then press the
Select softkey.
4.
Press the
navigation keys to choose the handset that you want to de-register, and
then press the Select softkey.
5.
Press the
navigation keys to choose the Delete HS option, and then press the Select
softkey; the “Delete Confirm” message is displayed.
6.
Press the OK softkey to confirm; the handset is de-registered and “HS Deleted” is
displayed.
7.
Press the
navigation keys to choose whether to enable (Intercept ON) or disable
(Intercept OFF) call interception, and then press the Select softkey; the “Saved”
message is displayed.
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28.2
28. Base Settings
Changing the PIN Number
A four-digit personal identification number (PIN) number is required for changing various
settings of the base unit. The PIN number is used to protect your phone against unauthorized
use. The default system PIN number is 0000.
 To change the PIN number:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Modify PIN option, and then press the
Select softkey.
4.
In the Old PIN field, enter the current PIN number, and then press the OK softkey.
5.
In the New PIN field, enter a new four-digit PIN number, and then press the OK softkey.
6.
In the Confirm field, enter the new PIN number again, and then press the OK softkey;
the new PIN number is saved and “Saved” is displayed.
icon, and then
Note: If the old PIN code is incorrect, “Old PIN Invalid” is displayed and you are
returned to the Modify PIN option.
28.3
Resetting the Base to Factory Defaults
You can reset your base settings to default settings. When you reset the base, all your
settings related to the base are deleted and restored to factory defaults, except your
phonebook entries which remain unchanged.
 To reset the base to factory defaults:
28.4
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the BS Default option, and then press the
Select softkey; you are prompted to enter your PIN number.
4.
For certain phones you may be prompted to enter your four-digit PIN number, and then
press the OK softkey. (For defining the PIN number, see Section 28.2 on 397.)
5.
Press the OK softkey again to confirm reset; if the PIN code is correct and the base is
restored to default, a confirmation tone is played and “Reset” is displayed. If the PIN
code is incorrect, “PIN Invalid” is displayed and you are unable to restore the base to
defaults.
icon, and then
Viewing the Product Version
You can view the firmware, hardware, and EEPROM version of your phone.
 To view the product version:
1.
Version 3.4.0
Press the Menu softkey.
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2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Product Version option, and then press the
Select softkey.
4.
Press the
navigation keys and then press the Select softkey to choose the option
whose version you want to view:
5.
28.5
•
Firmware: displays the firmware currently running on the phone
•
Hardware: displays the hardware version of the phone
•
EEPROM: displays the version of the non-volatile memory
icon, and then
Once the version of a particular option is displayed, press the Select softkey to return to
the previous screen to choose a different option, as listed in Step 4.
Activating Nemo Mode
Note: This function will not be supported in future release.
 To activate Nemo mode:
1.
Press the Menu softkey.
2.
Press the
navigation keys to scroll to the Base Settings
press the Select softkey.
3.
Press the
navigation keys to choose the Nemo Mode option, and then press the
Select softkey.
4.
Press the
navigation keys to choose whether you want to enable Nemo (Nemo ON)
or disable Nemo (Nemo OFF), and then press the Select softkey; the “Saved” message
is displayed.
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29. Factory Defaults
Factory Defaults
The table below lists the factory defaults of various settings:
Table 29-1: Factory Defaults
Feature
Default
Handset Settings
External Ring
Melody 15
Internal Ring
Melody 10
Handset Ring Volume
Volume 3
Earpiece Volume
Volume 3
Speaker Volume
Volume 3
Key Tone
Beep and DTMF
Battery Tone
On
Language
English
Ringer Off
Off
Wallpaper
Wallpaper 1
Contrast
Level 3
Keypad Locked
Off
Auto Answer
On
Alarm
Off
Base Settings
Date
01-01-2008
Time
00:00
System PIN for HS/BS
0000
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Reader’s Notes
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30. Troubleshooting
Troubleshooting
If you have difficulty with your phone, please try the suggestions listed below:
Table 30-1: Troubleshooting
Problem
Possible Cause
Solution
No Dialing Tone when
Pressed
When Connected to
PBX, No Connection
and/or Wrong
Connection After
Dialing
Dialing prefix is required.
Phone Displays
"Searching"
Unable to Make Calls
Service not activated or wrong
operator or wrong setting
Check your subscription with network
or change the dial mode.
No Display
Empty battery
Recharge battery.
No Conference Call
Incorrect or no configuration for
conference call feature
Ensure that 3 Way Conference is
configured in the Web interface
(Voice Over IP > Services tab).
Version 3.4.0
The connection cord of the base 1 Check the connections. Unplug
unit is not plugged in.
and plug back in the mains.
Check that the telephone line cord
2 The adapter cord is not plugged in
has been plugged into the base
correctly in the base unit.
unit and the phone socket.
3 The line is busy, as another
2 Check the base unit plug and the
handset is used.
220V plug (remove and plug-in).
4 Wrong connection cord (no Euro
3 Wait until the line is unoccupied.
AS).
4 Use the original connection cord.
Insert the dialing prefix
Base unit out of range.
1 Reduce the range between the
handset and base.
2 Base unit not connected to mains.
2 Connect base unit to mains.
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A. Specifications
Specifications
Note: For the list of features available in the current software version, refer to the
latest Release Notes.
A.1
Gateway Specifications
The specifications for the router and VoIP functionality are listed in the table below:
Table A-1: MP252 Router and VoIP Software Specifications
Feature
ADSL Interface
Details
Ethernet Interface
Wireless LAN
USB Interface
Version 3.4.0
RJ-11 ADSL Jack
ITU G.992.1 (G.dmt) – ADSL
ITU G.992.3 (G.dmt.bis) – ADSL2
ITU G.992.5 – ADSL2+
Automatic PVC scanning
Multiple PVCs
Annex B (ADSL over ISDN) support available on a separate
P/N
PPPoE-over-ETHoA or IP-over-ETHoA
4 ports RJ-45, 10/100Mbps, MDI/MDIX Auto-Sensing
Port 4 can be configured as Ethernet WAN
IEEE 802.3, IEEEE 802.3u
Wire-speed L2 switching between LAN ports
Wireless LAN - 802.11b/g/n Wireless Access Point, 2.4 GHz
2x2 MIMO internal antennas
Wireless Security:
 WPA
 WPA2
 WPA/WEP Mixed Mode
 TKIP Encryption
MAC Filtering
Virtual AP – Up to 4 SSIDs
USB 2.0 Host Interface
Provides up to 1A current
Network file server access to USB storage device:
 NTFS and FAT32 support
 Windows networking and file sharing
 WINS server
Network printer access to USB printers:
 Support for most Linux-compatible printers
 LPD and Microsoft Shared Printers support
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Feature
FXS (Phone) Interface
Details
2 RJ-11 Loop-start FXS Ports
Configurable regional settings (impedance coefficients)
Up to 5 REN / 0.5km load support (default set to 3 REN)
VoIP Signaling Protocols
SIP - RFC 3261, RFC 2327 (SDP)
Data Protocols
IPv4, TCP, UDP, ICMP, ARP
PPPoE (RFC 2516)
L2TP (RFC 2661)
PPTP (RFC 2637)
DNS, Dynamic DNS
WAN–to-LAN Layer-3 routing with:
 DHCP Client/Server (RFC 2132)
 NAT: RFC 3022, Application Layer Gateway (ALG)
 Stateful Packet Inspection Firewall
 QoS - Priority queues, VLAN 802.1p,Q tagging, traffic
shaping
Media Processing
Telephony Features
Configuration and
Management
Packetization
Security
Voice Coders: G.711µ/a-law, G.729A/B, G.722
Echo Cancelation: G.168-2004 compliant, up to 64-msec
tail length
Silence Compression
Adaptive Jitter Buffer 300 msec
Fax bypass, Voice-Band Data and T.38 fax relay
Call Hold and Transfer
Two independent 3-Way Conferencing (one per line)
Call Waiting
Message Waiting Indication
Call Forward
Telephony Signaling:
 DTMF: Detection and Generation, TIA464B. In-band,
RFC2833 or SIP-INFO relay
 Caller ID: Telcordia, ETSI, NTT - Type I, Telcordia Type
II
 Configurable Call Progress Tones
 On/Off hook detection, Hook-flash detection
Embedded Web Server for configuration and management
TR-069 and TR-104 for remote configuration and
management
Remote firmware upgrade and configuration by HTTP,
TFTP, FTP, and HTTPS
SIP-triggered remote firmware and configuration upgrade
Command-Line Interface (CLI) over Telnet
Dual image management
SNMP
RTP/RTCP Packetization (RFC 3550, RFC 3551)
DTMF Relay (RFC 2833)
HTTPS for Web-based configuration and for TR-069
Password-protected Web pages (MD5)
Configuration file encryption (3DES)
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30. Troubleshooting
Feature
Details
SIP over TLS
State-full Packet Inspection firewall
Environmental
Operating Temperature: 0 to 45°C
Storage Temperature: -25 to 80°C
Power
Power +12 VDC, 2A External Power Adaptor, 100-240
VAC/50-60 Hz
Battery Backup
Optional battery backup for up to 4 hours idle/30 min. talk time
(FXS)
Weight and Dimensions
170 x 225 x 35mm, 300g
Physical
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A.2
DECT (Only for MP252WDNB)
The specifications of the DECT phone are listed in the table below:
Table A-2: MP252WDNB DECT Phone Specifications
Feature
Details
Standard
DECT, GAP and CAT-iq 1.0 certified (functional according to CAT-iq2)
Software upgradable to comply with future CAT-iq versions
Number of Channels
10
Frequency
1.88 GHz to 1.90 GHz for EU DECT
1.92 GHz to 1.93 GHz for US DECT
Operating Range
Up to 300 meters outdoors
Up to 50 meters indoors
Operating Time
Standby: 100 hrs approx.
Talking: 10 hrs approx.
Battery Charging Time
16 hrs approx.
Number of Handsets
Up to 5 registered DECT handsets per MP252
Handset Dimensions
46.6 x 29 x 156 mm (W x D x H)
Handset Weight
119.1 g (with battery)
Handset Design
optional DECT handset design
Battery Information
Battery Type
NiMH (rechargeable battery) AAA size
Rating
600 mAh 1.2V
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A. Specifications
Reader’s Notes
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AudioCodes CPE & Access Gateway Products
MP252
Multimedia Home Gateway
User's Manual
MP252 Multimedia Home Gateway
Version 3.4.0
www.audiocodes.com

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