Grandstream Networks GXW4248 VOIP GATEWAY User Manual Grandstream Multi Port FXS Gateway GXW400x
Grandstream Networks, Inc. VOIP GATEWAY Grandstream Multi Port FXS Gateway GXW400x
User Manual
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 2 OF 56
GXW4248 USER MANUAL
INDEX
GNU GPL INFORMATION .......................................................................... 5
CHANGE LOG ........................................................................................... 6
WELCOME ................................................................................................. 7
GATEWAY GXW4248 OVERVIEW ........................................................................................................ 7
SAFETY COMPLIANCE ........................................................................................................................ 7
WARRANTY ........................................................................................................................................... 7
CONNECT YOUR GXW4248 GATEWAY ................................................... 9
EQUIPMENT PACKAGING ................................................................................................................... 9
CONNECT THE GXW4248 ................................................................................................................... 9
GXW4248 FEATURES ............................................................................. 13
SOFTWARE FEATURES OVERVIEW ................................................................................................ 13
HARDWARE SPECIFICATION ............................................................................................................ 14
GXW4248 LCD MENU......................................................................................................................... 15
FIGURE 3: LCD MENUBASIC OPERATIONS ......................................... 16
BASIC OPERATIONS .............................................................................. 17
UNDERSTANDING GXW VOICE PROMPTS ..................................................................................... 17
PLACING A PHONE CALL .................................................................................................................. 18
PHONE OR EXTENSION NUMBERS .......................................................................................... 18
DIRECT IP CALLS ........................................................................................................................ 19
CALL HOLD ......................................................................................................................................... 20
CALL WAITING .................................................................................................................................... 20
CALL TRANSFER ................................................................................................................................ 20
BLIND TRANSFER ....................................................................................................................... 20
ATTENDED TRANSFER .............................................................................................................. 21
3-WAY CONFERENCING .................................................................................................................... 21
HUNTING GROUP .............................................................................................................................. 21
INTER-PORT CALLING ....................................................................................................................... 23
SENDING AND RECEIVING FAX ....................................................................................................... 24
SUPPORT RADIUS PROTOCOL ........................................................................................................ 24
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 3 OF 56
CALL FEATURES .................................................................................... 25
CONFIGURATION GUIDE ........................................................................ 27
CONFIGURING GXW4248 VIA VOICE PROMPT .............................................................................. 27
CONFIGURING GXW4248 WITH WEB BROWSER .......................................................................... 27
ACCESS THE WEB CONFIGURATION MENU ........................................................................... 28
IMPORTANT SETTINGS ..................................................................................................................... 28
NAT SETTINGS ............................................................................................................................ 28
DTMF METHODS ......................................................................................................................... 29
PREFERRED VOCODER (CODEC) ............................................................................................ 29
SAVING THE CONFIGURATION CHANGES...................................................................................... 49
REBOOTING FROM REMOTE ........................................................................................................... 49
CONFIGURATION THROUGH A CENTRAL SERVER ....................................................................... 50
SOFTWARE UPGRADE ........................................................................... 51
FIRMWARE UPGRADE THROUGH TFTP/HTTP/HTTPS .................................................................. 51
INSTRUCTIONS FOR LOCAL FIRMWARE UPGRADE: .................................................................... 52
CONFIGURATION FILE DOWNLOAD ................................................................................................ 52
FIRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX .................................................. 53
MANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD .............................................. 53
RESTORE FACTORY DEFAULT SETTING ............................................. 54
FACTORY RESET ............................................................................................................................... 54
RESET BUTTON .......................................................................................................................... 54
IVR COMMAND ............................................................................................................................ 54
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 4 OF 56
TABLE OF FIGURES
GXW4248 User Manual
Figure 1: Diagram of GXW4248 Panel ....................................................................................................... 10
Figure 2: 50 Pin Telco Connector ................................................................................................................ 11
Figure 3: LCD Menu .................................................................................................................................... 16
TABLE OF TABLES
GXW4248 User Manual
Table 1: Definitions of the GXW Connectors .............................................................................................. 10
Table 2: Definitions of the GXW Display Panel .......................................................................................... 10
Table 3: GXW4248 Software Features ...................................................................................................... 13
Table 4: Hardware Specification of GXW4248 gateway ............................................................................ 14
Table 5: Definitions of the GXW Voice Prompts ......................................................................................... 17
Table 6: Call Features Table (Star Code) ................................................................................................... 25
Table 7: Status ............................................................................................................................................ 30
Table 8: Maintenance ................................................................................................................................. 31
Table 9: Advanced settings ........................................................................................................................ 36
Table 10: Profiles ........................................................................................................................................ 37
Table 11: FXS Ports.................................................................................................................................... 49
CONFIGURATION GUI INTERFACE EXAMPLES
GXW4248 User Manual
http://www.grandstream.com/products/gxw_series/GXW42xx/documents/GXW42xx_gui.zip
1. SCREENSHOT OF ADVANCED SETTINGS CONFIGURATION PAGE
2. SCREENSHOT OF BASIC SETTINGS CONFIGURATION PAGE
3. SCREENSHOT OF FXS PORTS CONFIGURATION LOGIN PAGE
4. SCREENSHOT OF PROFILE 1 CONFIGURATION PAGE
5. SCREENSHOT OF PROFILE 2 CONFIGURATION PAGE
6. SCREENSHOT OF STATUS PAGE
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 5 OF 56
GNU GPL INFORMATION
GXW4248 firmware contains third-party software licensed under the GNU General Public License (GPL).
Grandstream uses software under the specific terms of the GPL. Please see the GNU General Public
License (GPL) for the exact terms and conditions of the license.
Grandstream GNU GPL related source code can be downloaded from Grandstream web site from:
http://www.grandstream.com/support/faq/gnu_gpl .
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 6 OF 56
CHANGE LOG
This section documents significant changes from previous versions of GXW4248 user manuals. Only
major new features or major document updates are listed here. Minor updates for corrections or editing
are not documented here.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 7 OF 56
WELCOME
Thank you for purchasing the Grandstream GXW4248 Analog FXS IP Gateway. The GXW4248 offers an
easy to manage, easy to configure IP communications solution for any business with virtual and/or branch
locations. The GXW4248 supports popular voice codecs and is designed for full SIP compatibility and
interoperability with third party SIP providers, thus enabling you to fully leverage the benefits of VoIP
technology, integrate a traditional phone system into a VoIP network, and efficiently manage
communication costs.
This manual will help you learn how to operate and manage your GXW FXS Analog IP Gateway and
make the best use of its many upgraded features including simple and quick installation, multi-party
conferencing, and direct IP-IP Calling. This IP Analog Gateway is very easy to manage and scalable,
specifically designed to be an easy to use and affordable VoIP solution for the small – medium business
or enterprise.
GATEWAY GXW4248 OVERVIEW
The new GXW4248 has a compact and quiet design and offers superb audio quality, rich feature
functionality, strong security protection, and good manageability. It is auto-configurable, remotely
manageable and scalable.
The GXW4248 features 48 port FXS interface for analog telephones, dual 10/100/1000Mbps network
ports, and RJ21 analog port. In addition, it supports the option of 4 SIP Server profiles, caller ID for
various countries/regions, T.38 fax, flexible dialing plans, security protection (SIPS/TLS), comprehensive
voice codec including G.711 (a/u-law), G.723.1, G.726(16/24/32/40 bit rates), iLBC and G.729.
SAFETY COMPLIANCE
The GXW4248 is compliant with various safety standards including FCC/CE. Its power adapter is
compliant with UL standard. Warning: use only the power adapter included in the GXW4248 package.
Use of alternative power adapter may permanently damage the unit.
WARRANTY
Grandstream has a reseller agreement with our reseller customers. End users should contact the
company from whom the product was purchased, for replacement, repair or refund.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 8 OF 56
If you purchased the product directly from Grandstream, contact your Grandstream Sales and Service
Representative for an RMA (Return Materials Authorization) number. Grandstream reserves the right to
change the warranty policy without prior notification.
Caution: Changes or modifications to this product not expressly approved by Grandstream, or operation
of this product in any way other than as detailed by this User Manual, could void your manufacturer
warranty.
Reproduction or transmittal of the entire or any part, in any form or by any means, electronic or print, for
any purpose without the express written permission of Grandstream Networks, Inc. is not permitted.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 9 OF 56
CONNECT YOUR GXW4248 GATEWAY
Connecting the GXW4248 gateway is easy. Before you begin, please verify the contents of the
GXW4248 package.
EQUIPMENT PACKAGING
Unpack and check all accessories. Equipment includes:
• one device unit
• one RJ45 Ethernet cable
• one 24V 6.5A universal power adapter
• mount
CONNECT THE GXW4248
Follow these four (4) steps to connect your GXW4248 gateway to the Internet and access the unit’s
configuration pages.
1. Connect standard touch-tone analog phones to the GXW4248’s RJ21 port with a RJ11 to R21
cable.
2. Insert an RJ45 Ethernet cable into the WAN port of GXW4248 and connect the other end to an
uplink port (a router or a modem, etc.)
3. Plug the power adapter into the GXW4248 gateway into a power outlet.
Follow the instructions from the topic “Configuring GXW 42XX with Web Browser” for initial configuration.
The GUI pages will guide you through the remaining steps to set-up your gateway.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 10 OF 56
FIGURE 1: DIAGRAM OF GXW4248 PANEL
TABLE 1: DEFINITIONS OF THE GXW CONNECTORS
Ethernet port
Connect to the internal LAN network , router or PC
RESET
Factory Reset button. Press and hold for a while to reset factory default settings.
DC IN
Power adapter connection
Analog port
Connect to analog phones / fax machines with an RJ21 to RJ11 cable
FXS ports
FXS port to be connected to analog phones / fax machines.
Note: Once the GXW4248 is turned on and configured, the front display panel indicates the status of the
unit.
TABLE 2: DEFINITIONS OF THE GXW DISPLAY PANEL
Act LED
Remains ON if plug the network cable.
LINK LED
Indicates Ethernet port activity.
FXS LED
Indicate status of the respective FXS Ports on the back panel
Busy - ON (Solid Green)
Available - OFF
Slow blinking FXS LEDs indicates Voice Mail for that port.
All FXS LEDs slow blinking indicates provisioning.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 11 OF 56
Pin
Signal
Pin
Signal
1
RING1
26
TIP1
2
RING2
27
TIP2
3
RING3
28
TIP3
4
RING4
29
TIP4
5
RING5
30
TIP5
6
RING6
31
TIP6
7
RING7
32
TIP7
8
RING8
33
TIP8
9
RING9
34
TIP9
10
RING10
35
TIP10
11
RING11
36
TIP11
12
RING12
37
TIP12
13
RING13
38
TIP13
14
RING14
39
TIP14
15
RING15
40
TIP15
16
RING16
41
TIP16
17
RING17
42
TIP17
18
RING18
43
TIP18
19
RING19
44
TIP19
20
RING20
45
TIP20
21
RING21
46
TIP21
22
RING22
47
TIP22
23
RING23
48
TIP23
24
RING24
49
TIP24
FIGURE 2: 50 PIN TELCO CONNECTOR
NOTE:
The last pair of pin 25 and 50 on each RJ21 is not connected.
All LED lights display green when ON.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 12 OF 56
LINK LED and ACT LED blinking in following status indicate different network speed.
10M: LINK and ACT all blink, ACT blinks faster then LINK
100M: LINK and ACT all blink, ACT blinks the same fast as LINK
1000M: LINK does not blink, only ACT blink
Slow blinking of FXS LED together indicates a firmware upgrade or provisioning state.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 13 OF 56
GXW4248 FEATURES
The GXW4248 is a next generation IP voice gateway that is interoperable and compatible with leading IP-
PBXs, Soft switches and SIP platforms. The GXW4248 FXS gateway is auto-configurable, remotely
manageable and scalable. The GXW4248 offers superb voice quality, traditional telephony functionality,
easy deployment, and 48 FXS ports. Each model features flexible dialing plans, integrated call routing to
support a pure IP network call and an external power supply.
SOFTWARE FEATURES OVERVIEW
• 48 FXS ports
• RJ-45 Ethernet ports
• 4 configurable SIP profiles
• Supports Voice Codecs:
G711(a/µ, Annex I & II), G723.1A, G726 (ADPCM with 16/24/32/40 bit rates), G729 A/B, iLBC,
T.38 Fax
• Comprehensive Dial Plan support for Outgoing calls.
• G.168 Echo Cancellation
• Voice Activation Detection (VAD), Comfort Noise Generation (CNG), and Packet Loss
Concealment (PLC)
• Supports PSTN/PBX analog telephone sets or analog trunks
TABLE 3: GXW4248 SOFTWARE FEATURES
GXW4248
Telephone Interfaces
48 FXS ports
SIP Provisioning
48 SIP accounts, 4 profiles
Network Interface
10/100/1000 Mbps, RJ-45
Number of Concurrent
Calls (except when using
SRTP)
48 Concurrent Calls
Voice over Packet
Capabilities
Voice Activity Detection (VAD) with C
NG (comfort noise generation) and PLC (packet
loss concealment), LEC with NLP Packetized Voice Protocol Unit (supports
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 14 OF 56
RTP/RTCP and AAL2 protocol), G.168 compliant Echo Cancellation, Dynamic Jitter
Buffer, Modem detection & auto-switch to G.711
Voice Compression
G.711 + Annex I (PLC), Annex II (VAD/CNG format) encoder and decoder, G.722
(pending), G.723.1A, G.726(ADPCM with 16/24/32/40 bit rates), G.729, iLBC, G.726
provides proprietary VAD, CNG, and signal power estimation, Voice Play Out unit
(reordering
, fixed and adaptive jitter buffer, clock synchronization), AGC (automatic
gain control),
Status output, Decoder controlling via voice packet header
DHCP Server/Client DHCP Client only
Fax over IP T.38 compliant Group 3 Fax Relay up to 14.4kpbs and auto-
switch to G.711 for Fax
Pass-through,
Fax Datapump V.17, V.21, V.27ter, V.29 for T.38 fax relay
QoS DiffServ, TOS, 802.1P/Q VLAN tagging
Transport Protocol RTP/RTCP
DTMF Method In-audio, RFC2833, and/or SIP Info
IP Signaling SIP (RFC 3261)
Provisioning TFTP, HTTP, HTTPS
Security SRTP, IPSEC, TLS/SIPS, HTTPS, 802.1x
Management Syslog support, HTTP and Telnet access
Dial Plan Yes
3-Way Conference 3-Way conference with local mixing
Caller ID Bellcore Type 1 & 2, ETSI, BT, NTT, FSK and DTMF-based CID
Polarity Reversal / Wink Yes
Network Connectivity IPv4, IPv6, TCP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS, DHCP,
NTP, TFTP, TELNET, PPPoE, STUN
HARDWARE SPECIFICATION
The hardware specifications of the GXW4248 are detailed in Table 4.
TABLE 4: HARDWARE SPECIFICATION OF GXW4248 GATEWAY
GXW4248
Telephone Interface 2 RJ21 Ports only
FXS LEDs 48
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 15 OF 56
Network interface LAN, Single 10/100/1000 BASE-TX,RJ45
Power Input
Input
:100-240VAC, 50/60Hz
Output: 24V DC, 6.25A
LCD screen 128×32 pixel
Telco connector 2 RJ21 (50 pins)
RJ-11 connectors No
NAND Flash 64MB
DRAM 128MB (+ separate 8MB if with a slave processor)
Function Buttons 1 button for Reset/Factory Reset
Environmental Operation: 0°C to 45°C
Storage: -20°C to 60°C
Humidity: 10％ to 90% Non-condensing
Mounting Desktop and Rack mount
Onhook Voltage Fixed, 48V
Ring Voltage 50Vrms (balanced ringing)
Ring Frequency 20-50Hz
Short Haul Loop 2REN: Up to 1km on 24 AWG wire
Outdoor Protection Over-voltage Protection and surge immunity
Signaling FXS Loop-start
EMC EN55022/EN55024 and FCC part15 Class B
Safety UL
Compliance FCC, CE, C-Tick
GXW4248 LCD MENU
The GXW4248 gateway includes a small LCD screen for the display of basic information. The LCD has a
display area of 128x32 pixels, which will allow for 2 lines of text with a 16px height limitation per line.
The LCD menu is showed as Figure 3: LCD Menu. Menu is navigated by the Down-arrow and OK button.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 16 OF 56
FIGURE 3: LCD MENU
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 17 OF 56
BASIC OPERATIONS
UNDERSTANDING GXW VOICE PROMPTS
GXW4248 has a built-in voice prompt menu for simple device configuration. To enter the voice prompt
menu, press *** on the standard analog phone connected to any FXS port.
TABLE 5: DEFINITIONS OF THE GXW VOICE PROMPTS
Menu
Voice Prompt
User’s Options
Main Menu
“Enter a Menu Option”
Enter “*” for the next menu option
Enter “#” to return to the main menu
Enter “001 – 005, 007, 010, 013 - 017, 047, 086 or 099” Menu
option
Enter “9” for confirming a option
001
“DHCP Mode”, “PPPoE
Mode ”or “Static IP Mode”
Enter ‘9’ to toggle the selection
If user selects “Static IP Mode”, user need configure all the IP
address information through menu 002 to 0
05. If user selects
“Dynamic IP Mode”, the device will retrieve all IP address
information from DHCP server automa
tically when user reboots
the device.
002
“IP Address “ + IP address
The current WAN IP address is announced
Enter 12-digit new IP address if in Static IP Mode.
003
“Subnet “ + IP address
Same as Menu option 002
004
“Gateway “ + IP address
Same as Menu option 002
005
“DNS Server “ + IP address
Same as Menu option 002
007
Preferred Vocoder
Enter “9” to go to the next selection in the list:
• PCM U
• PCM A
• iLBC
• G-726
• G-723
• G-729
010
“MAC Address”
Announces the Mac address of the unit.
013
Firmware Server IP
Address
Announces current Firmware Server IP address. Enter 12 digit
new IP address.
014
Configuration Server IP
Address
Announces current Config Server Path IP address. Enter 12 digit
new IP address.
015
Upgrade Protocol
Upgrade protocol for firmware and configuration update. Enter
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 18 OF 56
“9” to toggle between TFTP and HTTP
016
Firmware Version
Firmware version information.
017
Firmware Upgrade
Firmware upgrade mode. Enter “9” to rotate among the following
three options:
1. always check
2. check when pre/suffix changes
3. never upgrade
047
“Direct IP Calling”
Enter the target IP address to make a direct IP call, after dial
tone. (See “Make a Direct IP Call”.)
086
Voice Mail
Number of voice mails
099
“RESET”
Enter “9” to reboot the device; or
Enter MAC address to restore factory default setting
(See Restore Factory Default Setting section)
700-748
Phone calls between
different ports of the same
GW4248
GXW4248 support inter-port calling from voice menu for easy
test/verification in factory
“700” Ring all ports and connect to first port pick up the call
“701-748” Call individual port
“Invalid Entry”
Automatically returns to Main Menu
Five Success Tips when using the Voice Prompt
1. “*” shifts down to the next menu option
2. “#” returns to the main menu
3. “9” functions as the ENTER key in many cases to confirm an option
4. All entered digit sequences have known lengths - 2 digits for menu option and 12 digits for IP
address. For IP address, add 0 before the digits if the digits are less than 3 (i.e. - 192.168.0.26
should be key in like 192168000026. No decimal is needed).
5. Key entry cannot be deleted but the phone may prompt error once it is detected
PLACING A PHONE CALL
PHONE OR EXTENSION NUMBERS
1. Dial the number directly and wait for 4 seconds (To change the default value, modify the following
setting - “No Key Entry Timeout”)
or
2. Dial the number directly and press # (Use # as dial key” must be configured in web configuration).
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 19 OF 56
Examples:
1. Dial a number (e.g. (626) 666-7890), first enter the prefix number (usually 1+ or international
code) followed by the phone number. Press # or wait for 4 seconds. Check with your VoIP
service provider for further details on prefix numbers.
DIRECT IP CALLS
Direct IP calling allows two parties, that is, a FXS Port with an analog phone and another VoIP Device, to
talk to each other in an ad hoc fashion without a SIP proxy.
Elements necessary to completing a Direct IP Call:
1. Both GXW4248 and other VoIP Device, have public IP addresses, or
2. Both GXW4248 and other VoIP Device are on the same LAN using private IP addresses, or
3. Both GXW4248 and other VoIP Device can be connected through a router using public or private
IP addresses (with necessary port forwarding or DMZ).
GXW4248 supports two ways to make Direct IP Calling:
Using IVR
1. Pick up the analog phone then access the voice menu prompt by dial “***”
2. Dial “047” to access the direct IP call menu
3. Enter the IP address using format ex. 192*168*0*160 after the dial tone.
Using Star Code
1. Pick up the analog phone then dial “*47”
2. Enter the target IP address using same format as above.
Note: NO dial tone will be played between step 1 and 2.
Destination ports can be specified by using “*” (encoding for “:”) followed by the port number.
Examples:
a) If the target IP address is 192.168.0.160, the dialing convention is
*47 or Voice Prompt with option 047, then 192*168*0*160.
followed by pressing the “#” key if it is configured as a send key or wait 4 seconds. In this case,
the default destination port 5060 is used if no port is specified.
b) If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be:
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 20 OF 56
*47 or Voice Prompt with option 047, then 192*168*0*160*5062 followed by pressing the “#”
key if it is configured as a send key or wait for 4 seconds.
CALL HOLD
Place a call on hold by pressing the “flash” button on the analog phone (if the phone has that button).
Press the “flash” button again to release the previously held Caller and resume conversation. If no “flash”
button is available, use “hook flash” (toggle on-off hook quickly). You may drop a call using hook flash.
CALL WAITING
Call waiting tone (2 short beeps) indicates an incoming call, if the call waiting feature is enabled. Toggle
between incoming call and current call by pressing the “flash” button. First call is placed on hold. Press
the “flash” button to toggle between two active calls.
CALL TRANSFER
BLIND TRANSFER
Assume that call Caller A and B are in conversation. A wants to Blind Transfer B to C:
3. Caller A presses FLASH on the analog phone to hear the dial tone.
4. Caller A dials *87 then dials caller C’s number, and then # (or wait for 4 seconds).
5. Caller A will hear the confirm tone. Then, A can hang up.
NOTE: “Enable Call Feature” must be set to “Yes” in web configuration page.
Caller A can place a call on hold and wait for one of three situations:
1. A quick confirmation tone (similar to call waiting tone) followed by a dial tone. This indicates the
transfer is successful (transferee has received a 200 OK from transfer target). At this point, Caller
A can either hang up or make another call.
2. A quick busy tone followed by a restored call (on supported platforms only). This means the
transferee has received a 4xx response for the INVITE and we will try to recover the call. The
busy tone is just to indicate to the transferor that the transfer has failed.
3. Continuous busy tone. The phone has timed out. Note: continuous busy tone does not indicate
the transfer has been successful, nor does it indicate the transfer has failed. It often means there
was a failure to receive second NOTIFY – check firmware for most recent release.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 21 OF 56
ATTENDED TRANSFER
Assume that Caller A and B are in conversation. Caller A wants to Attend Transfer B to C:
1. Caller A presses FLASH on the analog phone for dial tone.
2. Caller A then dials Caller C’s number followed by # (or wait for 4 seconds).
3. If Caller C answers the call, Caller A and Caller C are in conversation. Then A can hang up to
complete transfer.
4. If Caller C does not answer the call, Caller A can press “flash” to resume call with Caller B.
NOTE: When Attended Transfer fails and A hangs up, the GXW4248 will ring back user A to remind A
that B is still on the call. A can pick up the phone to resume conversation with B.
3-WAY CONFERENCING
The GXW4248 supports Bellcore style 3-way Conference.
Instructions for 3-way conference:
Assuming that call party A and B are in conversation. A (GXW4248) wants to bring C in a conference:
1. A presses FLASH (on the analog phone, or Hook Flash for old model phones) to get a dial tone.
2. A dials C’s number then # (or wait for 4 seconds).
3. If C answers the call, then A presses FLASH to bring B, C in the conference.
4. If C does not answer the call, A can press FLASH back to talk to B.
5. If A presses FLASH during conference, C will be dropped out.
6. If A hangs up, the conference will be terminated or transfer B to C if “Transfer on Conference
Hangup” set to yes
HUNTING GROUP
This feature allows the user to setup a single SIP account on the gateway and have the ability to use all
FXS ports to make/receive calls. Using this feature, all ports active in same Hunting Group will have the
same phone number and incoming calls will be distributed in a Linear or Circular manner among the ports
active in that Hunting Group. The number of hunting groups is limited by the number of ports each GXW
model has - i.e. each port can be its own Hunting Group. The most practical and efficient way to use
Hunting Groups is to assign 2 or 3 ports to separate Hunting Groups.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 22 OF 56
One additional and popular way to use the Hunting Group feature is called “multiplexed analog lines”. In
this configuration, a legacy PBX system with 8 FXO trunks can be connected to 8 GXW 42xx ports
configured as a Hunting Group. The GXW can be registered to a SIP server provider using only one
phone number. If the SIP service provider allows multiple calls to the same number, the GXW will allow 8
concurrent calls to the same SIP number. All office members can be reached remotely using the same
phone number in a round-robin fashion.
Example Configuration of a typical Hunting Group:
1. Configure the SIP account from your VoIP Service Provider on FXS port 1 under FXS Ports
webpage.
2. Select Active under the Hunting Group drop box for FXS port 1.
3. For the remaining ports (say 2, 3 and 4) select 1 for Hunting Group. Ports 2, 3 and 4 are now
active members of the hunting group associated with port 1.
This configuration will route all calls directed to FXS port 1 to ports 2, 3 and/or 4 in round robin fashion
respectively if port 1 is busy or times out. You can configure the ring timeout on the Profile page.
Example configuration of a multiple Hunting Group:
FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #2: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #3: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #4: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #5: SIP UserID and Authenticate ID left blank, Hunting Group set to "4"
FXS Port #6: SIP UserID and Authenticate ID left blank, Hunting Group set to "4"
FXS Port #7: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #8: SIP UserID and Authenticate ID left blank, Hunting Group set to "7"
…
Hunting Group 1 contains ports 1, 2, 3. Hunting Group 4 contains ports 4, 5, 6.
Hunting Group 7 contains ports 7, 8.
Please be aware, the choice of 1 for ports 2 and 3, the choice of 4 for ports 5 and 6, the choice 7 for port
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 23 OF 56
8 is required to indicate that the SIP account tied to port marked as “Active” will be used for all members
of the same Hunting group. Needless to say, those members of the same Hunting group may not be
sequential ports. In following example ports 3, 5 and 7 tied to SIP Account configured in Port #1 marked
as “Active”, and ports 4,6,8 tied to SIP Account configured in Port #2 marked as “Active” as well.
Example of not sequential configuration of a multiple Hunting Group:
FXS Port #1: SIP UserID and Authenticate ID entered, Hunting group set to "Active"
FXS Port #2: SIP UserID and Authenticate ID entered, Hunting Group set to "Active"
FXS Port #3: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #4: SIP UserID and Authenticate ID left blank, Hunting group set to "2"
FXS Port #5: SIP UserID and Authenticate ID left blank, Hunting Group set to "1"
FXS Port #6: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"
FXS Port #7: SIP UserID and Authenticate ID left blank, Hunting group set to "1"
FXS Port #8: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"
…
FXS Port #24: SIP UserID and Authenticate ID left blank, Hunting Group set to "2"
Note: A single call directed to the SIP account will NOT result in all ports ringing at the same time. They
will ring in the hunting group only. This feature is applicable to incoming calls only.
There are two types of hunting groups, Linear and Circular. Linear style will sort the call to the lowest-
numbered available line, this is also called “serial hunting”. Circular style will distribute the calls "round-
robin". If a call is assigned to line 1, the next call goes to 2 and the next to 3. The succession throughout
each of the lines continues even if one of the previous lines becomes available. When the end of the hunt
group is reached, the hunting starts over at the first line. Lines are skipped if they are still busy on a
previous call. These two hunting styles can be configured from the Profile_x page.
INTER-PORT CALLING
In some cases a user may want to make phone calls between the phones connected to multiple ports of
the same gateway when it is used as a standalone unit, without the use of a SIP server. This feature will
also be applicable when the gateway is used with Hunting Groups and is registered to SIP server only
with one master number. In such cases users still will be able to make inter-port calls by using the IVR
feature.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 24 OF 56
For example, on the GXW4248 inter-port calling is achieved by dialing *** and 7 plus two extra digits
corresponding to the port number. For example the user connected to port 1 can be reached by dialing ***
and 701; the user connected to port 24 can be reached by dialing *** 724.
SENDING AND RECEIVING FAX
GXW4248 supports fax in two modes: 1) T.38 (Fax over IP) and 2) Fax Pass through. T.38 is the
preferred method because it is more reliable and works well in most network conditions. If the service
provider supports T.38, please use this method by selecting T.38 as fax mode (default). If the service
provider does not support T.38, pass-through mode may be used. If you have problems with sending or
receiving Fax, toggle the Fax Tone Detection Mode setting.
SUPPORT RADIUS PROTOCOL
GXW4248 supports RADIUS for authentication, authorization and billing purposes. Primary and
secondary RADIUS server configurations are available to provide redundancy to this feature. In case
Primary Radius server becomes unusable, RADIUS requests will be automatically sent to the secondary
server. When at least one RADUIS server was configured, the device will allow users to make phone calls
only after authorization from RADIUS server has been received. CDR (Call Detail Record) is also sent to
the RADIUS server for billing purposes. RAIDUS server can send requests to terminate calls when run
out of pre-paid credit.
The GXW4248 will be able to work in VoIP billing environment using redundant double server
configuration. User will be able to configure primary and secondary RADUIS server IP Addresses or
FQDNs. Once at least one RADUIS server was configured, the device will allow users to make phone
calls only after permission from RADIUS server has been received. In case Primary Radius server
becomes unusable, secondary will take role of primary and will manage credit recourses in the network.
Imbedded RADIUS client also supports request generated by Radius server to terminate calls when run
out of pre-paid credit.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 25 OF 56
CALL FEATURES
GXW4248 supports the traditional telephony features available in a PBX as well as additional advanced
telephony features.
TABLE 6: CALL FEATURES TABLE (STAR CODE)
Key Call Features
*02 Forcing a Codec (per call)
*027110 (PCMU), *027111 (PCMA), *02723 (G723), *02729
(G729), *0272616 (G726-r16), *0272624 (G724-r24), *0272632 (G726-r32), *0272640 (G726-
r40), *027201 (iLBC)
*03 Disable LEC (pe call) Dial “*03” + ” number ”. No dial tone is played in the middle.
*16
Enable SRTP
*17 Disable SRTP
*30 Block CallerID (for all-config change)
*31 Send CallerID (for all-config change)
*67 Block CallerID (per call)
*82 Send CallerID (per call)
*47
Direct IP Calling. Dial “*47” + “IP address”. No dial tone will be played in the middle. Detail see
Direct IP Calling section on page 12.
*50
Disable Call Waiting
(for all-config change)
*51 Enable Call Waiting (for all-config change)
*69 Call Return Service:
Dial *69 and the phone will dial the last incoming phone number
received.
*70 Disable Call Waiting (Per Call)
*71 Enable Call Waiting (Per Call)
*72 Unconditional Call Forward: Dial “*7
2” and then the forwarding number followed by “#”. Wait
for dial tone and hang up. (dial tone indicates successful forward)
*73 Cancel Unconditional Call Forward: Dial “*73” and wait for dial tone, then hang up.
*74 Enable Paging Call: Dial “*74” and t
hen the destination phone number you want to activate in
Paging mode.
*78 Enable Do Not Disturb (DND): When enabled all incoming calls will be rejected.
*79 Disable Do Not Disturb (DND): When disabled, incoming calls will be accepted.
*87 Blind Transfer
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*90 Busy Call Forward:
Dial “*90” and then the forwarding number followed by “#”. Wait for dial
tone then hang up.
*91 Cancel Busy Call Forward: dial “*91”. Wait for dial tone. Hang up.
*92 Delayed Call Forward: Dial “*92” and then the forwarding
number followed by “#”. Wait for
dial tone then hang up.
*93 Cancel Delayed Call Forward: Dial “*93” for a dial tone, then hang up.
Flash/Hook
If user hears call waiting beep, flash/hook will switch to the new incoming call. Also used to
switch to a new channel for a new call.
# Pressing pound sign will serve as Re-Dial key.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 27 OF 56
CONFIGURATION GUIDE
CONFIGURING GXW4248 VIA VOICE PROMPT
DHCP MODE
Select voice menu option 001 to enable GXW4248 to use DHCP.
STATIC IP MODE
Select voice menu option 001 to enable GXW4248 to use STATIC IP mode, then use option 002, 003,
004, 005 to set up IP address, Subnet Mask, Gateway and DNS server respectively.
PPPOE MODE
Select voice menu option 001 to enable GXW4248 to use PPPoE mode.
FIRMWARE SERVER IP ADDRESS
Select voice menu option 013 to configure the IP address of the firmware server.
CONFIGURATION SERVER IP ADDRESS
Select voice menu option 014 to configure the IP address of the configuration server.
UPGRADE PROTOCOL
Select voice menu option 015 to choose firmware and configuration upgrade protocol. User can choose
between TFTP, HTTP, and HTTPS.
FIRMWARE UPGRADE MODE
Select voice menu option 017 to choose firmware upgrade mode among the following three options:
1) always check, 2) check when pre/suffix changes, and 3) never upgrade
CONFIGURING GXW4248 WITH WEB BROWSER
The GXW4248 gateway has an embedded Web server that allows users to configure the GXW4248
through a web browser.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 28 OF 56
ACCESS THE WEB CONFIGURATION MENU
The GXW4248 HTML configuration menu can be accessed via Ethernet port:
To access the HTML configuration menu from the Ethernet port:
1. Follow table 4 to find the Ethernet port IP address.
2. Open a web browser, type in the IP address – for example: http://GXW4248 -IP-Address (the
GXW4248 IP-Address is the Ethernet IP address for the GXW4248).
NOTE:
• The IVR announces 12 digits IP address, you need to strip out the leading “0” in the IP address. For ex.
IP address: 192.168.001.014, you need to type in http://192.168.1.14 in the web browser.
Once the HTTP request is entered and sent from a web browser, the user will see a log-in screen. There are
two default passwords for the login page:
User Level: Password: Web pages allowed:
End User Level 123 Only Status and Basic Settings
Administrator Level admin Browse all pages
The password is case sensitive with maximum length of 25 characters. The factory default password for End
User and administrator is “123” and “admin” respectively. Only an administrator can access the “ADVANCED
SETTING”, “Profile 1~4”, and “FXS PORTs” configuration pages. Please reference the GUI pages using the
following link:
http://www.grandstream.com/products/ip-voice-telephony/enterprise-analog-gateways/GXW4248/GUI.zip.
IMPORTANT SETTINGS
The end-user must configure the following settings according to the local environment.
NOTE: Most settings on the web configuration pages are set to the default values.
NAT SETTINGS
If you plan to keep the gateway within a private network behind a firewall, we recommend using STUN
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 29 OF 56
Server. The following three (3) settings are useful in the STUN Server scenario:
1. STUN Server (under Advanced Settings webpage)
Enter a STUN Server IP (or FQDN) that you may have, or look up a free public STUN Server on the
internet and enter it on this field. If using Public IP, keep this field blank.
2. NAT Traversal (under the Profile web pages)
Set this to Yes when gateway is behind firewall on a private network.
DTMF METHODS
DTMF Settings are in Profile pages.
• DTMF in-audio
• DTMF via RTP (RFC2833)
• DTMF via SIP INFO
You can enable set priority of DTMF methods according to your preference, from Priority 1 to 3. This
setting should be based on your server DTMF setting.
PREFERRED VOCODER (CODEC)
The GXW4248 supports a broad range of voice codecs. Under Profile web pages, choose your preferred
order of different codecs:
• PCMU/A (or G711µ/a)
• G729
• G723
• G726 (16/24/32/40)
• iLBC
• AAL2 (all G726)
This section will describe the options in the Web configuration user interface. As mentioned, a user can
log in as an administrator or end-user.
Functions available for the end-user are:
• STATUS: Displays the network status, account status, software version and MAC-address of the
phone
• MAINTENANCE: Basic settings such as basic network, date and time settings, and web/telnet
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 30 OF 56
access settings can be set here.
• PROFILE - AUDIO SETTINGS: DTMF, Vocoder, and Analog Line settings can be configured here
for each port.
Additional functions available to administrators are:
• MAINTENANCE: Full settings for network, upgrade/provisioning, TR-069, Security and Syslog.
• ADVANCED SETTINGS: To set advanced Ring Tongs, FXO Failover, and System Features.
• PROFILE X: To configure each of the SIP accounts.
• FXS PORTS: To configure each of the FXS ports and Hunting Groups etc.
TABLE 7: STATUS
System Info
Product Model
Contains the product model info.
Part Number
Product Part Number.
Software Version
Program: This is the main software release. This number is always used for firmware upgrade.
current version is 1.0.3.4.
Boot: current version is 1.0.3.2.
Core: current version 1.0.3.3.
Base: current version is 1.0.3.4.
System Up Time
Shows system uptime since the last reboot.
System Time
The time according to NTP server.
Service Status
Shows the status of the VOIP applications.
Network Status
MAC Address
The device ID in hexadecimal format. This is needed for Internet Service Provider
troubleshooting. The MAC address will be used for provisioning and can be found on the label on
original box and on the label located on the bottom panel of the device.
IP Address Mode
Shows the current IP mode.
IP Address
Shows IP address of GXW4248.
Subnet Mask
Shows Subnet Mask of GXW4248.
Gateway
Shows Default Gateway of GXW4248.
DNS Server
Shows DNS Server of GXW4248.
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NAT Traversal
Shows type of NAT the GXW4248 is connected to via its WAN port. It is based on STUN
protocol.
Port Status
Displays relevant information regarding the individual FXS ports. Example:
Port Hook SIP Registration DND Forward Busy Forward Delayed Forward
FXS1 On Hook Registered No 613
FXS2 Off Hook Registered No 614
FXS3 On Hook Not Registered No
FXS4 On Hook Registered Yes 615
FXS… … … …
TABLE 8: MAINTENANCE
Network Settings
IP Address Mode
Choose how the IP address obtained on the phone.
Preferred DNS
Server
Enter the preferred DNS server that should be used for DHCP and PPPoE.
DHCP Settings
Host name (Option 12)
Specifies the name of the client. This field is optional but may be
required by Internet Service Providers.
DHCP Domain
Specifies the DHCP Domain. This value is optional, but may be
required by Internet Service Providers.
Vendor Class ID (Option
60)
Used by clients and servers to exchange vendor class ID.
Static IP Settings
Configure IP Address, Subnet Mask, Gateway, DNS Server 1, and DNS Server 2.
QoS Settings
Layer 3 QoS
Defines the Layer 3 QoS parameter. This value is used for IP
Precedence, Diff-Serv or MPLS.
Layer 2 QoS
802.1Q/VLAN Tag
Value used for layer 2 VLAN tag. Default setting is blank.
Layer 2 QoS 802.1p
Priority Value
Assigns the priority value of the Layer 2 QoS packets. Valid range is
0 to 7.
STUN Settings
Use STUN
Yes or No. Default is No.
STUN server
The IP address or Domain name of the STUN server. Only non-
symmetric NAT routers work with STUN.
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Number of STUN
Response Misses
Allowed
The Number of STUN response misses allowed before
restarting DHCP. The minimum is 3 misses.
Keep-Alive Interval
Specifies in seconds how often the phone sends a blank UDP packet
to the SIP server in order to keep the "ping hole" on the NAT router to
open. The default is 20 seconds.
Upgrade and Provisioning
Lock Keypad
Update
If set to “Yes”, the configuration update via keypad is disabled.
Firmware Upgrade
and Provisioning
Specifies how firmware upgrading and provisioning request to be sent.
There are thre
e options to choose from: “Always Check for New Firmware”, “Check New
Firmware only when F/W pre/suffix changes”, and “Always Skip the Firmware Check”.
XML Config File
Password
The password used for encrypting the XML configuration file using OpenSSL.
This is required for the phone to decrypt the encrypted XML configuration file.
HTTP/HTTPS User
Name
The user name needed to authenticate withthe HTTP/HTTPS server.
HTTP/HTTPS
Password
The password needed to authenticate with the HTTP/HTTPS server.
Upgrade via
Allows users to choose the firmware upgrade method via TFTP, HTTP or HTTPS.
Firmware
Server Path
IP address or domain name of firmware server. That URL of the server that hosts the firmware
release. The default server is: fm.grandstream.com/gs
Config Server
Path
IP address or domain name of configuration server. The server hosts a copy of the configuration
file to be installed on the gateway. The default server is: fm.grandstream.com/gs
Firmware File
Prefix
Default is blank. If configured, GXW4248 will request firmware file with the prefix. This setting is
useful for Internet Telephone Service Providers. End users should keep it blank.
Firmware File
Postfix
Default is blank. This setting is useful for Internet Telephone Service Providers. End users should
keep it blank.
Config File
Prefix
Default is blank. This setting is useful for Internet Telephone Service Providers. End users should
keep it blank.
Config File
Postfix
Default is blank. This setting is useful for Internet Telephone Service Providers. End users should
keep it blank.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 33 OF 56
Allow DHCP
Option 43 and
Option 66 to
Override Server
If set to “Yes”, configuration and upgrade server’s information can be obtained using DHCP
option 66 from DHCP server. This option specifies the URL of the tftp server.
Note: If DHCP Option 66 is enabled, the gateway will attempt downloading a configuration file
from the server URL provided by DHCP, even though Config Server Path is left blank.
Automatic
Upgrade
Choose “Yes” to enable automatic upgrade and provisioning. When set to No, GXW4248 will
only do upgrade once at boot up.
When “Check every day” or “Check every week” is checked, user can specify “Hour of the day (0-
23)” or “Day of the week (0-6)”. Default time is Monday 1AM.
Authenticate
Conf File
If set to Yes, configuration file is authenticated before being accepted. This protects the
configuration from unauthorized modifications.
Firmware Key
For firmware encryption. It should be 32-digit in Hexadecimal Representation. End user should
keep it blank.
Web/Telnet Access
Web Port
By default, HTTP uses port 80. This field is for customizable web port.
Disable Telnet
If set to Yes, telnet access will be disabled. Default is No.
User Password
Set new password for web GUI access as User. This field is case sensitive with a maximum
length of 30 characters.
Admin Password
Set new password for web GUI access as Admin. This field is case sensitive with a maximum
length of 30 characters.
TR-069
ACS URL
URL of the TR-069 Auto Configuration Servers (e.g., http://acs.mycompany.com, or IP address).
ACS Username
User specify the ACS Username
ACS Password
User specify the ACS password
Periodic Inform
Enable
Default is No. If set to YES, device will send inform packets to the ACS
Periodic Inform
Interval
Frequency that the inform packets will be sent out to the ACS
Connection
Request
Username
The user name for the TR-069 Auto Configuration Server to connect to the phone.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 34 OF 56
Connection
Request
Password
The password for the TR-069 Auto Configuration Server to connect to the phone.
Security Settings
SIP TLS
Certificate
The GXW4248 supports SIP over TLS. It has built-in private key and SSL
certificate. The user specified SSL certificate used for SIP over TLS is in X.509 format.
SIP TLS Private
Key
You may also customize the SIP TLS Private Key. The user specified SIP TLS private key
used for SIP over TLS is in X.509 format.
SIP TLS Private
Key Password
SSL Private key password used for SIP Transport in TLS/TCP.
Primary RADIUS
Server
Remote Authentication Dial In User Service (RADIUS). GXW4248 supports RADIUS for
authentication, authorization and billing purposes. Primary and secondary RADIUS server
configurations are available to provide redundancy to this feature. In case Primary Radius
server becomes unus
able, RADIUS requests will be automatically sent to the secondary
server. When at least one RADUIS server was configured, the device will allow users to make
phone calls only after authorization from RADIUS server has been received. CDR (Call Detail
Record
) is also sent to the RADIUS server for billing purposes. RAIDUS server can send
requests to terminate calls when run out of pre-paid credit.
Primary RADIUS
Authentication
Port
Default is 1812. Specifies the port to be used for the Primary RADIUS Authentication.
Primary RADIUS
Account Port
Default is 1813. Specifies the port to be used for the Primary RADIUS Account.
Primary RADIUS
Server Secret
Specifies the secret string to be used to authenticate the RADIUS connection to the Primary
Server. It should match RADIUS configuration.
Secondary
RADIUS Server
Set the IP or FQDN of the Secondary RADIUS Server. In case Primary Radius server
becomes unusable, secondary will take role of primary and will manage credit recourses in the
network
Secondary
RADIUS
Authentication
Port
Default is 1812. Specifies the port to be used for the Secondary RADIUS Authentication.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 35 OF 56
Secondary
RADIUS Account
Port
Default is 1813. Specifies the port to be used for the Secondary RADIUS Account.
Secondary
RADIUS Sever
Secret
Specifies the secret string to be used to authenticate the RADIUS connection to the
Secondary Server. It should match RADIUS configuration.
RADIUS Timeout
Default is 2
RADIUS Retry
Default is 3
Download Device
Configuration
Allows user to download and save a text file containing all the P values of each setting as
configured at that point on the unit. (Note: For Security Reasons, all Passwords won’t be
Downloaded)
Date and Time
NTP Server
URI or IP address of the NTP (Network Time Protocol) server. Used by the phone to
synchronize the date and time. An extensive list of public NTP servers can be found at
http://www.ntp.org
NTP Update
Interval
Defines the update interval( in minutes ) to obtain the date and time from the server.
Time Zone
Configures the date/time used on the phone according to the specified time zone.
Self-Defined Time
Zone
This parameter allows the users to define their own time zone. For syntax and examples,
please refer to user manual.
Syslog
Syslog Server
The IP address or URL of System log server. The server collects system log information from
the device.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 36 OF 56
Syslog Level
Select the GXW4248 to report the log level. Default is NONE. The level is one of DEBUG,
INFO, WARNING or ERROR. Syslog messages are sent based on the following events:
1. product model/version on boot up (INFO level)
2. NAT related info (INFO level)
3. sent or received SIP message (DEBUG level)
4. SIP message summary (INFO level)
5. inbound and outbound calls (INFO level)
6. registration status change (INFO level)
7. negotiated codec (INFO level)
8. Ethernet link up (INFO level)
9. SLIC chip exception (WARNING and ERROR levels)
10. memory exception (ERROR level)
The Syslog uses USER facility. In addition to standard Syslog payload, it contains the
following components:
GS_LOG: [device MAC address][error code] error message
Example
: May 19 02:40:38 192.168.1.14 GS_LOG: [00:0b:82:00:a1:be][000] Ethernet link is
up
Print SIP in
Syslog
Enable or disable printing of full SIP messages in Syslog.
TABLE 9: ADVANCED SETTINGS
Ring Tones
System Ring
Cadence
Configuration option for all FXS ports ring cadence for all incoming calls.
(Syntax: c=on1/off1-on2/off2-on3/off3; [...]) Default is set to c=2000/4000; (US standards)
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 37 OF 56
Call Progress
Tones
Using these settings, user can configure tone frequencies according to user preference. By
default, the tones are set to North American frequencies. Frequencies should be configured
with known values to avoid uncomfortable high pitch sounds. ONis the period of ringing (ON
time in ms) while OFF is the period of silen
ce. In order to set a continuous ring, OFF should be
zero. Otherwise it will ring ON ms and a pause of OFF ms and then repeat the pattern.
• “Dial tone”
• “Ringback tone”
• “Busy tone”
• “Reorder tone”
• “Confirmation tone”
• “Call-Waiting tone”
Please refer the document below to determine your local call progress tones:
http://www.itu.int/ITU-T/inr/forms/files/tones-0203.pdf
FXO Failover
Failover to FXO
Gateway
Enable or disable the Failover FXO Gateway.
FXO Gateway IP
IP Address or URI of the FXO gateway.
System Features
Disable Direct IP
Call
Disables the Direct IP Call function. Default is “No”. If set to “Yes” direct IP-to-IP calling will
not be supported.
Disable SIP
NOTIFY
Authentication
Disables challenging SIP NOTIFY reboot and resync messages.
Disable Voice
Prompt
Disables the voice prompt configuration. Default is “No”. If set to “Yes” accessing integrated
voice menu will be impossible.
IVR Language
Choose English, Chinese, or Spanish.
TABLE 10: PROFILES
General Settings
Profile Active
When set to Yes, the SIP Profile is activated.
SIP Server
SIP Server’s IP address or Domain name provided by VoIP service provider.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 38 OF 56
Failover SIP
Server
Failover SIP Server’s IP address or Domain name provided by VoIP Service provider. This
server will be used if the Primary SIP server becomes unavailable.
Prefer Primary SIP
Server
Default is No. If set to yes it will register to Primary Server if registration with Failover server
expires
Outbound Proxy
IP address or Domain name of Outbound Proxy, or Media Gateway, or Session Border
Controller. Used by GXW4248
for firewall or NAT penetration in different network environments.
If symmetric NAT is detected, STUN will not work and
ONLY outbound proxy can correct the
problem.
Network Settings
DNS Mode
One from the 3 modes available for “DNS Mode” configuration:
-A Record (for resolving IP Address of target according to domain name)
-SRV (DNS SRV resource records indicates how to find services for various protocols)
-NAPTR/SRV (Naming Authority Pointer according to RFC 2915)
-Use Configured IP (If selected, please fill in Primary IP, Backup IP 1 and Backup IP 2.)
One mode can be chosen for the client to look up server.
The default value is “A Record”
Primary IP
Configures the primary IP address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
Backup IP 1
Configures the backup IP 1 address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
Backup IP 2
Configures the backup IP 2 address where the phone sends DNS query to when "Use
Configured IP" is selected for DNS mode.
NAT Traversal
This parameter defines whether the GXW4248 NAT traversal mechanism is activated or not. If
activated (by choosing “Yes”) and a STUN server is also specified, then the GXW4248
performs according to the STUN client specification. Under this mode, the embedded STUN
client will detect if and what type of firewall/NAT is being used. If
the detected NAT is a Full
Cone, Restricted Cone, or a Port-Restricted Cone, the GXW4248
will use its mapped public IP
address and port in all of its SIP and SDP messages.
If the NAT Traversal field is set to “Yes” with no specified STUN server, the GXW4248
will
periodically (every 20 seconds) send a blank UDP packet (with no payload data) to the SIP
server to keep the “hole” on the NAT open.
Use NAT IP
The NAT IP address used in SIP/SDP messages. It should ONLY be used if required by your
ITSP.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 39 OF 56
Proxy-Require
A SIP Extension to notify the SIP server that the phone is behind a NAT/Firewall.
SIP Settings - Basic Settings
SIP transport
User can select UDP or TCP or TLS. Please make sure you’re SIP Server or network
environment supports SIP over the selected transport method. Default is UDP.
SIP Registration
This parameter controls whether the GXW4248 needs to send REGISTER messages to the
proxy server. The default setting is “Yes”.
Unregister on
Reboot
Default is No. If set to “Yes”, the SIP user’s registration information is cleared on reboot.
Outgoing Calls
Without
Registration
Default is No. If set to “Yes,” user can place outgoing calls even when not registered (if
allowed by Internet Telephone Service Provider) but is unable to receive incoming calls.
Any port, member of a Hunting Group that is not registered with a SIP account, will be able to
place outbound calls using the SIP credentials of the primary Hunting Group port.
For example: Port 1, 3 and 5 are members of the same Hunting Group
. Port 1 is registered
with a SIP account. Ports 3 and 5 are not registered. Ports 3 and 5 will be able to place
outbound calls using the SIP account of port 1, even if Outgoing Call without Registration
is
set to No
Register
Expiration
Allows the user to specify the time frequency (in minutes) for the GXW4248 to refresh its
registration with the specified registrar. The default interval is 60 minutes (or 1 hour). The
maximum interval is 65535 minutes (about 45 days).
SIP Registration
Failure Retry Wait
Time
Allows the user to specify the time frequency (in seconds) for the GXW4248 to re-register after
registration failure. The default interval is 20 seconds. The maximum interval is 3600
seconds
(1 hour).
Reregister Before
Expiration
Determines how many seconds before the previous registration expires that the port should
reregister.
Local SIP Port
Defines the local SIP port the GXW4248 will listen and transmit. The default value for Profile 1
is 5060 and 6060 for Profile 2.
Use Random SIP
Port
Default is No. If set to Yes, the device will pick randomly-generated SIP ports. This is usually
necessary when multiple GXW4248/HT50X are behind the same NAT.
SIP T1 Timeout
T1 is an estimate of the round-trip time between the client and server transactions.
If the network latency is high, select larger value for more reliable usage.
SIP T2 Timeout
Maximum retransmission interval for non-INVITE requests and INVITE responses.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 40 OF 56
Remove OBP from
Route Header
Default is No. If set to Yes, the Outbound Proxy will be removed from the route header.
Support SIP
Instance ID
Default is Yes. If set to Yes, the contact header in REGISTER request will contain SIP Instance
ID as defined in IETF SIP Outbound draft.
Refer-To Use
Target Contact
Default is No. If set to YES, then for Attended Transfer, the “Refer-To” header uses the
transferred target’s Contact header information.
SUBSCRIBE for
MWI
Default is No. When set to “Yes” a SUBSCRIBE for Message Waiting Indication will be sent
periodically.
Enable 100rel
Enables the use of PRACK (Provisional Acknowledgment) method.
TEL URI
The default setting is “Disabled”. If the phone has an assigned PSTN
Number, this field should be set to “User=Phone” then a
“User=Phone” parameter will be attached to the “From header” in the SIP
request to indicate the E.164 number. If server supports TEL URI format, then this option needs
to be selected.
SIP Settings - Session Timer
Session
Expiration
Grandstream implemented SIP Session Timer. The session timer extension enables SIP
sessions to be periodically “refreshed” via a SIP request (UPDATE, or re-INVITE. When
the
session interval expires, if there is no refresh via a UPDATE or re-
INVITE message, the
session will be terminated.
Session Expiration is the time (in seconds) at which the
session is considered timed out, if no
successful session refresh transaction occurs beforehand. The default value is 180 seconds.
Min-SE
The minimum session expiration (in seconds). The default value is 90 seconds.
Caller Request
Timer
If selecting “Yes” the phone will use session timer when it makes outbound calls if remote party
supports session timer.
Callee Request
Timer
If selecting “Yes” the phone will use session timer when it receives inbound calls with session
timer request.
Force Timer
If selecting “Yes” the phone will use session timer even if the remote party does not support this
feature. Selecting “No” will allow the phone to enable session timer only when the remote party
support this feature.
To turn off Session Timer, select “No”
for Caller Request Timer, Callee Request Timer, and
Force Timer.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 41 OF 56
UAC Specify
Refresher
As a Caller, select UAC to use the phone as the refresher, or UAS to use the Callee or proxy
server as the refresher.
UAS Specify
Refresher
As a Callee, select UAC to use caller or proxy server as the refresher, or UAS to use the phone
as the refresher.
Force INVITE
Session Timer can be refreshed using INVITE method or UPDATE method. Select “Yes” to use
INVITE method to refresh the session timer.
SIP Settings - Security Settings
Validate Incoming
Messages
Defines whether the incoming messages will be validated.
Check SIP User ID
for Incoming
INVITE
If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it
doesn't match the phone's SIP User ID, the call will be rejected. Direct IP calling will also be
disabled.
Accept Incoming
SIP from Proxy
Only
If set to "Yes", SIP User ID will be checked in the Request URI of the incoming INVITE. If it
doesn't match the phone's SIP User ID, the call will be rejected. Direct IP calling will also be
disabled.
Authenticate
Incoming INVITE
If set to "Yes", the phone will challenge the incoming INVITE for authentication with SIP 401
Unauthorized response.
Fax Settings
Fax Mode
T.38 (Auto Detect) FoIP by default, or Pass-Through (must use codec PCMU/PCMA)
Fax Tone
Detection Mode
Default is Callee. This decides whether Caller or Callee sends out the re-INVITE for T.38 or
Fax Pass Through.
Send Re-INVITE
After Fax
Completion
Default is No, If set to “Yes”, device will send an INVITE with audio vocoders upon completition
of Fax to continue session in audio only.
Send Re-INVITE
After Fax Tone
If set to “Yes”, device will send an Re-INVITE after Fax tone is detected, disabling will only work
under Broadsoft feature.
Enable Silence
Detection for Fax
Disconnect
For fax machines that do not send a Disconnect when fax is done. This option
Enables/Disables the detection of silence in order to know the fax has finished. The silence
period is non-configurable and fixed to 7 seconds.
Audio Settings
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 42 OF 56
Preferred DTMF
method (in listed
order)
The GXW4248 supports up to 3 different DTMF methods including in-audio, via RTP
(RFC2833) and via Sip Info. The user can configure DTMF method in a priority list.
Disable DTMF
Negotiation
Default is No. If set to yes, use above DTMF order without negotiation
DTMF Payload
Type
Sets the payload type for DTMF using RFC2833.
Preferred Vocoder
The GXW4248 supports up to 5 different Vocoder types including G.711 A-/U-law, G.726
(Supports bit rates 16, 24, 32 and 40), G.723.1, G.729A/B, iLBC
. The user can configure
Vocoders in a preference list that will be included with the same preference order in SDP
message. The first Vocoder is entered by choosing the appropriate option in
“Choice 1”. The
last Vocoder is entered by choosing the appropriate option in “Choice 8”.
Voice Frames per
TX
Number of the frame size when it transmits. Default is 2, from 1 -4 for G711/G726/G729
G723 Rate
Defines the encoding rate for G.723 vocoder. By default, 6.3kbps rate is chosen.
G726-32 Packing
Mode
Choose the packing mode for G726-32
iLBC Frame Size
Sets the iLBC frame size in 20ms or 30ms
iLBC Payload type
Default value is 97. Defines payload type for iLBC. The valid range is between 96 and 127.
AAL2-G726-16
Payload type
Default value is 100. Range is from 96 to 127.
AAL2-G726-24
Payload type
Default value is 99. Range is from 96 to 127.
AAL2-G726-32
Payload type
Default value is 104. Range is from 96 to 127.
AAL2-G726-40
Payload type
Default value is 103. Range is from 96 to 127.
Use First
Matching Vocoder
in 200OK SDP
Default is No. If set to “Yes”, device will include only the first match vocoder in its 200OK
response, otherwise it will include all match vocoders in same order received in INVITE.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 43 OF 56
SRTP Mode
Default is Disabled. Other options are Enabled but not forced, and Enabled and forced.
It uses SDP Security Description to exchange key. Please refer
SDES: http://www.apps.ietf.org/rfc/rfc4568.html
SRTP: http://www.apps.ietf.org/rfc/rfc3711.html
Silence
Suppression
(VAD)
Default is No. VAD allows detecting the absence of audio and conserve bandwidth by
preventing the transmission of "silent packets" over the network.
Jitter Buffer Type
Select either Fixed or Adaptive based on network conditions.
Jitter Buffer
Length
Select Low, Medium or High based on network conditions.
•
High (initial 200ms, min 40ms, max 600ms) Note: not all vocoders can meet the high
requirement
• Medium (initial 100ms, min 20ms, max 200ms)
• Low (initial 50ms, min 10ms, max 100ms)
SLIC Setting
Depends on standard phone type (and location)
Caller ID Scheme
Select the value according to the local Telco standard where the GXW4248 is installed.
Please refer to the pull down list to select.
Polarity Reversal
Default is No. If set to “Yes”, polarity will be reversed upon call establishment and termination.
Loop Current
Disconnect
Set to Yes if the traditional PBX you are using with GXW4248 uses this method for signaling
call termination. Default is No.
Loop Current
Disconnect
duration
Default is 200. In 100 - 1 0000 milliseconds range.
Enable Hook
Flash
If no, flash will be treated as an on hook event.
Hook Flash timing
(Minimum)/
(Maximum)
Sets the minimum/maximum time the phone is on hook before being detected as a hook flash.
The range is 40 to 2000 milliseconds
On Hook Timing
Sets the time required to detect that the phone is on hook. The range is 40 to 2000
milliseconds. Default is 400 milliseconds.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 44 OF 56
Gain
Handset volume adjustment. RX is for receiving volume (direction FXSto analog phone), TX
is for transmission volume (Analog phone to FXS). Default values are 0dB
for both
parameters. Loudest volume: +6dB Lowest volume: -6dB.
Disable Line Echo
Canceller (LEC)
Default is No. If set to “Yes”, device will not use LEC to remove echo from a voice
communication.
SLIC Setting
Depends on standard phone type (and location)
Caller ID Scheme
Select the value according to the local Telco standard where the GXW4248 is installed.
Please refer to the pull down list to select.
Call Settings
Early Dial
Default is No. Use only if proxy supports 484 response. This parameter controls whether the
phone will send an early INVITE each time a key is pressed when a user dials a number. If set
to “Yes”, an INVITE is sent using the dial-number collected
thus far; Otherwise, no INVITE is
sent until the “(Re-
)Dial” button is pressed or after about 5 seconds have elapsed if the user
forgets to press the “Re-
Dial” button. The “Yes” option should be used ONLY if there is a SIP
proxy configured and the proxy
server supports 484 Incomplete Address response. Otherwise,
the call will likely be rejected by the proxy (with a 404 Not Found error).
This feature is NOT designed to work with and should NOT be enabled for direct IP-to-
IP
calling.
Dial Plan Prefix
Sets the prefix added to each dialed number.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 45 OF 56
Dial Plan
Dial Plan Rules:
1. Accept Digits: 1,2,3,4,5,6,7,8,9,0 , *, #, A,a,B,b,C,c,D,d
2. Grammar: x - any digit from 0-9;
a. xx+ - at least 2 digits number;
b. xx. – at least 2 digits number;
c. ^ - exclude;
d. [3-5] - any digit of 3, 4, or 5;
e. [147] - any digit 1, 4, or 7;
f. <2=011> - replace digit 2 with 011 when dialing
g. < =1> -
add a leading 1 to all numbers dialed, vice versa will remove a 1 from
the number dialed
h. | - or
• Example 1: {[369]11 | 1617xxxxxxx} –
Allow 311, 611, 911, and any 10 digit numbers of leading digits 1617
• Example 2: {^1900x+ | <=1617>xxxxxxx} –
Block any number of leading digits 1900 and add prefix 1617 for any dialed 7 digit
numbers
• Example 3: {1xxx[2-9]xxxxxx | <2=011>x+} –
Allow any length of number with leading digit 2 and 10 digit-
numbers of leading digit 1
and leading exchange number between 2 and 9; If leading digit is 2, replace leading
digit 2 with 011 before dialing.
3. Default: Outgoing - {x+}
Example of a simple dial plan used in a Home/Office in the US:
{ ^1900x. | <=1617>[2-9]xxxxxx | 1[2-9]xx[2-9]xxxxxx | 011[2-9]x. | [3469]11 }
Explanation of example rule (reading from left to right):
• ^1900x. - prevents dialing any number started with 1900
• <=1617>[2-9]xxxxxx - allows dialing to l
ocal area code (617) numbers by dialing 7
numbers and 1617 area code will be added automatically
• 1[2-9]xx[2-9]xxxxxx |- allows dialing to any US/Canada Number with 11 digits length
• 011[2-9]x. - allows international calls starting with 011
[3469]11 - allow dialing special and emergency numbers 311, 411, 611 and 911
Note: In some cases user wishes to
dial strings such as *123 to activate voice mail or other
application provided by service provider. In this case * should be predefined inside dial plan
feature and the Dial Plan will be: { [x*]+ }.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 46 OF 56
Use # as Dial Key
Allows users to configure the “#” key as the “Send” (or “Dial”) key. If set to “Yes”, “#” will send
the number. In this case, this key is essentially equivalent to the “Dial” key. If set to “No
”, this
“#” key can be included as part of number.
No Key Entry
Timeout
Default is 4 seconds. Call will be completed within this time interval if no additional key entry
occurs.
Off-Hook Auto-
Dial Delay
Determines how many seconds after off-hook to wait before autodialing the extension set under
Advanced Port Settings. The range is 0 to 60 seconds.
Enable Call
Features
Default is Yes. (If Yes, call features using star codes will be supported locally)
Disable Call
Waiting
Default is No. If set to YES Call Waiting indication information will not be provided to analog
phone connected to this FXS port.
Disable Call
Waiting Caller ID
Default is No. If set to YES Call Waiting caller ID will not be provided to analog phone
connected to this FXS port.
Disable Call
Waiting Tone
Default is No. This is to disable the stutter Call Waiting Tone when a Call Waiting call arrives.
The CWCID will still be displayed.
Disable Receiver
Offhook Tone
Default is No. If YES, ROH tone will not be played after off hook for 60 seconds.
Disable Reminder
Ring for On-Hold
Call
Default is No. This is to disable the Reminder Ring that is played when a call is waiting on hold
and the analog phone goes on-hook.
Disable Visual
MWI
Visual message indicator is a special on-hook caller ID type message that enables and
disables the message waiting light on certain phones. GXW4248
has this feature enabled by
default. However, certain phones (rare) that do not support it
may mistakenly treat this CID
signal as an incoming call. A configuration option is needed to turn on MWI in this case.
Visual MWI Type
This is the type of signal sent to the analog phone to make it turn the lamp ON upon receiving a
Voice mail. Check the phone’s manual to find out what signal is supported, FSK (default) or
Neon.
Transfer on
Conference
Hangup
Defines whether the call is transferred to the other party if the conference initiator hangs up.
Disable Bellcore-
style 3-Way
Conference
Disable Bellcore-style 3-Way Conference
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 47 OF 56
Send Hook Flash
Event
Default is No. If set to yes, flash will be sent as a DTMF event.
Ring Timeout
Incoming call will stop ringing when not picked up given a specific period of time.
Delayed Call
Forward Wait
Timeout
Default value is 20 seconds. In case this feature activated using * codes (*92 code), the call
will be forwarded after this preconfigured amount of time.
Send Anonymous
If this parameter is set to “Yes”, the “From” header along with Privacy and
P_Asserted_Identity headers in outgoing INVITE message will be set to anonymous, blo
cking
Caller ID.
Anonymous Call
Rejection
Default is No. If set to Yes, incoming calls with anonymous Caller ID will be rejected with 486
Busy message.
Hunting Group
Type
Linear and Circular. Linear style will sort the call to the lowest-numbered available line, this is
also called “serial hunting”. Circular style will distribute the calls "round-
robin". If a call is
assigned to line 1, the next call goes to 2 and the next to 3. The succession throughout each of
the lines continues even if one of the prev
ious lines becomes available. When the end of the
hunt group is reached, the hunting starts over at the first line. Lines are skipped if they are still
busy on a previous call. These two hunting styles can be configured from the Profile_x page.
Hunting Group
Ring Timeout
Default is 20 seconds. If call is not answered within this designated time period, the call will be
forwarded to the next member of a Hunt Group.
Special Feature
Default is Standard. Choose the selection to meet some special requirements from Softswitch
vendors. Example of vendors - CBCOM, RNK.
Ring Tones
Distinctive
Ringtone
Custom Ring Tone 1 to 3 with associate Caller ID: when selected, if Caller ID is configured,
then the device will ONLY uses this ring tone when the incoming call
is from the Caller ID.
System Ring Tone is used for all other calls. When selected but no Caller ID is configured, the
selected ring tone will be used for all incoming calls.
Distinctive ring tones can be configured
not only for matching whole number, bu
t also for matching prefixes. In this case symbol * (star)
will be used.
If server supports Alert-Info header and standard ring tone set (Bellcore)
or distinctive ring tone
1-10 is specified, then the ring tone in the Alert-Info header from server will be used.
For example:
I
f configured as *617, Ring Tone 1 will be used in case of call arrived from Massachusetts. Any
other incoming call will ring using cadence defined in parameter System Ring Cadence located
under Advanced Settings Configuration page.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 48 OF 56
Ring Tones
Configure ring cadences according to preference.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 49 OF 56
TABLE 11: FXS PORTS
Port Settings
SIP User ID
User account information, provided by VoIP service provider (ITSP).
Usually in the form of digit similar to phone number or actually a
phone number.
Authenticate ID
SIP service subscriber’s Authenticate ID used for authentication.
Can be
identical to or different from SIP User ID.
Password
SIP service subscriber’s account password for GXW4248 to register
to (SIP) servers of ITSP.
Name
Any name to identify this specific user.
Profile
Select the corresponding Profile ID (1/2/3/4)
Enable FXS (TR-069)
Enable or disable the FXS port.
Advanced Port
Settings
Offhook Auto-dial
Configure an auto dial number when offhook.
Hunting Group
Assign this port to a certain hunting group
FXO Mapping
Map to FXO Port #
This is used only when peering with a Grandstream GXW410x.
Default 1, Supported values are 1-
8, meaning line 1 to 8 of the
GXW410x device where the port will be mapped to.
Map to FXO Gateway
IP
This is used when peering with an FXO gateway of any brand. You
have to specifically mention the IP and sip port where call will be sent
to.
And Port
Sip port that will be annexed to the IP address above.
SAVING THE CONFIGURATION CHANGES
After user makes a change to the configuration, press the “Update” button in the Configuration Menu. The
web browser will then display a message window to confirm saved changes.
Grandstream recommends reboot or power cycle the gateway after saving changes.
REBOOTING FROM REMOTE
Press the “Reboot” button at the bottom of the configuration menu to reboot the phone remotely. The web
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 50 OF 56
browser will then display a message window to confirm that reboot is underway. Wait 30 seconds to log in
again.
CONFIGURATION THROUGH A CENTRAL SERVER
Grandstream GXW4248 can be automatically configured from a central provisioning system.
When GXW4248 boots up, it will send TFTP or HTTP/HTTPS requests to download configuration files,
“cfg000b82xxxxxx” and “cfg00082xxxxxx.xml”, where “000b82xxxxxx” is the LAN MAC address of the
GXW4248. If the download of “cfgxxxxxxxxxxxx.xml” is not successful, the provision program will issue
request a generic configuration file “cfg.xml”. Configuration file name should be in lower case letters.
The configuration data can be downloaded via TFTP or HTTP/HTTPS from the central server. A service
provider or an enterprise with large deployment of GXW4248 can easily manage the configuration and
service provisioning of individual devices remotely from a central server.
Grandstream provides a central provisioning system GAPS (Grandstream Automated Provisioning
System) to support automated configuration of Grandstream devices. GAPS uses enhanced (NAT
friendly) TFTP or HTTP (thus no NAT issues) and other communication protocols to communicate with
each individual Grandstream device for firmware upgrade, remote reboot, etc.
Grandstream provides GAPS service to VoIP service providers. Use GAPS for either simple redirection
or with certain special provisioning settings. At boot-up, Grandstream devices by default point to
Grandstream provisioning server GAPS, based on the unique MAC address of each device, GAPS
provision the devices with redirection settings so that they will be redirected to customer’s TFTP or
HTTP/HTTPS server for further provisioning.
Grandstream also provides configuration tools (Windows and Linux/Unix version) to facilitate the task of
generating device configuration files. The Grandstream configuration tools are free to end users. The
configuration tools and configuration templates are available for download from
http://www.grandstream.com/support/tools .
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 51 OF 56
SOFTWARE UPGRADE
Software upgrade can be done via either TFTP or HTTP/HTTPS. The corresponding configuration
settings are in the ADVANCED SETTINGS configuration page.
FIRMWARE UPGRADE THROUGH TFTP/HTTP/HTTPS
To upgrade via TFTP or HTTP/HTTPS, the “Firmware Upgrade and Provisioning upgrade via” field needs
to be set to TFTP HTTP or HTTPS, respectively. “Firmware Server Path” needs to be set to a valid URL
of a TFTP or HTTP server, server name can be in either FQDN or IP address format. Here are examples
of some valid URL.
e.g. firmware.mycompany.com:6688/Grandstream/1.0.7.6
e.g. firmware.grandstream.com
NOTES:
Firmware upgrade server in IP address format can be configured via IVR. Please refer to the
CONFIGURATION GUIDE section for instructions. If the server is in FQDN format, it must be set
via the web configuration interface.
Grandstream recommends end-user use the Grandstream HTTP server. Its address can be found
at http://www.grandstream.com/support/firmware . Currently the HTTP firmware server URL is
firmware.grandstream.com. For large companies, we recommend to maintain their own TFTP/
HTTP/HTTPS server for upgrade and provisioning procedures.
Once a “Firmware Server Path” is set, user needs to update the settings and reboot the device. If
the configured firmware server is found and a new code image is available, the GXW will attempt
to retrieve the new image files by downloading them into the GXW420x ’s SRAM. During this
stage, the GXW’s LEDs will blink until the checking/downloading process is completed. Upon
verification of checksum, the new code image will then be saved into the Flash. If
TFTP/HTTP/HTTPS fails for any reason (e.g. TFTP/HTTP/HTTPS server is not responding, there
are no code image files available for upgrade, or checksum test fails, etc), the GXW will stop the
TFTP/HTTP/HTTPS process and simply boot using the existing code image in the flash.
Firmware upgrade may take as long as 15 to 30 minutes over Internet, or just 5 minutes if it is
performed on a LAN. It is recommended to conduct firmware upgrade in a controlled LAN
environment if possible. For users who do not have a local firmware upgrade server,
Grandstream provides a NAT-friendly TFTP server on the public Internet for firmware upgrade.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 52 OF 56
Grandstream’s latest firmware is available http://www.grandstream.com/support/firmware .
Oversea users are strongly recommended to download the binary files and upgrade firmware
locally in a controlled LAN environment.
Alternatively, user can download a free TFTP or HTTP server and conduct local firmware upgrade.
A free windows version TFTP server is available for download from
http://support.solarwinds.net/updates/New-customerFree.cfm. Our latest official release can be
downloaded from http://www.grandstream.com/y-firmware.htm.
INSTRUCTIONS FOR LOCAL FIRMWARE UPGRADE:
1. Unzip the file and put all of them under the root directory of the TFTP server.
2. Put the PC running the TFTP server and the GXW4248 device in the same LAN segment.
3. TFTP server's security settings should be changed from "Receive Only" to "Transmit Only" for the
firmware upgrade.
4. Configure the Firmware Server Path with the IP address of the PC
5. Update the change and reboot the unit.
CONFIGURATION FILE DOWNLOAD
Grandstream SIP Device can be configured via Web Interface as well as via Configuration File through
TFTP or HTTP/HTTPS. “Config Server Path” is the TFTP or HTTP/HTTPS server path for configuration
file. It needs to be set to a valid URL, either in FQDN or IP address format. The “Config Server Path” can
be same or different from the “Firmware Server Path”.
A configuration parameter is associated with each particular field in the web configuration page. A
parameter consists of a Capital letter P and 1 to 3 (Could be extended to 4 in the future) digit numeric
numbers. i.e., P2 is associated with “Admin Password” in the ADVANCED SETTINGS page. For a
detailed parameter list, please refer to the corresponding firmware release configuration template.
When a Grandstream device boots up or reboots, it will issue a request for a configuration file
“cfgxxxxxxxxxxxx”, where “xxxxxxxxxxxx” is the MAC address of the device, i.e., “cfg000b820102ab”. In
addition, device will also requests a XML configuration file “cfgxxxxxxxxxxxx.xml”. If the download of
“cfgxxxxxxxxxxxx.xml” is not successful, the provision program will issue a request for a generic
configuration file “cfg.xml”. Configuration file name should be in lower case letters.
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 53 OF 56
FIRMWARE AND CONFIGURATION FILE PREFIX AND POSTFIX
Firmware Prefix and Postfix allows device to download the firmware name with the matching Prefix and
Postfix. This makes it possible to store ALL of the firmwares with different version in one single directory.
Similarly, Config File Prefix and Postfix allows device to download the configuration file with the matching
Prefix and Postfix. Thus multiple configuration files for the same device can be stored in one directory.
In addition, when the field “Check New Firmware only when F/W pre/suffix changes” is selected, the
device will only issue firmware upgrade request if there are changes in the firmware Prefix or Postfix.
MANAGING FIRMWARE AND CONFIGURATION FILE DOWNLOAD
When “Automatic Upgrade” is set to “Yes”, Service Provider can use P193 to have the devices
periodically check with either Firmware Server or Config Server, whenever they are defined. This allows
the device periodically check whether there is any new changes need to be taken, similar to the AntiVirus
Software to upgrade the Virus Definition files. Screenshot is below:
Automatic Upgrade:
No Yes, every
10080
minutes(60-5256000).
Yes, daily at hour
1
(0-23). Yes, weekly on day
1
(0-6).
FIRMWARE 1.0.3.4 GXW42XX USER MANUAL PAGE 54 OF 56
RESTORE FACTORY DEFAULT SETTING
FACTORY RESET
WARNING! Restoring the Factory Default Setting will DELETE all configuration information of the phone.
Please BACKUP or PRINT out all the settings before you approach to following steps. Grandstream will
not take any responsibility if you lose all the parameters of setting and cannot connect to your VoIP
service provider.
There are two (2) methods for resetting your unit:
RESET BUTTON
Reset default factory settings following these four (4) steps:
1. Unplug the Ethernet cable.
2. Locate a needle-sized hole on the back panel of the gateway unit next to the power
connection.
3. Insert a pin in this hole, and press for more than 4 seconds.
4. Take out the pin. All unit settings are restored to factory settings.
IVR COMMAND
Reset default factory settings using the IVR Prompt (Table 5):
1. Dial “***” for voice prompt.
2. Enter “099” and wait for “reset” voice prompt.
3. Enter the encoded MAC address (Look below on how to encode MAC address).
4. Wait 15 seconds and device will automatically reboot and restore factory settings.
Encode the MAC Address
1. Locate the MAC address of the device. It is the 12 digit HEX number on the bottom of the
unit.
2. Key in the MAC address. Use the following mapping:
0-9: 0-9
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A: 22 (press the “2” key twice, “A” will show on the LCD)
B: 222
C: 2222
D: 33 (press the “3” key twice, “D” will show on the LCD)
E: 333
F: 3333
For example: if the MAC address is 000b8200e395, it should be keyed in as “0002228200333395”.
NOTE:
1. Factory Reset will be disabled if the “Lock keypad update” is set to “Yes”.
2. If still have difficulties to get access to the device, pushing the reset button during booting up will
trigger the RECOVERY MODE, and device will use static IP 192.168.1.234/24. You may need a direct
connection to access the configuration page.
FCC Warning
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.
Any Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.
FCC 15.105 Class B
(b) For a Class B digital device or peripheral, the instructions furnished the user shall include the
following or similar statement, placed in a prominent location in the text of the manual:
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference in a residential installation. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no guarantee that interference
will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try
to correct the interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
—Consult the dealer or an experienced radio/TV technician for help.
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GXW42XX USER MANUAL
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