Sercomm WIAD2X ADSL VoIP Router User Manual IP819 VGA

Sercomm Corporation ADSL VoIP Router IP819 VGA

UserManual.wiki >

Sercomm >

WIAD2X User Manual >

user manual part 2 HTML Version

1. user manual part 1
2. user manual part 2

user manual part 2

Advanced Features

fields.

Log This determines whether packets covered by this rule are logged. Select

the desired action.

• Always - always log traffic considered by this rule, whether it

matches or not. (This is useful when debugging your rules.)

• Never - never log traffic considered by this rule, whether it matches

or not.

• Match - Log traffic only it matches this rule. (The action is deter-

mined by this rule.)

• Not Match - Log traffic which is considered by this rule, but does not

match (The action is NOT determined by this rule.)

Outgoing Rules (Outbound Services)

This screen is displayed when the "Add" or "Edit" button for Outgoing Rules is clicked.

Figure 46: Outbound Services Screen

Data - Outbound Rules Screen

Outbound Services

Service Select the desired Service or application to be covered by this rule. If the

desired service or application does not appear in the list, you must define

it using the "Services" menu option

Action Select the desired action for packets covered by this rule:

• BLOCK always

• BLOCK by schedule, otherwise Allow

• ALLOW always

• ALLOW by schedule, otherwise Block

Note:

• Any outbound traffic which is not blocked by rules you create will

be allowed by the Default rule.

802.11g ADSL VoIP Gateway User Guide

• ALLOW rules are only useful if the traffic is already covered by a

BLOCK rule. (That is, you wish to allow a subset of traffic which is

currently blocked by another rule.)

• To define the Schedule used in these selections, use the "Schedule"

screen.

LAN Users Select the desired option to determine which PCs are covered by this rule:

• Any - All PCs are covered by this rule.

• Single PC - Only the selected PC is covered by this rule.

If selected, you must select the PC.

PC - If using Single PC above, select the PC or Server on your LAN

which will be covered by this rule.

WAN Users These settings determine which packets are covered by the rule, based

on their source (WAN) IP address. Select the desired option:

• Any - All IP addresses are covered by this rule.

• Address range - If this option is selected, you must enter the "Start"

and "Finish" fields.

• Single address - Enter the required address in the "Single/Start"

fields.

Log This determines whether packets covered by this rule are logged. Select

the desired action.

• Always - always log traffic considered by this rule, whether it

matches or not. (This is useful when debugging your rules.)

• Never - never log traffic considered by this rule, whether it matches

or not.

• Match - Log traffic only it matches this rule. (The action is deter-

mined by this rule.)

• Not Match - Log traffic which is considered by this rule, but does not

match (The action is NOT determined by this rule.)

Advanced Features

User-defined Services

Services are used when creating Firewall Rules.

If you wish to create a firewall rule, but the required service is not listed in the "Service" list,

you can use this feature to define the required service or services. Once created, these services

will be listed in the "Service" list, and can be used when creating Firewall Rules.

Figure 47: Add Services Screen

Data - User-defined Services

Services

Existing Services This lists any Services you have defined. If you have not defined any

Services, this list will be empty.

Once you define some services, they will be listed here, and also

shown in the Service list used to create Firewall rules. (User-defined

services are at the end of the list, after the pre-defined services.)

Add Use this to open a sub-screen where you can add a new service.

Edit To modify a service, select it, and then click this button.

Delete Use this button to delete the selected service. You can delete any

services you have defined.

802.11g ADSL VoIP Gateway User Guide

Add/Edit Service

This screen is displayed when the Add or Edit button on the Services screen is clicked.

Figure 48 : Add/Edit Service

Data - Add/Edit Service

Services

Name If editing, this shows the current name of the Service.

If adding a new service, this will be blank, and you should enter a

suitable name.

Type Select the protocol used by the Service.

Start Port Enter the beginning of the port range used by the Service.

Finish Port Enter the end of the port range used by the Service.

Advanced Features

Options

This screen allows advanced users to enter or change a number of settings. For normal opera-

tion, there is no need to use this screen or change any settings.

An example Options screen is shown below.

Figure 49: Options Screen

Data - Options Screen

Internet

Respond to Ping • If checked, the Wireless Router will repond to Ping (ICMP) packets

received from the Internet.

• If not checked, Ping (ICMP) packets from the Internet will be

ignored. Disabling this option provides a slight increase in secu-

rity.

MTU Size Enter a value between 1 and 1500.

Note: MTU (Maximum Transmission Unit) size should only be changed

if advised to do so by Technical Support.

UPnP

UPnP • UPnP (Universal Plug and Play) allows automatic discovery and

configuration of equipment attached to your LAN. UPnP is by

supported Windows ME, XP, or later.

• If Enabled, this device will be visible via UPnP.

• If Disabled, this device will not be visible via UPnP.

Period Enter the desired value, in minutes. The valid range is from 1 to 1440.

Time to Live Enter the desired value, in hops. The valid range is from 1 to 255.

802.11g ADSL VoIP Gateway User Guide

Schedule

This Schedule can be used for the Firewall Rules and the URL filter.

Figure 50: Schedule Screen

Data - Schedule Screen

Schedule

Day Each day of the week can scheduled independently.

Session 1

Session 2 Two (2) separate sessions or periods can be defined. Session 2 can

be left blank if not required.

Start Time Enter the start using a 24 hr clock.

Finish Time Enter the finish time using a 24 hr clock.

Local Time

Time Zone In order to display your local time correctly, you must select your

"Time Zone" from the list.

Adjust for Daylight

Savings Time If your region uses Daylight Savings Time, you must manually check

"Adjust for Daylight Savings Time" at the beginning of the adjust-

ment period, and uncheck it at the end of the Daylight Savings

period.

Advanced Features

Use this NTP Server

If you prefer to use a particular NTP server as the primary NTP

server, check the checkbox "Use this NTP Server" and enter the

Server's IP address in the fields provided..

If this setting is not enabled, the default NTP Servers are used.

Current Time This displays the current time on the 802.11g ADSL VoIP Gateway, at

the time the page is loaded.

802.11g ADSL VoIP Gateway User Guide

Virtual Servers

This feature, sometimes called Port Forwarding, allows you to make Servers on your LAN

accessible to Internet users. Normally, Internet users would not be able to access a server on

your LAN because:

• Your Server does not have a valid external IP Address.

• Attempts to connect to devices on your LAN are blocked by the firewall in this device.

The "Virtual Server" feature solves these problems and allows Internet users to connect to your

servers, as illustrated below.

Figure 51: Virtual Servers

IP Address seen by Internet Users

Note that, in this illustration, both Internet users are connecting to the same IP Address, but

using different protocols.

To Internet users, all virtual Servers on your LAN have the same IP Address. This

IP Address is allocated by your ISP.

This address should be static, rather than dynamic, to make it easier for Internet users to con-

nect to your Servers.

However, you can use the DDNS (Dynamic DNS) feature to allow users to connect to your

Virtual Servers using a URL, instead of an IP Address.

Virtual Servers Screen

• The "Virtual Servers" feature allows Internet Users to access PCs on your LAN.

• The PCs must be running the appropriate Server Software.

Advanced Features

• For Internet Users, ALL of your Servers have the same IP address. This IP address is

allocated by your ISP.

• To make it easier for Internet users to connect to your Servers, you can use the "DDNS"

feature. This allows Internet users to connect to your Servers with a URL, rather than an IP

address. This technology works even if your ISP allocates dynamic IP addresses (IP ad-

dress is allocated upon connection, so it may change each time you connect).

Figure 52: Virtual Servers Screen

Data - Virtual Servers Screen

Servers

Servers This lists a number of common Server types. If the desired Server

type is not listed, you can create a Firewall Rule to achieve the same

effect as the Virtual Server function.

Properties

Enable Use this to Enable or Disable support for this Server, as required.

If Enabled, you must select the PC to which this traffic will be sent.

PC (Server) Select the PC for this Server. The PC must be running the appropri-

ate Server software.

For each entry, the PC must be running the appropriate

Server software. If the desired Server type is not listed, you

can define your own Servers, using the Firewall Rules.

Connecting to the Virtual Servers

Once configured, anyone on the Internet can connect to your Virtual Servers. They must use

the Internet IP Address (the IP Address allocated to you by your ISP).

e.g.

http://203.70.212.52

ftp://203.70.212.52

It is more convenient if you are using a Fixed IP Address from your ISP, rather than Dynamic.

However, you can use the Dynamic DNS feature to allow users to connect to your Virtual

Servers using a URL, rather than an IP Address.

802.11g ADSL VoIP Gateway User Guide

Note:

From the Internet, ALL Virtual Servers have the IP Address allocated by your ISP.

Advanced Features

VoIP

To use the VoIP feature requires the following:

• Standard Phone

A standard analogue Phone must be connected to the Phone socket.

• VoIP (SIP Server) Account

Generally, you will need a SIP Server account from a VoIP service provider. The account de-

tails should include the SIP Register address, SIP Proxy address, SIP register port, SIP

Proxy port, username, password and telephone number. (Many providers use the same

proxy server for both Proxy and Register.)

• VoIP Configuration

• Your VoIP service provider may perform the configuration for you.

• If not, refer to the following sections, which describe how to configure the Wireless

VoIP Gateway.

Refer to Chapter 7 - Operation and Status for details on using VoIP once configuration has

been completed.

VoIP Setup Screen

The VoIP setup screen is not on the menu; the VoIP link on the menu displays the VoIP Status

screen, described later in this chapter.

To view the VoIP Setup Screen:

1. Connect to the 802.11g ADSL VoIP Gateway using its IP address and the path to the VoIP

Setup screen ( /set_voip.htm ). For example, if the default IP address has not been changed,

use the following:

http://192.168.0.1/set_voip.htm

2. You will see the VoIP Settings screen, like the example below. This screen allows input of

the data necessary to establish a connection to the SIP Server.

Note that the Line 2 settings are the same as Line 1; only Line 1 is shown below.

Figure 53: VoIP Settings

802.11g ADSL VoIP Gateway User Guide

VoIP Settings

Local Service

SIP Local Port This port is used for peer-to-peer (direct) connections to another

device, when no SIP server is used.

Normally, this should be left at the default value. Any other devices

you wish to connect to must use the same port number.

SIP - Line 1 & Line 2

Enable Line1 Check this if you wish to connect to a SIP Server. If enabled, you

must provide the following data.

SIP Proxy address Enter the address of the SIP Proxy (Server) used by your VoIP pro-

vider.

SIP Proxy port Enter the port used for connections to the Server above.

SIP register ad-

dress Enter the address of the SIP Register (Server) used by your VoIP

provider. This may be the same server as the "Proxy" above.

SIP register port Enter the port used for "Register" connections to the Server above.

Expiry Time This sets the "Idle Timeout" for the SIP Server Login. An Idle connec-

tion will be terminated after this time period. Enter the desired value.

User Name Enter the login name for connections to the SIP Server.

Password Enter the password associated with the login name above.

Telephone

Number Enter the telephone number provided to you by the Vo IP Service

provider. If you have a range of numbers, enter the number you wish

to use for this line.

Display Name This name is used by the SIP Server, and may be visible to callers.

Advanced Features

VoIP Status Screen

This screen allows you to check the status of the connection to the SIP Server. It is accessed

via the VoIP link on the Advanced menu. Status information for each line is shown.

Figure 54: VoIP Status Screen

VoIP Status

Line 1 & Line 2

VoIP Status This indicates if VoIP is enabled or disabled.

Line Status Sometimes called "Hook Status"; this indicates the status on the

telephone line. ON indicates the receiver is "on-the-hook", while

OFF indicates the receiver is "off-the-hook".

Display Name This is the name you chose when you first opened your account.

Your "Display Name" will be visible to other individuals with caller

ID.

If your display name appears as "UNAVAILABLE", either your

VoIP account has not been established or your router has been

unable to connect to the VoIP Server.

Telephone Number The telephone number associated with this line. This is the tele-

phone number other people will use when they call you. This

number was assigned to you when you first established your

account. Each line can have a different telephone number.

If this displays "UNAVAILABLE", either your VoIP account has

not been established or this device was unable to connect to the

SIP server.

Registration Status This shows the status of the connection to the SIP Server. When

your router has successfully connected, the status will be dis-

played as "Success".

However, if you do not have VoIP account or if the router could

not connect to the VoIP server, the status will be displayed as

"Idle".

802.11g ADSL VoIP Gateway User Guide

PSTN Settings Screen

This screen has some additional settings related to the use of the PSTN line, assuming the

PSTN line is connected, which is strongly recommended.

Figure 55: PSTN Screen

PSTN Settings

PSTN Relay

PSTN Prefix The PSTN Relay allow certain calls to be diverted to the PSTN link,

even though VoIP is working properly.

This PSTN prefix means that any number beginning with this prefix

will be diverted to PSTN (the prefix itself is deleted, then the remainder

of the number is dialed via PSTN).

• If the prefix is a single character, that character must be *

• If the prefix is multiple characters, all characters after the 1st

character must be digits. The 1st char character can be * or a digit.

Note: When dialing, do not wait for a 2nd dial tone for the PSTN; there

is no 2nd dial tone. Just dial the PSTN prefix and the desired phone

number.

PSTN Fixed Relay This provides another method of diverting calls to the PSTN link. Any

Telephone numbers listed in this table will always be dialed via PSTN.

This feature should be used to direct emergency numbers to the

PSTN.

PSTN Rollover

Use PSTN… If enabled, then when VoIP is unavailable, all calls from the handset

will be sent via PSTN. (This is the same effect as occurs when the

power is off.) However, note that VoIP phone numbers (beginning

with are often unreachable via PSTN.

Normally, this setting should be Enabled.

Chapter 6

Advanced Administration

This Chapter explains the settings available via the "Administration" section

of the menu.

Overview

Normally, it is not necessary to use these screens, or change any settings. These screens and

settings are provided to deal with non-standard situations, or to provide additional options for

advanced users.

The available settings and features are:

PC Database This is the list of PCs shown when you select the "DMZ PC" or a

"Virtual Server". This database is maintained automatically, but

you can add and delete entries for PCs which use a Fixed (Static)

IP Address.

Config File Backup or restore the configuration file for the 802.11g ADSL VoIP

Ga teway. This file contains all the configuration data.

Logging & Email View or clear all logs, set E-Mailing of log files and alerts.

Diagnostics Perform a Ping or DNS Lookup.

Remote Admin Allow settings to be changed from the Internet..

Routing Only required if your LAN has other Routers or Gateways.

Upgrade Firmware Upgrade the Firmware (software) installed in your 802.11g ADSL

VoIP Gateway.

802.11g ADSL VoIP Gateway User Guide

PC Database

The PC Database is used whenever you need to select a PC (e.g. for the "DMZ" PC).

• It eliminates the need to enter IP addresses.

• Also, you do not need to use fixed IP addresses on your LAN.

However, if you do use a fixed IP address on some devices on your LAN, you should enter

details of each such device into the PC database, using the PC Database screen.

PC Database Screen

An example PC Database screen is shown below.

Figure 56: PC Database

• PCs which are "DHCP Clients" are automatically added to the database, and updated as

required.

• By default, non-Server versions of Windows act as "DHCP Clients"; this setting is called

"Obtain an IP Address automatically".

• The 802.11g ADSL VoIP Gateway uses the "Hardware Address" to identify each PC, not

the name or IP address. The "Hardware Address" can only change if you change the PC's

network card or adapter.

• This system means you do NOT need to use Fixed (static) IP addresses on your LAN.

However, you can add PCs using Fixed (static) IP Addresses to the PC database if required.

PC Configuration

Data - PC Database Screen

Known PCs This lists all current entries. Data displayed is name (IP Address) type.

The "type" indicates whether the PC is connected to the LAN.

Name If adding a new PC to the list, enter its name here. It is best if this

matches the PC's "hostname".

IP Address Enter the IP Address of the PC. The PC will be sent a "ping" to deter-

mine its hardware address. If the PC is not available (not connected, or

not powered On) you will not be able to add it.

Buttons

Add This will add the new PC to the list. The PC will be sent a "ping" to

determine its hardware address. If the PC is not available (not con-

nected, or not powered On) you will not be able to add it.

Delete Delete the selected PC from the list. This should be done in 2 situations:

• The PC has been removed from your LAN.

• The entry is incorrect.

Refresh Update the data on screen.

Generate Report Display a read-only list showing full details of all entries in the PC

database.

Advanced

Administration View the Advanced version of the PC database screen - PC Database

(Admin). See below for details.

802.11g ADSL VoIP Gateway User Guide

PC Database - Advanced

This screen is displayed if the "Advanced Administration" button on the PC Database is

clicked. It provides more control than the standard PC Database screen.

Figure 57: PC Database (Admin)

Data - Advanced PC Database

Known PCs This lists all current entries. Data displayed is name (IP Address) type.

The "type" indicates whether the PC is connected to the LAN.

PC Properties

Name If adding a new PC to the list, enter its name here. It is best if this

matches the PC's "hostname".

IP Address Select the appropriate option:

• Automatic - The PC is set to be a DHCP client (Windows: "Obtain

an IP address automatically"). The 802.11g ADSL VoIP Gateway

will allocate an IP address to this PC when requested to do so. The

IP address could change, but normally won't.

• DCHP Client - Reserved IP Address - Select this if the PC is set to

be a DCHP client, and you wish to guarantee that the 802.11g

ADSL VoIP Gateway will always allocate the same IP Address to

this PC.

Enter the required IP address.

• Fixed IP Address - Select this if the PC is using a Fixed (Static) IP

address. Enter the IP address allocated to the PC. (The PC itself

must be configured to use this IP address.)

PC Configuration

MAC Address Select the appropriate option

• Automatic discovery - Select this to have the 802.11g ADSL VoIP

Gateway contact the PC and find its MAC address. This is only

possible if the PC is connected to the LAN and powered On.

• MAC address is - Enter the MAC address on the PC. The MAC

address is also called the "Hardware Address", "Physical Ad-

dress", or "Network Adapter Address". The 802.11g ADSL VoIP

Gateway uses this to provide a unique identifier for each PC. Be-

cause of this, the MAC address can NOT be left blank.

Buttons

Add as New Entry

Add a new PC to the list, using the data in the "Properties" box.

If "Automatic discovery" (for MAC address) is selected, the PC will be

sent a "ping" to determine its hardware address. This will fail unless the

PC is connected to the LAN, and powered on.

Update Selected

PC Update (modify) the selected PC, using the data in the "Properties" box.

Clear Form Clear the "Properties" box, ready for entering data for a new PC.

Refresh Update the data on screen.

Generate Report Display a read-only list showing full details of all entries in the PC

database.

Standard Screen Click this to view the standard PC Database screen.

802.11g ADSL VoIP Gateway User Guide

Config File

This feature allows you to download the current settings from the 802.11g ADSL VoIP Gateway,

and save them to a file on your PC.

You can restore a previously-downloaded configuration file to the 802.11g ADSL VoIP Gateway,

by uploading it to the 802.11g ADSL VoIP Gateway.

This screen also allows you to set the 802.11g ADSL VoIP Gateway back to its factory default

configuration. Any existing settings will be deleted.

An example Config File screen is shown below.

Figure 58: Config File Screen

Data - Config File Screen

Backup Config Use this to download a copy of the current configuration, and store the

file on your PC. Click Download to start the download.

Restore Config This allows you to restore a previously-saved configuration file back to

the 802.11g ADSL VoIP Gateway.

Click Browse to select the configuration file, then click Restore to

upload the configuration file.

WARNING !

Uploading a configuration file will destroy (overwrite) ALL of the

existing settings.

Default Config Clicking the Factory Defaults button will reset the 802.11g ADSL VoIP

Gateway to its factory default settings.

WARNING !

This will delete ALL of the existing settings.

PC Configuration

Logs

The Logs record various types of activity on the 802.11g ADSL VoIP Gateway. This data is

useful for troubleshooting, but enabling all logs will generate a large amount of data and ad-

versely affect performance.

Since only a limited amount of log data can be stored in the 802.11g ADSL VoIP Gateway, log

data can also be E-mailed to your PC. Use the E-mail screen to configure this feature.

Figure 59: Logs Screen

Data - Logs Screen

Logs

Current Time The current time on the 802.11g ADSL VoIP Gateway is displayed.

Log Data Current log data is displayed in this panel.

Buttons There are three (3) buttons

• Refresh - Update the log data.

• Clear Log - Clear the log, and restart it. This makes new

messages easier to read.

• Send Log - E-mail the log immediately. This is only functional

if the E-mail screen has been configured.

802.11g ADSL VoIP Gateway User Guide

Logs

Include (Checkboxes) Use these checkboxes to determine which events are included in

the log. Checking all options will increase the size of the log, so it

is good practice to disable any events which are not really re-

quired.

• Attempted access to blocked sites - If checked, attempted

Internet accesses which were blocked are logged.

• Connections to the Web-based interface of this Router - If

checked, this will log connections TO this Router, rather than

through this Router to the Internet.

• Router operation - If checked, other Router operations (not

covered by the selections above) will be logged.

• Known DoS attacks and Port Scans - If checked, Denial of

Service attacks, as well as port scans, will be logged.

Syslog

Disable Data is not sent to a Syslog Server.

Broadcast on LAN The Syslog data is broadcast, rather than sent to a specific Syslog

server. Use this if your Syslog Server does not have a fixed IP

address.

Syslog If your Syslog server has a fixed IP address, select this option, and

enter the IP address of your Syslog server.

PC Configuration

E-mail

This screen allows you to E-mail Logs and Alerts. A sample screen is shown below.

Figure 60: E-mail Screen

Data - E-mail Screen

E-Mail Notification

Turn E-mail Notifi-

cation on Check this box to enable this feature. If enabled, the E-mail address

information (below) must be provided.

Send to this E-mail

address Enter the E-mail address the Log is to be sent to. The E-mail will also

show this address as the Sender's address.

Outgoing (SMTP)

Mail Server Enter the address or IP address of the SMTP (Simple Mail Transport

Protocol) Server you use for outgoing E-mail.

My SMTP Mail

Server requires

authentication

To stop spanners, many SMTP mail servers require you to log in to

send mail. In this case, enable this checkbox, and enter the login

information (User name and Password) in the fields below.

User Name If you have enabled "My SMTP Mail Server requires authentication"

above, enter the User Name required to login to your SMTP Server.

Password If you have enabled "My SMTP Mail Server requires authentication"

above, enter the password required to login to your SMTP Server.

802.11g ADSL VoIP Gateway User Guide

E-mail Alerts

Send E-mail alerts

immediately You can choose to have alerts E-mailed to you, by checking the

desired checkboxes. The Broadband ADSL Router can send an

immediate alert when it detects a significant security incident such as

• A known hacker attack is directed at your IP address

• A computer on the Internet scans your IP address for open ports

• Someone on your LAN (Local Area Network) tries to visit a

blocked site.

E-mail Logs

Send Logs Select the desired option for sending the log by E-mail.

• Never (default) - This feature is disabled; Logs are not sent.

• When log is full - The time is not fixed. The log will be sent when

the log is full, which will depend on the volume of traffic.

• Hourly, Daily, Weekly... - The log is sent on the interval speci-

fied.

• If Daily is selected, the log is sent at the time specified.

Select the time of day you wish the E-mail to be sent.

• If Weekly is selected, the log is sent once per week, on the

specified day, at the specified time.

Select the day and the time of day you wish the E-mail to be

sent.

Note:

If the log is full before the time specified to send it, it will be sent

regardless of the day and time specified.

PC Configuration

Diagnostics

This screen allows you to perform a "Ping" or a "DNS lookup". These activities can be useful in

solving network problems.

An example Network Diagnostics screen is shown below.

Figure 61: Network Diagnostics Screen

Data - Network Diagnostics Screen

Ping

Ping this

IP Address Enter the IP address you wish to ping. The IP address can be on your

LAN, or on the Internet. Note that if the address is on the Internet,

and no connection currently exists, you could get a "Timeout" error.

In that case, wait a few seconds and try again.

Ping Button After entering the IP address, click this button to start the "Ping"

procedure. The results will be displayed in the Ping Results pane.

DNS Lookup

Internet name Enter the Domain name or URL for which you want a DNS (Domain

Name Server) lookup. Note that if the address in on the Internet, and

no connection currently exists, you could get a "Timeout" error. In

that case, wait a few seconds and try again.

Lookup Button After entering the Domain name/URL, click this button to start the

"DNS Lookup" procedure.

Routing

Display Click this button to display the internal routing table. This information

can be used by Technical Support and other staff who understand

Routing Tables.

802.11g ADSL VoIP Gateway User Guide

Remote Administration

If enabled, this feature allows you to manage the 802.11g ADSL VoIP Gateway via the Internet.

Figure 62: Remote Administration Screen

Data - Remote Administration Screen

Remote Administration

Enable Remote

Management

Check to allow administration/management via the Internet. (To

connect, see below).

If Disabled, this device will ignore Administration connection at-

tempts from the Internet.

Current

IP Address

This is the current address you will use when accessing this device

from the Internet. To connect, see details and an example below.

Port Number Enter a port number between 1 and 65535. The default for HTTP

(Web) connections is port 80, but using port 80 will prevent the use of

a Web "Virtual Server" on your LAN. So using a different port num-

ber is recommended. The default value is 8080.

The port number must be specified in your Browser when you con-

nect. See the following section for details.

Access Permission

Allow Remote

Access

Select the desired option.

• Everyone - allow access by everyone on the Internet.

• Only This Computer - allow access by only one IP address. Enter

the desired IP address.

• IP Address Range - allow access from a range of IP addresses on

the Internet. Enter a beginning and ending IP address to define

the allowed range.

For security, you should restrict access to as few external IP ad-

dresses as practical.

PC Configuration

To connect from a remote PC via the Internet

1. Ensure your Internet connection is established, and start your Web Browser.

2. In the "Address" bar, enter "HTTP://" followed by the Internet IP Address of the 802.11g

ADSL VoIP Gateway. If the port number is not 80, the port number is also required. (After

the IP Address, enter ":" followed by the port number.)

e.g.

HTTP://123.123.123.123:8080

This example assumes the WAN IP Address is 123.123.123.123, and the port number is 8080.

3. You will then be prompted for the login name and password for this device.

802.11g ADSL VoIP Gateway User Guide

Routing

Overview

• If you don't have other Routers or Gateways on your LAN, you can ignore the "Routing"

page completely.

• If the 802.11g ADSL VoIP Gateway is only acting as a Gateway for the local LAN segment,

ignore the "Routing" page even if your LAN has other Routers.

• If your LAN has a standard Router (e.g. Cisco) on your LAN, and the 802.11g ADSL VoIP

Gateway is to act as a Gateway for all LAN segments, enable RIP (Routing Information Pro-

tocol) and ignore the Static Routing table.

• If your LAN has other Gateways and Routers, and you wish to control which LAN seg-

ments use each Gateway, do NOT enable RIP (Routing Information Protocol). Configure the

Static Routing table instead. (You also need to configure the other Routers.)

• If using Windows 2000 Data center Server as a software Router, enable RIP on the 802.11g

ADSL VoIP Gateway, and ensure the following Windows 2000 settings are correct:

• Open Routing and Remote Access

• In the console tree, select Routing and Remote Access , [server name], IP Routing,

RIP

• In the "Details" pane, right-click the interface you want to configure for RIP version 2,

and then click "Properties".

• On the "General" tab, set Outgoing packet protocol to "RIP version 2 broadcast", and

Incoming packet protocol to "RIP version 1 and 2".

Routing Screen

The routing table is accessed by the Routing link on the Administration menu.

Using this Screen

Generally, you will use either RIP (Routing Information Protocol) OR the Static Routing Table,

as explained above, although is it possible to use both methods simultaneously.

Static Routing Table

• If RIP is not used, an entry in the routing table is required for each LAN segment on your

Network, other than the segment to which this device is attached.

• The other Routers must also be configured. See Configuring Other Routers on your LAN

later in this chapter for further details and an example.

PC Configuration

Figure 63: Routing Screen

Data - Routing Screen

RIP

RIP Direction Select the desired RIP Direction.

RIP Version Choose the RIP Version for the Server.

Static Routing

Table Entries This list shows all entries in the Routing Table.

• This area shows details of the selected item in the list.

• Change any the properties as required, then click the "Edit"

button to save the changes to the selected entry.

Buttons

Add Add a new entry to the Static Routing table, using the data shown in

the "Properties" area on screen. The entry selected in the list is

ignored, and has no effect.

Edit Update the current Static Routing Table entry, using the data shown

in the table area on screen.

Delete Delete the current Static Routing Table entry.

Save Save the RIP setting. This has no effect on the Static Routing Table.

Configuring Other Routers on your LAN

It is essential that all IP packets for devices not on the local LAN be passed to the 802.11g

ADSL VoIP Gateway, so that they can be forwarded to the external LAN, WAN, or Internet. To

achieve this, the local LAN must be configured to use the 802.11g ADSL VoIP Gateway as the

Default Route or Default Gateway.

802.11g ADSL VoIP Gateway User Guide

Local Router

The local router is the Router installed on the same LAN segment as the 802.11g ADSL VoIP

Gateway. This router requires that the Default Route is the 802.11g ADSL VoIP Gateway itself.

Typically, routers have a special entry for the Default Route. It should be configured as follows.

Destination IP Address Normally 0.0.0.0, but check your router documentation.

Network Mask Normally 0.0.0.0, but check your router documentation.

Gateway IP Address The IP Address of the 802.11g ADSL VoIP Gateway.

Metric 1

Other Routers on the Local LAN

Other routers on the local LAN must use the 802.11g ADSL VoIP Gateway's Local Router as the

Default Route. The entries will be the same as the 802.11g ADSL VoIP Gateway's local router,

with the exception of the Gateway IP Address.

• For a router with a direct connection to the 802.11g ADSL VoIP Gateway's local Router, the

Gateway IP Address is the address of the 802.11g ADSL VoIP Gateway's local router.

• For routers which must forward packets to another router before reaching the 802.11g

ADSL VoIP Gateway's local router, the Gateway IP Address is the address of the intermedi-

ate router.

Static Routing - Example

Figure 64: Routing Example

For the 802.11g ADSL VoIP Gateway's Routing Table

For the LAN shown above, with 2 routers and 3 LAN segments, the 802.11g ADSL VoIP

Gateway requires 2 entries as follows.

Entry 1 (Segment 1)

Destination IP Address 192.168.1.0

Network Mask 255.255.255.0 (Standard Class C)

PC Configuration

Gateway IP Address 192.168.0.100 (802.11g ADSL VoIP Gateway's

local Router)

Metric 2

Entry 2 (Segment 2)

Destination IP Address 192.168.2.0

Network Mask 255.255.255.0 (Standard Class C)

Gateway IP Address 192.168.0.100

Metric 3

For Router A's Default Route

Destination IP Address 0.0.0.0

Network Mask 0.0.0.0

Gateway IP Address 192.168.0.1 (802.11g ADSL VoIP Gateway's IP

Address)

For Router B's Default Route

Destination IP Address 0.0.0.0

Network Mask 0.0.0.0

Gateway IP Address 192.168.1.80 (802.11g ADSL VoIP Gateway's

local router)

802.11g ADSL VoIP Gateway User Guide

Upgrade Firmware

The firmware (software) in the 802.11g ADSL VoIP Gateway can be upgraded using your Web

Browser.

You must first download the upgrade file, then select Upgrade Firmware on the Administration

menu. You will see a screen like the following.

Figure 65: Router Upgrade Screen

To perform the Firmware Upgrade:

1. Click the Browse button and navigate to the location of the upgrade file.

2. Select the upgrade file. Its name will appear in the Upgrade File field.

3. Click the Upload button to commence the firmware upgrade.

The 802.11g ADSL VoIP Gateway is unavailable during

the upgrade process, and must restart when the upgrade

is completed. Any connections to or through the 802.11g

ADSL VoIP Gateway will be lost.

Chapter 7

Operation and Status

This Chapter details the operation of the 802.11g ADSL VoIP Gateway and

the status screens.

Operation

Once both the 802.11g ADSL VoIP Gateway and the PCs are configured, operation is auto-

matic.

However, there are some situations where additional Internet configuration may be required.

Refer to Chapter 5 - Advanced Features for further details.

Status Screen

Use the Status link on the main menu to view this screen.

Figure 66: Status Screen

802.11g ADSL VoIP Gateway User Guide

Data - Status Screen

System

Device Name The current name of the Router. This name is also the "hostname"

for users with an "@Home" type connection.

Firmware Version The version of the current firmware installed.

ADSL

Modem Status This indicates the status of the ADSL modem comp onent.

DownStream

Connection Speed Displays the speed for the DownStream Connection.

UpStream Connection

Speed If connected, displays the speed for the Up Stream (upload) ADSL

Connection.

VC 1 Status The current VCI setting.

VPI The current VPI setting.

ADSL

Details Click this button to open a sub-window and view the details of

each VC (Virtual Circuit).

Internet (VC1)

Connection Method Displays the current connection method, as set in the Setup

Wizard.

Connection Status This indicates the current status of the Internet Connection

• Active - Connection exists

• Idle - No current connection, but no error has been detected.

This condition normally arises when an idle connection is

automatically terminated.

• Failed - The connection was terminated abnormally. This

could be caused by Modem failure, or the loss of the connec-

tion to the ISP's server.

If there is an error, you can click the "Connection Details" button

to find out more information.

Internet IP Address This IP Address is allocated by the ISP (Internet Service Provider).

If using a dynamic IP address, and no connection currently exists,

this information is unavailable.

Connection Details Click this button to open a sub-window and view a detailed

description of the current connection. Depending on the type of

connection, a "log" may also be available.

LAN

IP Address The IP Address of the 802.11g ADSL VoIP Gateway.

Network Mask The Network Mask (Subnet Mask) for the IP Address above.

DHCP Server This shows the status of the DHCP Server function. The value will

be "Enabled" or "Disabled".

MAC Address This shows the MAC Address for the 802.11g ADSL VoIP Gate-

way, as seen on the LAN interface.

Advanced Administration

Wireless

Name (SSID) If using an ESS (Extended Service Set, with multiple access points)

this ID is called an ESSID (Extended Service Set Identifier).

Region The current region, as set on the Wireless screen.

Channel This shows the Channel currently used, as set on the Wireless

screen.

Wireless AP This indicates whether or not the Wireless Access Point feature is

enabled.

Broadcast Name This indicates whether or not the SSID is Broadcast. This setting

is on the Wireless screen.

Buttons

ADSL Details View the details of each VC (Virtual Circuit).

Connection Details Click this button to open a sub-window and view a detailed

description of the current connection.

Attached Devices This will open a sub-window, showing all LAN and Wireless

devices currently on the network.

Refresh Screen Update the data displayed on screen.

802.11g ADSL VoIP Gateway User Guide

Connection Status - PPPoE & PPPoA

If using PPPoE (PPP over Ethernet) or PPPoA (PPP over ATM), a scren like the following

example will be displayed when the "Connection Details" button is clicked.

Figure 67: PPPoE Status Screen

Data - PPPoE/PPPoA Screen

Connection Time This indicates how long the current connection has been estab-

lished.

PPPoE Link Status This indicates whether or not the connection is currently estab-

lished.

• If the connection does not exist, the "Connect" button can be

used to establish a connection.

• If the connection currently exists, the "Disconnect" button

can be used to break the connection.

Negotiation This indicates the status of the PPPoE Server login.

IP Address The IP Address of this device, as seen by Internet users. This

address is allocated by your ISP (Internet Service Provider).

Network Mask The Network Mask associated with the IP Address above.

Buttons

Connect If not connected, establish a connection to your ISP.

Disconnect If connected to your ISP, hang up the connection.

Close Close this window.

Advanced Administration

Connection Details - Dynamic IP Address

If your access method is "Direct" (no login), with a Dynamic IP address, a screen like the

following example will be displayed when the "Connection Details" button is clicked.

Figure 68: Connection Details - Fixed/Dynamic IP Address

Data - Dynamic IP address

Internet

IP Address The current IP Address of this device, as seen by Internet users. This

address is allocated by your ISP (Internet Service Provider).

Network Mask The Network Mask associated with the IP Address above.

Default Gateway The IP address of the remote Gateway or Router associated with the

IP Address above.

DHCP Server The IP address of your ISP's DHCP Server.

DNS Server The IP address of the Domain Name Server which is currently used.

Lease Obtained

Lease Expires This indicates when the current IP address was obtained, and how

long before this IP address allocation (the DCHP lease) expires.

Buttons

Release If an IP Address has been allocated to the 802.11g ADSL VoIP Gate-

way (by the ISP's DHCP Server, clicking the "Release" button will

break the connection and release the IP Address.

Renew If the ISP's DHCP Server has NOT allocated an IP Address for the

802.11g ADSL VoIP Gateway, clicking the "Renew" button will at-

tempt to re-establish the connection and obtain an IP Address from

the ISP's DHCP Server.

Close Close this window.

802.11g ADSL VoIP Gateway User Guide

Connection Details - Fixed IP Address

If your access method is "Direct" (no login), with a fixed IP address, a screen like the following

example will be displayed when the "Connection Details" button is clicked.

Figure 69: Connection Details - Fixed/Dynamic IP Address

Data - Fixed IP address Screen

Internet

IP Address The IP Address of this device, as seen by Internet users. This ad-

dress is allocated by your ISP (Internet Service Provider).

Network Mask The Network Mask associated with the IP Address above.

Default Gateway The IP Address of the remote Gateway or Router associated with the

IP Address above.

DNS Server The IP Address of the Domain Name Server which is currently used.

Advanced Administration

Using VoIP

VoIP cannot be used until configuration has been completed. See the VoIP topic in Chapter 5 -

Advanced Features for details of VoIP configuration.

Normal Operation

• Your Internet connection should be configured to keep the Internet connection active as

much as possible (Keep Alive).

• Once logged in to the SIP server, you can dial any number using the procedure specified

by your VoIP Service provider.

• You can dial any number via the PSTN (provided the PSTN line is connected) by first

dialing the PSTN Prefix specified on the PSTN screen.

Note: Do not wait for a 2nd dial tone for the PSTN; there is no 2nd dial tone.

Just dial the PSTN prefix and the desired telephone numb er.

• If there is no Internet connection, you can still use the phone provided the PSTN setting

Use PSTN for all calls if VoIP is unavailable is Enabled. (This setting is on the PSTN

screen.) In this case, the call will go via PSTN and you will be charged accordingly by your

telephone company.

• If there is no power, you can still use the phone provided the PSTN line is connected. In

this case, the call will go via PSTN and you will be charged accordingly by your telephone

company.

Advanced Call Features

The 802.11g ADSL VoIP Gateway supports Call Waiting and 3-Way Conference calls.

Note: The instruction below refer to the "flash hook" button. This may be labeled "Recall" on

your phone. If you phone does not have a "flash hook" button, you can instead briefly press

the button or pad used to hang up the phone.

Call Waiting

Call waiting alerts you to another incoming call when you are already having a telephone

conversation, and allows you to answer the incoming call:

• Your phone will ring.

• Press "flash hook" to answer the incoming call. The other caller will be placed on hold.

• Press "flash hook" to swap between the two calls.

If you hang up when finished speaking to one caller, your phone will ring if the other caller is

still on-line.

Note: You can disable the Call Waiting feature by dialing *70

You will hear the dial tone and can dial the required number. This ensures the call will not be

interrupted by an incoming call.

3-Way Conference Calls

This feature allows you to speak to 2 other people simultaneously. To use this feature:

• Establish the first call.

• Press "flash hook"

• Dial the 2nd person

Appendix A

Troubleshooting

This Appendix covers the most likely problems and their solutions.

Overview

This section covers some common problems that may be encountered while using the 802.11g

ADSL VoIP Gateway and some possible solutions to them. If you follow the suggested steps

and the 802.11g ADSL VoIP Gateway still does not function properly, contact your dealer for

further advice.

General Problems

Problem 1: Can't connect to the 802.11g ADSL VoIP Gateway to configure it.

Solution 1: Check the following:

• The 802.11g ADSL VoIP Gateway is properly installed, LAN connections

are OK, and it is powered ON.

• Ensure that your PC and the 802.11g ADSL VoIP Gateway are on the

same network segment. (If you don't have a router, this must be the

case.)

• If your PC is set to "Obtain an IP Address automatically" (DHCP client),

restart it.

• If your PC uses a Fixed (Static) IP address, ensure that it is using an IP

Address within the range 192.168.0.2 to 192.168.0.254 and thus compati-

ble with the 802.11g ADSL VoIP Gateway's default IP Address of

192.168.0.1.

Also, the Network Mask should be set to 255.255.255.0 to match the

802.11g ADSL VoIP Gateway.

In Windows, you can check these settings by using Control Panel-

Network to check the Properties for the TCP/IP protocol.

Internet Access

Problem 1: When I enter a URL or IP address I get a time out error.

Solution 1: A number of things could be causing this. Try the following troubleshooting

steps.

• Check if other PCs work. If they do, ensure that your PCs IP settings are

correct. If using a Fixed (Static) IP Address, check the Network Mask,

Default gateway and DNS as well as the IP Address.

• If the PCs are configured correctly, but still not working, check the

802.11g ADSL VoIP Gateway. Ensure that it is connected and ON. Con-

nect to it and check its settings. (If you can't connect to it, check the

LAN and power connections.)

• Check the 802.11g ADSL VoIP Gateway's status screen to see if it is

Appendix A - Troubleshooting

working correctly.

Problem 2: Some applications do not run properly when using the 802.11g ADSL VoIP

Gateway.

Solution 2: The 802.11g ADSL VoIP Gateway processes the data passing through it, so it

is not transparent.

For incoming connections, you must use the Virtual Server or Firewall Rules

to specify the PC which will receive the incoming traffic.

You can also use the DMZ function. This should work with almost every

application, but:

• It is a security risk, since the firewall is disabled.

• Only one (1) PC can use this feature.

Wireless Access

Problem 1: My PC can't locate the Wireless Access Point.

Solution 1: Check the following.

• Your PC is set to Infrastructure Mode. (Access Points are always in

Infrastructure Mode)

• The SSID on your PC and the Wireless Access Point are the same.

Remember that the SSID is case-sensitive. So, for example "Workgroup"

does NOT match "workgroup".

• Both your PC and the 802.11g ADSL VoIP Gateway must have the same

setting for WEP. The default setting for the 802.11g ADSL VoIP Gateway

is disabled, so your wireless station should also have WEP disabled.

• If WEP is enabled on the 802.11g ADSL VoIP Gateway, your PC must

have WEP enabled, and the key must match.

• If the 802.11g ADSL VoIP Gateway's Wireless screen is set to Allow

Trusted PCs only, then each of your Wireless stations must have been

designated as "Trusted", or the Wireless station will be blocked.

• To see if radio interference is causing a problem, see if connection is

possible when close to the 802.11g ADSL VoIP Gateway.

Remember that the connection range can be as little as 100 feet in poor

environments.

Problem 2: Wireless connection speed is very slow.

Solution 2: The wireless system will connect at the highest possible speed, depending

on the distance and the environment. To obtain the highest possible connec-

tion speed, you can experiment with the following:

• 802.11g ADSL VoIP Gateway location.

Try adjusting the location and orientation of the 802.11g ADSL VoIP

Gateway.

• Wireless Channel

If interference is the problem, changing to another channel may show a

marked improvement.

• Radio Interference

Other devices may be causing interference. You can experiment by

switching other devices Off, and see if this helps. Any "noisy" devices

should be shielded or relocated.

802.11g ADSL VoIP Gateway User Guide

• RF Shielding

Your environment may tend to block transmission between the wireless

stations. This will mean high access speed is only possible when close

to the 802.11g ADSL VoIP Gateway.

Appendix B

About Wireless LANs

This Appendix provides some background information about using Wireless

LANs (WLANs).

Modes

Wireless LANs can work in either of two (2) modes:

• Ad-hoc

• Infrastructure

Ad-hoc Mode

Ad-hoc mode does not require an Access Point or a wired (Ethernet) LAN. Wireless Sta-

tions (e.g. notebook PCs with wireless cards) communicate directly with each other.

Infrastructure Mode

In Infrastructure Mode, one or more Access Points are used to connect Wireless Stations

(e.g. Notebook PCs with wireless cards) to a wired (Ethernet) LAN. The Wireless Stations

can then access all LAN resources.

Access Points can only function in "Infrastructure" mode, and

can communicate only with Wireless Stations which are set

to "Infrastructure" mode.

BSS/ESS

BSS

A group of Wireless Stations and a single Access Point, all using the same ID (SSID), form a

Basic Service Set (BSS).

Using the same SSID is essential. Devices with different SSIDs are unable to communicate with

each other.

ESS

A group of Wireless Stations, and multiple Access Points, all using the same ID (ESSID), form

an Extended Service Set (ESS).

Different Access Points within an ESS can use different Channels. In fact, to reduce interference,

it is recommended that adjacent Access Points SHOULD use different channels.

As Wireless Stations are physically moved through the area covered by an ESS, they will

automatically change to the Access Point which has the least interference or best performance.

This capability is called Roaming. (Access Points do not have or require Roaming capabilities.)

802.11g ADSL VoIP Gateway User Guide

100

Channels

The Wireless Channel sets the radio frequency used for communication.

• Access Points use a fixed Channel. You can select the Channel used. This allows you to

choose a Channel which provides the least interference and best performance. In the USA

and Canada, 11 channel are available. If using multiple Access Points, it is better if adjacent

Access Points use different Channels to reduce interference.

• In "Infrastructure" mode, Wireless Stations normally scan all Channels, looking for an

Access Point. If more than one Access Point can be used, the one with the strongest signal

is used. (This can only happen within an ESS.)

• If using "Ad-hoc" mode (no Access Point), all Wireless stations should be set to use the

same Channel. However, most Wireless stations will still scan all Channels to see if there is

an existing "Ad-hoc" group they can join.

WEP

WEP (Wired Equivalent Privacy) is a standard for encrypting data before it is transmitted.

This is desirable because it is impossible to prevent snoopers from receiving any data which is

transmitted by your Wireless Stations. But if the data is encrypted, then it is meaningless

unless the receiver can decrypt it.

If WEP is used, the Wireless Stations and the Access Point must have the same settings for

each of the following:

WEP Off, 64 Bit, 128 Bit

Key For 64 Bit encryption, the Key value must match.

For 128 Bit encryption, the Key value must match

WEP Authentication Open System or Shared Key.

WPA-PSK

WPA-PSK is another standard for encrypting data before it is transmitted. This is a later stan-

dard than WEP (Wired Equivalent Privacy), and provides greater security for your data. Data is

encrypted using a 256Bit key which is automatically generated and changed often.

If all your Wireless stations support WPA-PSK, you should use this instead of WEP.

If WPA-PSK is used, the Wireless Stations and the Access Point must have the same settings

for each of the following:

WPA PSK

(Pre-shared Key) Enter the same value on every station and the AP. The PSK

must be from 8 to 63 characters in length. The 256Bit key

used for the actual encryption is derived from this key.

Encryption The same encryption method must be used. The most

common encryption method is TKIP. Another widely-

supported method is AES.

Appendix B - About Wireless LANs

101

Wireless LAN Configuration

To allow Wireless Stations to use the Access Point, the Wireless Stations and the Access Point

must use the same settings, as follows:

Mode On client Wireless Stations, the mode must be set to "Infrastructure".

(The Access Point is always in "Infrastructure" mode.)

SSID (ESSID) Wireless Stations should use the same SSID (ESSID) as the Access

Point they wish to connect to. Alternatively, the SSID can be set to

"any" or null (blank) to allow connection to any Access Point.

Wireless

Security The Wireless Stations and the Access Point must use the same settings

for Wireless security. (None, WEP, WPA-PSK).

WEP: If WEP is used, the Key size (64Bit, 128Bit), Key value, and

Authentication settings must be the same on the Wireless Stations and

the Access Point.

WPA-PSK: If WPA-PSK is used, all Wireless Stations must be set to

use WPA-PSK, and have the same Pre-shared Key and encryption

system.

For Ad-hoc networks (no Access Point), all Wireless stations must use

the same security settings.

102

Appendix C

Specifications

802.11g ADSL VoIP Gateway

Model 802.11g ADSL VoIP Gateway

Dimensions 183mm(W) * 125mm(D) * 31mm(H)

Operating Temperature 0° C to 40° C

Storage Temperature -10° C to 70° C

Network Protocol: TCP/IP

ADSL Interface 1 * RJ11 connector

T1.413, G.DMT, G.lite, multi-mode

Ethernet Interface: 1 * 10/100BaseT (RJ45) LAN port

Phone Line Interface 1 * RJ11 connector for PSTN Phone Line

2 * RJ11 connector for standard analog telephone

LEDs 16

Power Adapter 15 V DC External

Wireless Interface

Standards IEEE802.11b, IEEE802.11g WLAN

Frequency 2.4 to 2.4835GHz (Industrial Scientific Medical Band )

Channels Maximum 14 Channels, depending on regulatory authorities

Modulation CCK, DQPSK, DBPSK, OFDM/CCK

Data Rate Up to 54 Mbps (802.11g)

Security WEP 64Bit, WPA 128Bit, WPA-PSK, MAC address checking

Output Power 13dBm (typical)

Receiver Sensitivity -80dBm Min.

Regulatory Approvals

FCC Statement

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 communica-

tions. 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 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.

To assure continued compliance, any changes or modifications not expressly approved by the

party responsible for compliance could void the user's authority to operate this equipment.

(Example - use only shielded interface cables when connecting to computer or peripheral

devices).

FCC Radiation Exposure Statement

This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with a minimum distance of 20

centimeters between the radiator and your body.

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.

This transmitter must not be co-located or operating in conjunction with any other antenna or

transmitter.

The antennas used for this transmitter must be installed to provide a separation distance of at

least 20 cm from all persons and must not be co-located or operating in conjunction with any

other antenna or transmitter.

Channel

The Wireless Channel sets the radio frequency used for communication.

•Access Points use a fixed Channel. You can select the Channel used. This allows you to

choose a Channel which provides the least interference and best performance. In the USA

and Canada, 11 channel are available. If using multiple Access Points, it is better if adjacent

Access Points use different Channels to reduce interference.

• In "Infrastructure" mode, Wireless Stations normally scan all Channels, looking for an

Access Point. If more than one Access Point can be used, the one with the strongest

signal is used. (This can only happen within an ESS.)

• If using "Ad-hoc" mode (no Access Point), all Wireless stations should be set to use the

same Channel. However, most Wireless stations will still scan all Channels to see if there

is an existing "Ad-hoc" group they can join.

CAUTION:

1) To comply with FCC RF exposure compliance requirements, a separation

distance of at least 20 cm must be maintained between the antenna of this

device and all persons.

2) This transmitter must not be co-located or operating in conjunction with

any other antenna or transmitter.

Sercomm WIAD2X ADSL VoIP Router User Manual IP819 VGA

Sercomm Corporation ADSL VoIP Router IP819 VGA

Contents

user manual part 2

Navigation menu

Namespaces

Views

Navigation