Case 2. BT ADSL Routers IG2700 (BT Business Hub

Issue 3 Page 1 of 16Provided by BT Versatility STC IG2700_ADSL_router_settings_Case_2.pdf

Case 2. BT ADSL Routers IG2700 (BT Business Hub) configurationto allow a BT Versatility Broadband Module (BBM) IP Gatewayconnection for IP Extensions (VoIP) when the Broadband line

provides multiple Static no NAT IP Addresses

Introduction.The 2WIRE IG2700 ADSL routers must be configured to allow VoIP traffic to pass from it to the BTV BBMIP Gateway. In the default configuration the VoIP traffic does not pass successfully and VoIP service isseverely restricted. Configuring the IG2700 for this purpose is not a part of the BBM installation and configuration. BT will notundertake to do this work unless instructed to do so by the customer and the work is then charged for inaddition to the scheduled work. The information provided here is for guidance only.The IG2700 network security (Firewall) is the responsibility of the customer and no changes to this mustbe made without the customers permission.(This instruction assumes Internet access is available on the IG2700 LAN and restrictions in place are theIG2700 default restrictions.)Follow the separate instruction to configure the BBM (BTV VoIP using the IP gateway) and connect theBBM and the IG2700 as shown above.

Note:It is assumed the 2Wire router is the DHCP server. In situations where the 2Wire router is not the DHCPserver this Case Study cannot be followed. In such situations we cannot advise a suitable connectionmethod.

Technical Support Information

BTVBroadband

Module(BBM)

CustomerPC’s,

Servers,and other

LANconnections

RJ45connecting

cable

2Wire IG2700ADSL

Router

ADSLline


There are three steps to configure the 2WIRE router: -

1. Edit the Firewall settings.2. Edit the Local Network Settings3. Allocate the public IP address to the BBM

IP Extensions - Configuring the 2WIRE IG2700 The IG2700 can be programmed from a PC connected on the LAN using a Browser application (e.g.Internet Explorer). See the IG2700 User guide for full information on connection and configuration. Thisinstruction only covers information relevant to configuring the IG2700 to allow VoIP (IP Extension and IPTrunks) traffic through to the BTV BBM.On a Browser on a PC connected to the LAN on the IG2700 connect to the IG2700 programminginterface. This can be done by either typing http://home/ or by typing the IP address of the IG2700Default Gateway on the Browser address line and selecting Go.

The following page will be displayed:

1. Edit the Firewall settings

• Select the Firewall Icon option (at the top of the page) and the following page will be displayed.


• Select Allow Applications, Pinholes and DMZ Mode.

The following page will be displayed.


• Scroll down the page to Edit firewall settings for this computer.

Select Add a new user-defined application


• Create a profile name in the Application Name: field, for example ‘IP Extension’• Now enter the required VoIP ports that require opening. For IP Extensions the following ports are

used: UDP 5100 to 6200 and TCP 5566. • In the Port (or Range): From 5100 to: 6200, select UDP, leave other fields at default and select

Add to List

• Now Add Port 5566, From 5566 to 5566 and select TCP, leave other fields at default and selectAdd to List

You may be required to enter the BT Business Hub password, enter the password. (For details ofthe password consult the BT Business Hub user guide on page 49).

The following page will be displayed


• Select Back



• Choose the IP address for the BBM, in this example 192.168.1.64• Select ‘User-defined’ option, this should reset the screen and show the following page.


• Select ‘IP Extension’ and use the Add button to add the User-defined filter to the HostedApplications

• Select the Save option at the bottom of the page

This automatically changes the Firewall settings for this computer from: - Maximum protection to Allow individual application(s).



From the Home page viewing the device details for the BBM IP address will show the details as:

The Port filters have now been allocated to the BBM connection through the IG2700.


2. Edit the Local Network Settings

From the Home page select the Broadband icon


Select Link Configuration and scroll down the page to Public IP Addresses.


• Enable the Add Additional Network Option

• Input the router external IP address (this is normally the Default Gateway IP address) and the subnetmask as shown below.

The no NAT (public) IP address information supplied from BT Broadband may look like thefollowing:-Network IP Address: 217.39.169.8Start IP Address: 217.39.169.9Last IP Address: 217.39.169.13Router IP Address: 217.39.169.14Subnet size: 8 (Total number of addresses)

From this the User IP addresses are 217.39.169.9 to 217.39.169.13.The Default Gateway IP address is 217.39.169.14.Because the Subnet size is 8 the Subnet Mask is 255.255.255.248 (if the Subnet size was 16 theSubnet Mask would be 255.255.255.240)

These addresses are used as examples only and are not valid IP addresses.


Select Save and the following page will be displayed.


3. Allocate the Public IP address to the BBM

There is more than one way to allocate the address, see the 2Wire user guide for full details, thefollowing describes one of the methods.From the above page select LAN and on the next page select the NAT & Address Allocation option

• Select the BBM by IP address (in this example 192.168.1.64)


For Address Assignment, from the dropdown options select Public (Select WAN IP Mapping).


For WAN IP Mapping, from the dropdown options select the Public IP address you wish to allocate tothe BBM WAN.

Select Save.

Restart the BBM and it will be dynamically configured with the public IP address details as assigned.The BBM Status Screen should now show the public IP address allocated

On the 2 wire Home page the BBM will now show as:


This concludes the programming.

Documents

Case 2. BT ADSL Routers IG2700 (BT Business Hub