Configuring VOIP on the BT Voyager 2500V

This article describes how you can configure VOIP on the BT Voyager 2500V to work with ANY VOIP provider. This will enable you to plug an ordinary telephone into your 2500 and use it to make VOIP calls using Freespeech, Vonage, or whoever you want. The process uses TELNET which may be unfamiliar to a lot of users. However, if you follow the steps carefully you will find it straightforward. If you make mistakes, the very worst that can happen is that you will have to reset your router. You will do no physical damage to the router so don't be afraid!

Before you can run this process, you have to make sure you have the correct firmware. This process works with the CLUB firmware. If you haven't already upgraded to this, check out the following link, being sure to select the 2500 Club firmware.

Unlocking the BT Voyager 2500V

Ok, so if you navigate to http://192.168.1.1 you should get a screen like this:

The firmware version should read Version 3.30d.c as shown. If it doesn't yuo need to do the firmware upgrade above.

We have actually written a program to simplify the following process. If that is available we suggest you use that. If it is not available then you need to get your hands dirty. The following instructions will show you what to do. We strongly suggest you read through them first before actually following any of the instructions, as you will need to have some information from your VOIP provider in order to complete the process.

To configure the router to use VOIP with any provider we need to use Telnet. In order to load Telnet we must first open a command window. To do this in XP, click START and select RUN. You will get the dialog below:

Type CMD as shown and click OK. If you are using Vista, click the Vista START and type CMD in the search box. The result will be the same.

In either case, you should get the screen below. This is called a command prompt.

Type the following and press ENTER:

telnet 192.168.1.1

You should now get the screen shown below:

Enter router admin username and password. If you have not changed them, it should be as follows:

Assuming you have entered the details correctly, you will get the following screen:

I hope you weren't expecting anything spectacular to happen!

Anyway, from this humble beginning we will have VOIP configured in a jiffy.

The first task we will perform is to view the current VOIP settings. VOIP is configured using the VOICE command. So to see what the current configuration, just type:

voice show

As you can see, the router is currently set to use bbphoneservice.com as its VOIP provider. This is a non-existent service which is just the router's way of saying it isn't yet configured. It is useful though because it shows that the default (and correct in most cases) port to use is 5060.

Now, let's find out what VOICE commands are available for us to use. Type the following and press ENTER:

voice ?

That screenshot is a bit messy so I have stripped the data and pasted it below.

> voice ? 
Command syntax: 

voice --help                                            
-  show the voice command syntax 

voice show                                                
-  show the voice parameters 

voice start                                              
-  start the voice application 

voice stop                                                
-  stop the voice application 

voice restart                                      
-  restart the voice application 

voice set interface   
-  set interface name used by the voice application (br0, ppp_8_35_1, etc.) 

voice set registrar     
-  set IP address and port for SIP registrar 

voice set obproxy           
-  set IP address and port for outbound SIP proxy 

voice set proxy             
-  set IP address and port for SIP proxy 

voice set phone1         
-  set phone 1 configuration 

voice clear phone1                                      
-  clear phone 1 configuration 

voice set phone2         
-  set phone 2 configuration 

voice clear phone2                                      
-  clear phone 1 configuration 

voice set prefcodec               
-  set the preferred codec (auto, G711U, G711A, G723, G726, G729) 

voice set country                 
-  set PSTN Country 1:US 2:EU 3:UK 4:NL 5:FR 6:SW 7:SE 8:BE 9:JP 10:CN 11:FI 12:GE 18:NZ 19:AU 

voice set pstnPrefix         
-  set PSTN prefix in order to switch from VoIP status to PSTN mode 

All that stil looks a bit scary. However, we only really need a subset of those commands. We will be using the following:

voice set interface   
-  set interface name used by the voice application (br0, ppp_8_35_1, etc.) 

voice set registrar     
-  set IP address and port for SIP registrar 

voice set obproxy           
-  set IP address and port for outbound SIP proxy 

voice set proxy             
-  set IP address and port for SIP proxy 

voice set phone1         
-  set phone 1 configuration 

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