Our legacy 'C' VoIP platform will be removed from service on March 2nd 2015.
This platform is now old, tired and we have a better VoIP platform: our FireBrick-based 'Voiceless' platform.
We have created a wiki page with details for customers needing to move platforms: http://wiki.aa.org.uk/VoIP_-_Moving_Platform
We will be contacting customers individually by email later in the year, but we'd recommend that customers start moving now. The wiki page above explains how to move, and in most cases it is simply changing the server details in your VoIP device. Please do contact Support for help though.