I successfully set VOIP FPL on a BT Voyager 2500v using this guide:
http://www.puzbie.co.uk/shopdata/gg_blo ... 99&cat=400
and replacing the registrar/obproxy/proxu by voip.freephoneline.ca and setting the codec to G729a.
I am able to successfully make outgoing calls. However, when I call the FPL number, sometimes it goes straight to voicemail and sometimes it rings and goes to a busy tone. PS. the phone attached to the VOIP router never rings.
Am I missing something ???