I have an account with pbxes and used my FPL config to setup a trunk.
I can make outgoing call and can see that it works all the time but I am having an issue wiht incoming call.
It doesn't really work. If I call my FPL number eventually I get the standard FPL voicemail message so obviously it works
the problem is that the extension I created on the pbxes doesn't ring
or to be more precise sometime the call is actually being forwarded to my extension and if answered the call is setup.
But then I call again 10 minutes later and it doesn't ring.
I guess it is a registration issue between pbxes.com and freephoneline but I can't find how to solve it

So has anyone managed to use FPL with pbxes.com or a similar service?