We have SIP working now. The Skip2PBX developers wrote a patch today to cope with the BCM output and we can now call from the BCM through the Skip2PBX SIP gateway.
There is another issue though; When dialling through our test rig of a Trixbox - Skip2PBX - Skype, everything is fast and normal. For, BCM - Skip2PBX - Skype, although the call qulaity os actually better, there is a minute time lose on the call so the respondent may say 'Hello' but I only hear the 'o'... It fine after that but you may miss the hello for a fast talker and think that there is no one on the end of the line....Any ideas?