Thanks all for the help and pointers everyone.I've managed to build SentryPeer (https://github.com/SentryPeer/SentryPeer/tree/debian-packaging/debian). I'm just going through debuild now to clean up lintian issues and pbuilder runs for missing depends.Suprisingly enjoyable and "dh" in the rules file does a ton of work for you!I've emailed the VoIP packaging group to see if I can help now that I know some more. I'd like to look after the libosip2 package too as SentryPeer requires it and it looks like it's not been updated in 6 years?Thanks again everyone.Gavin.