So.. I've been using OpenSER for about 2 years now and it's still mostly a mystery to me. Just about everything I have done with it has been my observation and reverse engineering.

Apart from the API specs on openser.org, which are NOT documentation, does any good documentation exist?
Are there any books on SER/OpenSER?

Where can I find good documentation with examples on the use of avpops? Why append_branch is required, and other mysteries?

Doug.