I like to have Asterisk 1.4 running for all kind of codecs. Asterisk just has to to passthrough the RTP without re-encoding or re-transcoding.
DTMF will be no issue, because I don’t use it.
Re-invite is no option for me because I use a server with four LAN port in several subnets with and without NAT.
I tried some patches but none of them works.
Is there a simple configuration change or patch to establisch this?