Hi, imagine OpenSer changes the SDP ("use_media_proxy()") and the call is rejected by the callee.
Then a "faiure_route" is runned in which we want to send the INVITE to a voicemail server. When we do the "append_branch()" the SDP is not the original but the previously modified.
Is it the expected behaviour? what about if I want to use the original SDP for the second branch? (imagine my voicemail server has comedia support for example).