Hope, thanks for the reply. I did find this document earlier and had a hard time figuring which resolution was applicable to my issue. The trunk doesn't go through the avaya switch/signaling group so I couldn't add the SDP there as in example one on the Avaya side. I tryed to add it as in option two ...

1. Brekeke Product Name and Version: 2.4.8.6 2. Java version: 3. OS type and the version: 4. UA (phone), gateway or other hardware/software involved: X-lite softphone, Avaya oneX communicator 5. Your problem: We have a SIP trunk built from a Avaya Session Manager 6.3 to the Brekeke server. I can ...