I've actually gotten calling to work at this point and have established 2-way audio, but I had to disable RTP Relay in Brekeke PBX.

I'm having a problem where the call drops after approximately 3 minutes.

1. Brekeke Product Name and version: Brekeke SIP Server 2.4.7.3/286.1 2. Java version: 3. OS type and the version: Windows Server 2008R2 4. UA (phone), gateway or other hardware/software involved: Sangoma NetBorder Express (T1 Interface) 5. Select your network pattern from http://www.brekeke-sip.com ...