I’m heaving difficulties seting up VoiceBlue GSM gateway and FreePBX.
I can make call thru VoiceBlue and I can receive one too. But I can’t hear anything (not just dialtone). I did tcpdump on interface and RTP packets are showing just fine (from VoiceBlue to my softphone and back), but there is no sound.
The same as you. Calls from and to GSM network are working. If I make a call from GSM network my extension is ringing, but when I answer that call, neither of us are hearing nothing. If I debug rtp I can see traffic between extension and VoiceBlue, so voice should be working. But it’s not. In other way around (extension to GSM network)… Same thing.