Hardware is a pepwave with Firmware 6.3.1.
Problem ist RTP-Packets. Having a telephon system from manufactur Agfeo (Germany).
Incoming calls a no problem. But outgoing calls. As you call out, its ringing, you pick up
the phone call and hear nothing.
A trace showed, that on outgoing calls, not rtp packets are coming in.
Is it possible to select all rtp-protocoll packets beeing forwarded to the telephon system?
Is it possible to do an DMZ with the pepwave? I was not able to found a feature like that.