Calls SIP2SIP, NAT problem, RTPProxy needed?

Hase
2010-05-20
2013-05-09
  • Hase
    Hase
    2010-05-20

    I set up openser. It works perfectly if I send the traffic to a PSTN gateway, I have sound both ways, no problem. If I do a sip call to an other sip phone, I have no sound, both ways. It only works if both sip phones are in the same network (even if the SER server is in the web). I think the connection for the voice goes directly from sipphone to sipphone. Can it work without a mediaproxy?