asterisk_nicht_mehr Posted July 12, 2009 Report Share Posted July 12, 2009 Hello, can someone help me troubleshoot a ringback problem. After a Dreytek modem died on me I installed a Netgear. I am good on outgoing but callers are getting no rignback tone. 180 is not doing it with the new modem. Could it be an tcp or udp problem? I need to get this resolved today if possible Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted July 12, 2009 Report Share Posted July 12, 2009 can someone help me troubleshoot a ringback problem. After a Dreytek modem died on me I installed a Netgear. I am good on outgoing but callers are getting no rignback tone. 180 is not doing it with the new modem. Could it be an tcp or udp problem? Make sure that anything called "SIP ALG" or "UPnP" is turned off on the router. Or use TLS to tunnel through the router that might mess with the SIP packets. I also used a netgear but had no problems. I guess the models are changing quickly, so I am not sure if that helps. Check if you see the 180 response on the PBX (SIP logging). Last resort would be to use Wireshark on the PBX to see what the PBX receives. Quote Link to comment Share on other sites More sharing options...
iActive Posted March 4, 2011 Report Share Posted March 4, 2011 Getting the same issue recently install a netgear router behind a smc cable modem in hopes of better routing. I can call extensions and even outside numbers the remote phone will ring. however I do not hear ring back nor can either party hear each other when the call is answered. Quote Link to comment Share on other sites More sharing options...
Vodia PBX Posted March 4, 2011 Report Share Posted March 4, 2011 I would guess that the NAT table is full. Some routers have only 32 entries and each registration takes one (UDP or TCP); each call takes two UDP ports (RTP and RTCP). And you probably have other devices behind NAT as well. Quote Link to comment Share on other sites More sharing options...
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