I am hoping someone out there can help.
I am trying to connect my Cisco UC320w phone system to my DVX SIP Trunk.
I have got to the point where I the Phone system is saying the SIP Trunk is 'Registered', and the Xport site is saying the interface is connected.
I can dial out, and the receiving party can pick up the call, however there is no audio to either party, and the call eventually drops.
Nor can I receive any incoming calls, and according to WorldExchange, the traffic is not hitting my phone system.
I have a Cisco X3000 router and have set up port forwards on TCP/UDP 5060 and UDP 35384-37384, however it doesnt seem to be working. Have I missed a vital step somewhere, is it possible that this router is not going to do what I want it to do?
The router allows me to set up Port Forwarding, and Port Range Triggering, and also allows me to set up a DMZ device.
Could this be a NAT problem?
Please help as I am at a standstill.