Stun on Cisco Call Manager Express - Behind NAT Issue

djmalik
Joined: Sun 10 of Aug, 2008

Stun on Cisco Call Manager Express - Behind NAT Issue

Posted:Wed 25 of Mar, 2009 (16:11 UTC)
Hi

I am using a Cisco Call Manager Express (Cisco 2821 Router). I am connecting to it using the WAN link (REAL IP), say extension 500 as DID, which I have kept as source IP in telephony-service

The issue is that if I connect to my call manager using the WAN link and if I am behind, there is NO AUDIO at all for outgoing calls (i.e. from call manager to PSTN)

The incoming calls (from PSTN to call manager) never gets connected as I am behind

So is there a way to solve the problem like by enabling STUN or something like that?

Please help me as I have to finish off a project and the customer is getting on my nerves.

Thanks
malik