I'm wondering how I can configure a Cisco router in a lab to integrate into an existing voip infrastructure running SIP. It's a 2610 XM with fxs ports as well as running CCME sitting behind a NAT router into the corporate network.
The only details i've been provided are the SIP Domain, SIP proxy server as well as a username and password for authentication.
I've tried different combinations of sip server and registrar within SIP-UA config and i've tried binding the media and setup packets to the inside global address of the NAT but i'm not having any luck registering or initiating a call.
Any help would be greatly appreciated!