A customer asks me how to integrate SIP protocol on IOS gateways to connect his IP communication infrastructure to VoIP service providers and carrirer.
He has already a system with callmanager and IOS Voice Gateways but he whant to add SIP and reduce traditional PSTN lines, using the Internet.
How i can implement it on Cisco IOS Voice Gateways?
Here's an example configuration using CME, but the concepts are the same. The other piece would be to have the gateway/route group/route list/route pattern configuration in Callmanager to point to the H.323 gateway.
Hope this helps. If so, please rate the post.