Talk:PBXs
From VoIP.ms Wiki
Cisco IOS
I have added a Cisco IOS section for configuration of Cisco voice-enabled routers, using username/password authentication. The dial plan is extremely basic, but there's plenty of help around the rest of the internet for people to figure out a good dial plan.
The configuration shown should work on any voice-enabled platform running IOS 15.1(3)T and higher, such as the 2800, 3800, 2900, and 3900 series routers.