Intro… While H.323 and MGCP are primarily used for Cisco Voice Gateway connections, SIP trunking is used for just about everything else. In this Nugget, Jeremy walks through the configuration of SIP Trunks (and discusses connections to ITSPs for lab environments) and Intercluster trunks (which connect multiple CUCM clusters).
UCM to UCM
Add new -> ICT Non Gatekeeper Controlled
*ICT Protocol = Cisco proprietary
All the way down to the bottom…. Remote CUCM Information = IP address (Multiple Subs)
ICT becomes a gateway and can be used in a Route Pattern to send digits to.
SIP Trunk to ITSP
Same as ICT but with SIP
*MakeCUCM work with your SIP provider
Add SIP Security Profile
Add SIP Profile – Tweak timers
Add Destination IP address of ITS