Have recently created SIP Trunks as a means of an intercluster trunk to a third party telephone system.
Have created Route Pattern, Route List and Route Group which contains 2 SIP Trunks. Also created New Non Secure SIP Trunk Profile for the SIP Trunks. SIP Trunks using the Standard SIP Profile
My telephone is a 7965 using SCCP.
Route pattern 443X created to use SIP Trunk using standard port of 5060.
Have checked partitions and calling search spaces and these look correct.
Problem is that I receive engaged tone when dialling any 4-digit 443X extension.
CUCM version 7.1.3
Screenshot of SIP Trunk attached.
Thanks for any assistance.
Solved! Go to Solution.