Question

A user experiences an issue when calling a particular PSTN number. An engineer investigates the problem on a Cisco UCM server and a Cisco Unified Border Element router and finds that the ITSP rejects the outbound SIP INVITE with a `422 Session Timer Too Small` SIP message. What must the engineer do to fix the issue?

Accepted Answer

B. Increase the SIP Session Expires Timer service parameter in Cisco UCM.

Answer

Increase the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer.

Answer

Decrease the Min-SE SIP header timer on the appropriate Cisco Unified Border Element dial peer.

Answer

Decrease the SIP Session Expires Timer service parameter in Cisco UCM.