Question

A CUBE connects CUCM to an ITSP. Calls forwarded by internal users are being rejected by the ITSP with a 400 Bad Request. A SIP debug shows that outbound INVITEs contain a Diversion header populated with an internal E.164 number that the ITSP does not recognize as a valid subscriber. The provider has confirmed they simply want the Diversion header removed entirely from all outbound INVITEs on the ITSP-facing trunk. Which configuration correctly accomplishes this on CUBE?

Accepted Answer

Create a SIP profile with 'request INVITE sip-header Diversion remove' and apply it outbound under the ITSP-facing dial peer with 'voice-class sip profiles <n>'

Answer

Create a translation-rule matching the internal number and apply it inbound on the CUCM-facing dial peer with 'call-blocking'

Answer

Create a SIP profile with 'request INVITE sip-header Diversion modify' and apply it inbound on the CUCM-facing dial peer

Answer

Configure 'no supplementary-service sip moved-temporarily' globally under voice service voip