Question

An engineer configures a CUBE to accept inbound SIP calls from an ITSP. The current inbound dial peer matches on 'incoming called-number', but the ITSP recently changed the format of the called number for each customer trunk, breaking inbound matching. The engineer wants a deterministic, format-independent way to bind incoming INVITEs from this ITSP to a specific inbound dial peer based on the host portion of the SIP Request-URI. Which configuration achieves this?

Accepted Answer

Create a 'voice class uri' of type sip matching the ITSP host, then reference it under the inbound dial peer with 'incoming uri request'

Answer

Configure 'incoming called-number .' on the inbound dial peer to wildcard-match any called number from the ITSP

Answer

Apply a SIP profile that rewrites the Request-URI host, then match with 'answer-address' on the inbound dial peer

Answer

Configure 'destination-pattern' with the ITSP host FQDN so the outbound dial peer selects the inbound leg