Question

An engineer is configuring a CUBE to send outbound calls to an ITSP that provides two SIP proxy IP addresses (198.51.100.10 and 198.51.100.11) for redundancy. The requirement is that a single outbound dial peer must be able to try both proxies, distributing new call attempts across them, and failing over to the second proxy if the first is unreachable. Which configuration approach meets this requirement?

Accepted Answer

Create a voice class server-group listing both IP addresses, then reference it under the outbound dial peer's session target

Answer

Configure two separate outbound dial peers with identical destination-patterns and set matching preference values

Answer

Set the session target to a DNS name and rely on the ITSP's DNS A record round-robin only

Answer

Apply a SIP profile to the dial peer that rewrites the Request-URI host to alternate between both addresses