[cisco-voip] SIP Trunk Redundancy

[Mark Holloway]

Dial Peer for SIP Trunk should use 'sip-server' (not DNS: or IP: statements) and the sip-ua would then be configured with the sip-server dns value.  

sip-server support DNS SRV records.  The ITSP should be providing multiple A records for DNS SRV query.

On Nov 23, 2009, at 12:13 PM, Ted Nugent wrote:

> I'm working with a client that has 3 sites where the PRIs were replaced by SIP trunks. Everything appears to be running fine with the exception of outbound trunk redundancy. The appear to have just removed the PRIs from the existing RGs and replaced them with the SIP trunks. The problem is that if a SIP trunk goes down its not rerouting to the next trunk, they are just getting dead air. I'm assuming that this is similar to the issue seen with H323 trunks and why a gatekeeper would be needed for this but what are the options for SIP? I can probably get by with using Locations CAC for FO if the trunks fills but not sure about if it actually goes down and CUCM can determine that. CUCM 7.12 and no CUBE. 
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