I have a AS5400 as our local SIP gateway with 6T1, I would like set up sip client to fail over to another SER proxy that can route to local PSTN when AS5400 capacity is full. Can the AS5400 return special error code or sip signal to sip client?
You can setup a voip dp with higher preference for the other proxy. Once the trunk-group with the T1s is full, further calls will be sent there.
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