I understand that if my sip registration is gone or power fails, the box will failover to PSTN line.
If my sip is good, but remote party i am calling , say 9058861310 (one several friends on same remote proxy) is off the proxy for whatever reason, then, I definitely can't make a successful call through sip. How am going to make may dialpplan to fallback to try pstn upon a not successful SIP call?
The SPA3102 does not support this feature. It is designed for hard failover, not conditional failover. You could set it so you have an access code to dial if the call does not complete over voip. Therefore, you could pickup the phone, dial the destination, and if it does not connect then hang up and dial the access code (for a different call path) then the destination to try using the pstn. It does not automatically fail over.
SPA should be programmed in a way that it looks up the pattern and if there's several match (in my case, 9058861310 and NxxNxxxxxx@gw0), it should try first exact match, if not successful, then try second match.
If it's not able to do this condiontional fallback, do you know where we can request a feature enhancement or bug report?
Do you know whether spa will respond to "Sip redirect" or some kind of message so SPA will try next dialplan in line?
The feature you are describing is a feature of the ITSP (sipbroker) and not of the SPA device. The dialplan is set for longest/best match and it only picks one. If that one does not work, then the call fails. The SPA device does respond to/understand 3xx redirects. Typically the redirect is given when a call forward is invoked not if the call fails. Most of the time the destination is not found so you get a 4xx sip message not a redirect. This feature is most likely not going to be implemented on this product and it is not a bug in the device. Sorry if that is not what you wanted to hear, its just not a feature of the device.
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