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Incoming CUCM SIP trunk matching explanation

Unanswered Question
Mar 22nd, 2012
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can you please explain what the basics rules for incoming SIP trunk matching on CUCM are?

I know that the inbound source IP address & port received on the SIP trunk must match with a configured destination IP address on the inbound trunk.

What if I have more SIP trunks with the same destination IP address & port. How can I determine which of my trunks will get matched?

Thank you.

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Chris Deren Thu, 03/22/2012 - 14:47
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Why would you have multiple SIP trunks pointing to the same IP address and port in the first place?

The answer is it would be unpredictable as there is no reason to do so.


paulheilmeier Thu, 06/14/2012 - 05:31
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i would like also know with which criteria a incomming sip trunk is choosed!

I have a couple of SIP-T with TLS for incoming and outgoing (different IP Addresse). If i associated the same security profile with the same CN to a SIP Trunk always the latest configured SIP-T is choosed...

My reasoning was that following choose criteria exist (top higher rated)

- CN

- IP&Port

Any other criterias?

Regards Paul


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