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abdel-moniem Thu, 12/05/2013 - 04:25
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Hi Maheshwar

Technically , I don't think it will provide any error and it will accept the Configuration. The Key entry it checks both IP and Port are not the same .

Suresh Subramanian Thu, 12/05/2013 - 07:16
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Maheshwar, You can also check the SIP Trunk configuration checklist from this page


http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_0_1/ccmsys/a08sip.html#wp1126527



Each SIP trunk  must have a unique SIP routing configuration for SIP routing to work. Cisco  Unified Communications Manager uses a combination of information from incoming  SIP messages to route the SIP message to the correct SIP trunk. Be aware that a  SIP trunk routing configuration is unique if the following statements apply:


No other trunk  gets configured with the same values for the Incoming Transport Protocol,  Incoming Port, and Destination Address fields.


No other trunk  gets configured with Transport Layer Security (TLS) selected as the Incoming  Transport Protocol and the same values in the Incoming Port and X.509 Subject  Name fields. The X.509 Subject Name parameter can comprise a list of names.


It has also listed out some SIP trunk examples.

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