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Cisco Bug: CSCtc49712 - CUCM SIP trunk traffic on an unexpected port

Last Modified

Feb 22, 2014

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

6.1(2.1000.13)

Description (partial)

Symptom:
CUCM 6.1.2.1000-13 is not using port 5060 for the source port of UDP SIP messages.



Conditions:
Another device initiates a SIP UDP message using source port 5060 and destination port 5060.  CUCM is expected to reply with a response using source port 5060 and destination port 5060.
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