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Cisco Bug: CSCta91735 - SIP-NAT SBC: Via and Contact Header port translated to 0

Last Modified

Feb 22, 2014

Products (1)

  • Cisco IOS

Known Affected Releases

12.4(15)T16 12.4(24)T

Description (partial)

Symptoms: Contact and Via ports are rewritten to 0.

Conditions: The symptom is observed under the following conditions: 

1. INVITE is sent from outside to inside.
2. Contact and Via headers in the SIP packet have a different port than the one
specified as the outside port the configuration.
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