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Cisco Bug: CSCta96039 - Fax fails if faxserver sends reinvite for T38 before voice call establis

Last Modified

Feb 22, 2014

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)


T38 Faxes involving third party fax servers and callmanager with MTP fail


Long call flow involving mtp. T38 reinvite is sent before voice call completely established
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