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Cisco Bug: CSCtd67740 - SG3 T38 Version 3 Fax call not working between 2 SIP Trunks via CUCM

Last Modified

Nov 03, 2012

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases


Description (partial)


If SG3 T38 Fax Relay Version 3 call is placed between 2 SIP Trunks registered to Cisco Unified Communications Manager, the call may fail.


SG3 T38 Fax Relay is configured on Cisco IOS Voice gateways and gateways are registered to CUCM as SIP Trunks.
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