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Cisco Bug: CSCvu34205 - CUCM fails to update RFC2833 DTMF payload value when MTP is in the call path

Last Modified

Sep 30, 2020

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

11.5(1.18000.113)

Description (partial)

Symptom:
DTMF payload for RFc2833 is not being updated , can lead to DTMF not working in certain scenarios.

Conditions:
-MTP must be allocated.
-Both legs doing RFC2833 and initial payload allocated needs to change in a re-negotiation.
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