Cisco Bug: CSCvu19773 - Unnecessary MTP insertion for a FAX to FAX call due to EO DTMF mismatch
May 11, 2020
- Cisco Unified Communications Manager (CallManager)
Known Affected Releases
Symptom: MTP will be inserted due to DTMF mismatch for a EO offer even if peer doesn't support any DTMF methods. Conditions: Party A EO ( Phone or Trunk) --> CUCM --> SIP Trunk --> EO Offer In the above call flow, even if party A doesn't support any DTMF method, CUCM will insert a MTP due to DTMF mismatch and sends EO offer to party B.
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Bug Details Include
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