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Cisco Bug: CSCup18129 - CUCM is sending emty TCS instead of requestMode

Last Modified

Feb 16, 2018

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

8.6(2.24900.17)

Description (partial)

Symptom:
In the following call flow :
ATA 187 (SIP)--  CUCM -- H323 GW--T1

When the ATA sends re-invite to the convert the voice call to FAX calls. Th FAX call fails

Conditions:
H323 gateway is used, there is no MTP involved
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