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Cisco Bug: CSCuw22277 - cp-mediacontrol timing issue parsing OLC ack to SIP process

Last Modified

Sep 29, 2017

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

10.5(2.10000.5) 11.0(1.10000.10) 9.1(2.10000.24)

Description (partial)

Symptom:
Call fail when PSTN SIP endpoint joins conference

Conditions:
PSTN SIP endpoint is connected to conference bridge and MTP from different node is allocated for DTMF mismatch.

Message timing issue causes UCM not sending answer that results in call drop.
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