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Cisco Bug: CSCuo14192 - CtiLineCallTransferEndedNotify absent & call clear delay, under race

Last Modified

Mar 06, 2018

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

9.1(2.11900.12)

Description (partial)

Symptom:
UCCX agents may become stuck in Reserved state due to the absence of CtiLineCallTransferEndedNotify;
May observe delay for call clearing, calling party is connected to dead air for almost 8 seconds after transfer target hangs up.

Due to a race condition SIPStationCdfc is in disconnect_indication12 state when it receives the CcNotifyReq, and the current logic doesn't call the CTI API at this state

Conditions:
transfer target hangs up at the same time when UCM is completing the transfer feature operation
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