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Cisco Bug: CSCul31400 - Call Failures due to leak in connection manager after redirection fails

Last Modified

Feb 25, 2019

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

8.6(2.10000.30) 9.1(2.10000.1)

Description (partial)

Memory leak of media processes under CTI redirect error scenario causing sluggish CUCM behavior and unable to process calls after a certain time based on number of times this error scenario is hit. Memory leaked per call is around 21K.

Issue exists in CUCM 7.x, 8.x, 9.x 10.x. It is a remote scenario which causes a process leak for certain conditions where the redirection fails due to some error while the caller was originally the called side of a call.
One such scenario :
A calls B. B answers.
CTI Redirects A to C. B and C are connected. ( note that B is Side A of the call now )
CTI tries to redirect C to D but this redirection fails due to some configuration error (dial invalid DN)
Even though; redirection restore should happen (B and C should be connected); this does not happen and the media is not cleared. This causes memory leak of the media processes.
If redirect is successful , we will not hit this issue.
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