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Cisco Bug: CSCum97996 - CUCM sends "Send 181 Call Is Being Forwarded" even it is False

Last Modified

Feb 16, 2017

Products (1)

  • Cisco Unified Communications Manager (CallManager)

Known Affected Releases

9.1(2.11900.12)

Description (partial)

Symptom:
CUCM sends SIP 181 on inbound call leg when call is being forwarded.
This may result in unexpected tones to be played at the caller.

Conditions:
CUCM Version : 9.1.2.11900-12 with following configuration
- SIP trunk with QSIG tunnelling enabled.
- CUCM service parameters
"Send 181 call is being forwarded" is set to False
"Delay Sending 181 until 180/183 message is received" is set to True

Call flow :
Inbound call on SIP trunk which is being forwarded.

With above configuration CUCM should never send out 181.
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Bug Details Include

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  • Status
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