Guest

Preview Tool

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.
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.