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Cisco Bug: CSCuo86609 - Support for 3905 phones to play reorder tone when CAC blocks the call

Last Modified

Mar 03, 2018

Products (11)

  • Cisco IP Phone 8800 Series
  • Cisco Unified IP Phone 9951
  • Cisco Unified SIP Phone 3905
  • Cisco Unified IP Phone 6941
  • Cisco Unified IP Phone 6961
  • Cisco Unified IP Phone 8961
  • Cisco Unified IP Phone 8945
  • Cisco Unified IP Phone 9971
  • Cisco Unified IP Phone 8941
  • Cisco Unified IP Phone 6945
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Known Affected Releases

9.4(1)

Description (partial)

Symptom:
-CUCM 9.1.2.10000-28.
-Cisco 3905 running 9.4.1

-CAC is not working on 3905 phones, the call is being blocked but instead of getting fast busy, they are getting dead air for some seconds then call is dropped. No messages.

This problem was isolated and documented on bug CSCuj46965

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After this the limitation was included in the readme file of the firmwares:

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Limitations and Restrictions

Call Admission Control with Cisco Unified Communications Manager
We recommend that you do not configure the Cisco Unified Communications Manager to apply Call Admission Control (CAC) to the Cisco Unified SIP Phone 3905. Ensure that the phone is not part of the CAC locations or CAC gatekeepers and trunks. For more information on CAC, see the Cisco Unified Communications Manager System Guide.

Cisco Unified SIP Phone 3905 Release Notes for Firmware Release 9.2(2)
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/3905/firmware/9_2_2/english/release/notes/3905_922.html

Cisco Unified SIP Phone 3905 Release Notes for Firmware Release 9.4(1)
http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cuipph/3905/firmware/9_4_1/english/releasenotes/IP05_BK_3FA956FD_00_3905-release-notes-9_4_1/IP05_BK_3FA956FD_00_3905-release-notes-9_4_1_chapter_00.html

- the call is being blocked but instead of getting fast busy, they are getting dead air for some seconds then call is dropped.

Conditions:
Cisco 3905 running 9.4.1
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