Cisco Unified Communications Manager (CallManager)

Field Notice: Cisco Voice Gateways May Experience Reloads When Receiving Multicast Music On Hold with Cisco CallManager

June 02, 2005

Products Affected

  • Cisco1700 - Cisco1700

  • Cisco2600XM - Cisco2600XM

  • Cisco2691 - Cisco2691

  • Cisco2800 - Cisco2800

  • Cisco3700 - Cisco3700

  • Cisco3800 - Cisco3800

Problem Description

A Cisco voice gateway may reload when receiving Muticast Music on Hold from CCM and a call is put on hold. The problem does not exist when a CME router is the source of Multicast Music on Hold.


Customers who are using a Cisco voice gateway with Cisco CallManager (CCM) may experience a reload when a call is placed on hold and resumed when Multicast Music on Hold is being received from CCM or another multicast source. This issue will only be experienced if the customer is running Cisco IOS® Software 12.3(11)T4 or 12.3(11)T5. The issue is resolved with 12.3(11)T6. All versions of CCM are effected.

Problem Symptoms

The Cisco voice gateway may reload when an IP phone is placed on hold and music on hold is being received.


The problem exists in 12.3(11)T4 and 12.3(11)T5. The problem is fixed in 12.3(11)T6. The problem does not depend upon CCM version.


To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.



CSCsa66702 (registered customers only)

Cisco voice gateway reload. Fixed in 12.3(11)T6

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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