Core Issue
In Cisco CallManager 3.3.2, even after removing the devices that are associated with the Music on Hold (MoH) server, when an attempt to remove the MoH server is made, the following error message is received:
The server cannot be deleted. The following apps are using it - Cisco TCD and Audio Txlr
Resolution
Apart from disassociating the devices that are registered to it, references to the MoH server must be removed from the services listed in the error message.
To delete an MoH server from a system, all references to that server must first be removed. This includes:
Troubleshooting Cisco Unified Communications Manager MOH Error Message
Problem Type
Call control software (CallManager, CallManager Express, ICS7750, SRST, SS7 call agents)
Call Control
CallManager
CallManager Features
Music on hold (MoH)
Common Software and Product Issues
Uninstall problem
Failure Type
Error message
CallManager Errors
The server cannot be deleted, The following apps
CallManager Services
Cisco IP voice media streaming app
Music on Hold (MoH)
Music on hold server