Confirm that your router's flash has enough capacity to hold the extracted contents, as the full fileset can be large.
Support for Called-Name Display (DNIS) for phones within a voice hunt group.
Loads for supported hardware, including then-new support for Cisco IP Phones 8821, 8845, and 8865 . Cme-complete-fileset-12.0.tar
A set of HTML and XML files required to manage the system through a web browser instead of strictly using the CLI.
Because CME functionality is technically embedded within the Cisco IOS image itself, you do not "install" it as a separate application; rather, you extract this fileset to the router’s flash memory to provide the necessary support files. Confirm that your router's flash has enough capacity
Use the show license all command to ensure you have the appropriate Unified Communications (UC) license activated.
CME 12.0 is specifically designed to run on and later releases. The complete fileset typically includes: A set of HTML and XML files required
Support for Idle URLs and "Calling Number Local" configuration under the voice register global mode.
The standard method to deploy these files is using the archive command from the privileged EXEC prompt: archive tar /xtract tftp:// /Cme-complete-fileset-12.0.tar flash:
After extraction, you must configure the router to serve these files to IP phones using the tftp-server flash: command for each firmware file. INSTALL CME 12 IN ROUTER ISR4321/K9 - Cisco Community