What is the difference between CME and CUE

[sossie]

Hi all,

I have a silly question. Have installed one UC540. What is the difference betwen CME and CUE and what do these components actually "look" like.

This is my understanding so far:

CUE is a application that runs within the IOS that handles voicemail, AA etc. CUE has a prompt like this: se-10-1-1-119#

What is CME? What does it do and why are these seperate components?

Thanks, Simon.

[Ryan-Kramer]

CME is a call-processing application in Cisco IOS software that enables Cisco routers to deliver PBX functionally, providing call processing and device control features. CME does NOT provide any voicemail features. You could deploy CME and have a fully functional phone system, with the ability to make internal and external calls. CME handles everything from the connection to the PSTN network (T1, FXO), to the communication between internal devices. CME handles some obvious features such as transfer, hold, music on hold, conferencing, hunt groups, single number reach, directory services, etc.

CUE is a voicemail system that is installed into the Cisco routers as a separate component. Google AIM-CUE NM-CUE. These CUE components are installed into the older ISR routers (2800,3800 series etc) to provide voicemail features. Or ISM-SRE-300, SM-SRE-700 which are components installed into the new ISR G2 routers.

CUE does NOT run Cisco IOS, it runs a linux based operating system. The commands however, are similar to IOS.

CUE is responsible for features such as voicemail, auto-attendant, unified messaging (IMAP, Email Notifications, Fax to Email)

CME/CUE are managed separately. 

For example the Cisco UC540 is packaged with a Cisco IOS image with the voice feature set (CME) and a Cisco Unity Express component (AIM-CUE)