I have been trying to get into this page, and I feel that there must be something that I need to configure on Unity Connection to allow a user access to this. I am sure the username and password is correct, just seems like an access issue.
The user options portal for Unity Connection is not CCMUser (CUCM only). It's the Cisco PCA (Personal Communications Assistant). That is https:///ciscopca. You can give users access to Unity Assistant and etc. via the CoS configurations.
If you truly mean CCMUser which is for the phone, then the end users need to be a member of the Standard End Users group (name may be off a bit but it's pretty obvious when you look at it) to access this page for administration of their phone.
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