I want to limit what users can do using this web page. for example I want to prvent users from changing thier PIN code or maybe I want to prevent them from subscribing to services menu. is this available?
In 4.1(3) you are able to do so. I recall some of these options were not available in 3.x, but check out the following to see what you have available:
ccmadmin > enterprise parameters > CTRL F for ccmuser
Here's a snippet from the help file:
Show Change PIN Option : This parameter determines whether or not the option Change PIN for a User appears on the Cisco IP Phone Options web (CCMUser). If this option is enabled, the user can change the PIN.
This is a required field.
Change will take effect on next login to Cisco Call Manager User Options Page.