This field provides the same information as the Display (Internal Caller ID) field, but you must limit input to ASCII characters. Devices that do not support Unicode (internationalized) characters display the content of the ASCII Display (Internal Caller ID) field.
Setting applies only to the current device unless you check the check box at right (Update Shared Device Settings) and click the Propagate Selected button. (The check box at right displays only if other devices share this directory number.)
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_administration_guide_chapter09186a008037e9a1.html
