Calling and Called party name display is available only on stations with an alphanumeric display. Certain stations, such as M2616, may or may not have a display. The display module is an option on that station. Others either have a display or do not have a display. If they have a display, some older stations may not have name display capability.

The number information is displayed when the user enables the service by using the Automatic Digit Display (ADD) or Digit Display Standard (DDS) feature, although Tandem Digit Display (TDD) exists and includes both of the prior capabilities. For differences between the options, see the CS 1000 documentation. However, the Call Number Display Denied (CNDD) feature forcibly blocks the display, No Digit Display (NDD) applies for endpoints without a display screen.

The station is programmed with the feature (CS 1000: class of service) Call party Name Display Allowed (CNDA) on a station permitting name display. If the feature mnemonic is not provided, the name display is not presented.

Stations with the feature programmed display names and numbers if the display of digits is enabled, provided the station has the capability. For example, if an M2616 without a display is substituted for a station with a display, no name or number information is displayed.

For more information, see Display capabilities in Appendix G: Generic station operations.