This TS describes the supplementary services belonging to the group Name Identification supplementary services.
Here is a short description of the CNAP service:
The CNAP supplementary service provides for the ability to indicate the name information of the calling party to the called party at call set-up time for all incoming calls.
The calling party takes no action to activate, initiate, or in any manner provide Calling Name Identification Presentation. However, the delivery of the calling name to the called party may be affected by other services subscribed to by the calling party. For example, if the calling party has subscribed to Calling Line Identification Restriction (CLIR), then the calling line identity as well as the calling name identity shall not be presented to the called party.
CNAP is applicable to all telecommunication services except Short Message service.