TA NWT 001290 : ISSUE 1

Contains Bellcore's preliminary view of generic requirements for a Selective Call Acceptance feature operating through an ISDN Basic Access Interface. This feature, called ISDN Selective Call Acceptance (I SCA), is a terminating call management feature. It enables I SCA users to instruct a Stored Program Control System (SPCS) to attempt terminating call completion to the I SCA user only from a limited number of calling Directory Numbers (DNs). Presents requirements for the following: (1) Feature Operations, (2) Internal Call Processing Controls, (3) Signaling Message Structure, (4) Administration Operations, (5) Interactions, (6) Limitations and Restrictions, (7) Timing and Tolerances.