North American ISDN Users' Forum Agreements on Integrated Services Digital Network

摘要

The document compiles the existing North American ISDN Users' Forum (NIU-Forum) agreements for an Integrated Services Digital Network (ISDN) developed and approved in the NIU-Forum as of November 1990. These agreements cover: Layer 1 Basic Rate Interface (BRI) at the U, and S/T reference points; Layer 1 Primary Rate Interface (PRI) at the U reference point; Layer 2 BRI and PRI; Layer 3 BRI Basic Call Control for Class I equipment; Layer 3 PRI Basic Call Control for Class II equipment; and Generic Control procedures for Class I BRI Supplementary Services. In addition, the document references the Conformance tests which have been completed by the NIU-Forum. These include: Layer 1 BRI S/T interface; and Layer 2 BRI Link Access Procedure, D-channel (LAPD). Finally, the document contains the Application Profile for four of the Incoming Call Management applications which have been submitted to the NIU-Forum.