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Tech Stuff - ISDN Standards

Good old ISDN. This section contains some information about the various specifications from our friends at the ITU, Bellcore/Telordia, Lucent and Nortel (you know the guys who still charge for standards).

ITU
Spec Latest Name
Q.921 June 2000 ISDN user-network interface - Data Link Layer
Q.922 Feb 1992 ISDN data link layer specification for Frame Mode Bearer Services
Q.930 March 1993 Digital Subscriber Signalling System No. 1 (DSS1) - ISDN user-network interface layer 3 - General Aspects
Q.931 May 1998 Digital Subscriber Signalling System No. 1 (DSS1) - ISDN user-network interface layer 3 - specification for basic call control
Q.932 June 2000 Digital subscriber Siganlling System No. 1 (DSS1) - Generic Procedures for the control of ISDN Supplementary Services
Q.950 June 2000 Supplementary Services protocols, structure and general principles
Q.951 Supplementary Services - Number Identification
Q.952 Supplementary Services - Call Offering
Q.953 Supplementary Services - Call Completion
(so we gotta pay extra to finish a call!!?)
Q.954 Supplementary Services - Multiparty
Q.955 Supplementary Services - Community of Interest
Q.956 Supplementary Services - Charging
Q.957 Supplementary Services - Additional Information Transfer
Bellcore/Telordia
SR-NWT-002361 1992 National ISDN-2 (NI-2)
SR-NWT-001937 National ISDN-1 (NI-1)
SR-NWT-001953 1991 National ISDN-1 (NI-1)
Lucent
235-900-341 National ISDN specification.
235-900-343 Custom ISDN specification.
Nortel Networks
NIS S208-6 Includes NI-1,2 and Custom features.


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