Tech Info - 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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Tech Info - ISDN Standards

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