ETSI - PRETS 300 796-1
Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. Two (DSS2) Protocol; Generic Functional Protocol; Core Aspects; Part 1: Protocol Specification (ITU-T Recommendation Q.2932.1(1996), Modified)
| Organization: | ETSI |
| Publication Date: | 1 June 1997 |
| Status: | inactive |
| Page Count: | 9 |
scope:
This first part of ETS 300 796 specifies the functional protocol for the pan-European Broadband Integrated Services Digital Network (B-ISDN), using local information exchange, for the application to a range of additional basic call capabilities and supplementary services at the TB reference point or coincident SB and TB reference point (as defined in ITU-T Recommendation I.413 [1]) by means of the Digital Subscriber Signalling System No. two (DSS2) protocol.
The functional protocol is based on the use of the Facility information element.
To be functional this protocol requires knowledge of the additional basic call capabilities and supplementary services supported by the user equipment. This facilitates user equipment operation without human intervention by defining the semantics for the protocol elements which user equipment can process on its own.
The procedures specified in this ETS can be used for:
- activation and deactivation;
- invocation and operation;
- interrogation;
- status request; and
- status notification,
of additional basic call capabilities and supplementary services in association with existing calls or outside any existing call.
The application of this ETS to individual additional basic call capabilities and supplementary services is outside the scope of this ETS and is defined in those ETSs which specify the individual capabilities.
Further ETSs cover the capabilities for non-local addressing within the generic functional protocol.
All conformance to this ETS is based on the external behaviour at the interface at the TB or coincident SB and TB reference point, i.e. on the generation of the correct message structure and in the proper sequence as specified in this recommendation.
Further part(s) of this ETS specify the method of testing required to identify conformance to this ETS.
This ETS is applicable to equipment, supporting additional basic call capabilities and supplementary services using the functional protocol, to be attached at either side of a TB reference point or coincident SB and TB reference point when used as an access to the public ISDN.
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