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Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Specification, functional model and information flows - Simple dialog supplementary service
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STANDARD published on 16.8.2001
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Designation standards: ISO/IEC 21407-ed.1.0
Publication date standards: 16.8.2001
SKU: NS-942034
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: International technical standard
Category: Technical standards ISO
This International Standard specifies the supplementary service Simple Dialog (SS-SD), which is applicable to various basic services supported by Private Integrated Services Networks (PISNs). Basic services are specified in ISO/IEC 11574. Supplementary service SD enables a user to communicate with another user or application by the exchange of keypad and display information transparently over a PISN. Service specifications are produced in three stages, according to the method described in ETS 300 387. This International Standard contains the stage 1 and stage 2 specifications of SS-SD. The stage 1 specification (clause 6) specifies the supplementary service as seen by users of PISNs. The stage 2 specification (clause 7) specifies the functional entities involved in the supplementary service and the information flows between them.
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Latest update: 2026-08-07 (Number of items: 2 292 304)
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