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ECMA-185

Private Integrated Services Network (PISN) - Specification, functional model and information flows - Call completion supplementary services (CCSD)

2nd edition, June 1997

This Ecma Standard, specifies supplementary services Call Completion (SS-CC), which are applicable to various basic services supported by Private Integrated Services Network (PISN). Basic services are specified in ECMA-142.

SS-CC consists of two Supplementary services: the Completion of Calls to Busy Subscribers supplementary service (SS-CCBS) and the Completion of Calls on No Reply supplementary service (SS-CCNR). SS-CCBS allows completion of a call to a subscriber that was unsuccessful because of a busy condition and SS-CCNR allows completion of a call to a subscriber that was unsuccessful because the subscriber, although alerted, did not answer.

Supplementary service specifications are produced in three stages, according to the method described in ETS 300 387. This Standard specifies the stage 1 and stage 2 specifications of SS-CC. The stage 1 specifications (clauses 6 and 7) specify the supplementary services as seen by the users of PISNs. The stage 2 specification (clause 8) specifies the functional entities involved in the supplementary services and the information flows between them.

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Classification

CategoryData communication – PISN

SubcategoryPISN

Technical CommitteeTC32

ISO/IEC number13866

ETSI numberETS 300 365

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  • ECMA-185, 1st editionNo file available