標(biāo)準(zhǔn)號：ISO/IEC 14842-1996
中文標(biāo)準(zhǔn)名稱：信息技術(shù) 系統(tǒng)間遠(yuǎn)程通信和信息交換 專用綜合業(yè)務(wù)網(wǎng) 規(guī)范、功能模型和信息流 無干擾和無干擾補(bǔ)償輔助服務(wù)
英文標(biāo)準(zhǔn)名稱：Information technology - Telecommunications and information exchange between systems - Private integrated services network - Specification, functional model and information flows - Do not disturb and do not disturb override supplementary services
標(biāo)準(zhǔn)類型：L79
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國標(biāo)準(zhǔn)分類號：L79
國際標(biāo)準(zhǔn)分類號：33.040.40;35.110
適用范圍：This International Standard specifies the Supplementary Services Do Not Disturb (SS-DND) and Do Not Disturb Override (SS-DNDO), which are applicable to various basic services supported by Private Integrated Services Networks (PISN). Basic services are specified in ISO/IEC 11574. SS-DND is a supplementary service which enables a served user to cause the PISN to reject any calls, or just those associated with a specified basic service, addressed to the served user's PISN number. The calling user is given an appropriate indication. Incoming calls are rejected as long as the service is active. The served user's outgoing service is unaffected. SS-DNDO is a supplementary service which enables a served user to override SS-DND at a called user; that is, to allow the call to proceed as if the called user had not activated SS-DND. SS-DND and SS-DNDO are described separately because SS-DND is a service used by a called user, and SS-DNDO is a service used by a calling user. This leads to describing two very related state machines. - It is possible to implement SS-DND without implementing SS-DNDO. Supplementary service specifications are produced in three stages, according to the method described in CCITT Recommendation I.130. This International Standard contains the stage 1 and stage 2 specifications of SS-DND and SS-DNDO. The stage 1 specifications (clauses 6 and 7) specify the supplementary service as seen by users of PISNs. The stage 2 specification (clauses 8 and 9) identify the functional entities involved in the supplementary service and the information flows between them.