標(biāo)準(zhǔn)號(hào)：ISO/IEC 15056-1997
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) 交換間信令協(xié)議 轉(zhuǎn)接計(jì)數(shù)器附加網(wǎng)絡(luò)特性
英文標(biāo)準(zhǔn)名稱：Information technology - Telecommunications and information exchange between systems - Private Integrated Services Network - Inter-exchange signalling protocol - Transit counter additional network feature
標(biāo)準(zhǔn)類型：L78
發(fā)布日期：1999/12/31 12:00:00
實(shí)施日期：1999/12/31 12:00:00
中國(guó)標(biāo)準(zhǔn)分類號(hào)：L78
國(guó)際標(biāo)準(zhǔn)分類號(hào)：33.040.40;35.110
適用范圍：This International Standard specifies the signalling protocol for the support of the Transit Counter additional network feature (ANF-TC) at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected together within a Private Integrated Services Network (PISN). ANF-TC is a feature that limits the number of Transit PINXs that a call setup request may be routed through e.g., to protect the network against indefinite looping. The Q reference point is defined in ISO/IEC 11579-1. Service specifications are produced in three stages and according to the method specified in CCITT Recommendation I.130. This International Standard contains the stage 3 specification for the Q reference point and satisfies the requirements identified by the stage 1 and stage 2 specifications in ISO/IEC 15055. The signalling protocol for ANF-TC operates in association with the signalling protocols for basic circuit switched call control (as specified in ISO/IEC 11572) and call independent (connection oriented) signalling connections (as specified in ISO/IEC 11582). This International Standard also specifies additional signalling protocol requirements for the support of interactions at the Q reference point between ANF-TC and other supplementary services and ANFs. This International Standard is applicable to PINXs that can interconnect to form a PISN.