標準號：DIN EN 300058-1-1999
中文標準名稱：綜合業(yè)務數(shù)字網(wǎng)(ISDN).呼叫等待(CW)輔助服務.數(shù)字用戶用1號系統(tǒng)(DSS1)協(xié)議.第1部分:協(xié)議規(guī)范
英文標準名稱：Integrated Services Digital Network (ISDN); Call Waiting (CW) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 1: Protocol specification (Endorsement of the English version EN 300058-1 V 1.2.4 (1998-06) as German
標準類型：M11
發(fā)布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：M11
國際標準分類號：33.080
適用范圍：The document deals with the stage-3-description of the user-network interface for the supplementary service Call Waiting in the pan-European ISDN. With the signalling procedures given in this document the called user is permitted to be notified of an incoming call although all the B-channels are unavailable at that time. The called user has then the choice of accepting, rejecting or ignoring the waiting call.#,,#