ECMA 192 : 4ED 2001現行
PRIVATE INTEGRATED SERVICES NETWORK (PISN) - INTER-EXCHANGE SIGNALLING PROTOCOL - CALL OFFER SUPPLEMENTARY SERVICE (QSIG-CO)
出版：European Computer Manufacturers Association
專家解讀視頻
基本信息
標準編號： ECMA 192 : 4ED 2001
標準類別：Standard
出版單位：European Computer Manufacturers Association
標準頁數：0
標準簡介
Defines signalling protocol for supporting the Call Offer supplementary service (SS-CO) at the Q reference point between Private Integrated Services Network Exchanges (PINXs) connected within a Private Integrated Services Network (PISN). This is a supplementary service enabling a call to be offered to a busy called user on request from the calling user (or on that user's behalf) and to wait for that called user to accept this call.
