Integrated Services Digital Network (ISDN). Signalling System n o 7 ISDN User Part (ISUP) version 2 for the international interface . Part 18 : completion of Calls to Busy Subscriber (CCBS) supplementary service.
标准号:NFZ 85-356-18-1997
标准名称: 综合服务数字网(ISDN).第7信令系统.国际接口ISDN用户部分(ISUP)第2版.第18部分:忙用户呼叫完成(CCBS)补充服务(欧洲电信标准ETS 300356-18)
英文名称:Integrated Services Digital Network (ISDN). Signalling System n o 7 ISDN User Part (ISUP) version 2 for the international interface . Part 18 : completion of Calls to Busy Subscriber (CCBS) supplementary service.
标准类型:国外标准
标准状态:现行
发布日期:1997-07-20
实施日期:1997-07-20
中国标准分类号(CCS):M11
国际标准分类号(ICS):33.080