NF Z85-356-4-1997
综合服务数字网络(ISDN).第7信令系统.国际接口ISDN用户部分(ISUP)第2版.第4部分:呼叫线路识别限制(CLIR)补充服务(欧洲电信标准ETS 300356-4)
Integrated Services Digital Network (ISDN). Signalling System n o 7 ISDN User Part (ISUP) version 2 for the international interface . Part 4 : Calling Line Identification Restriction (CLIR) supplementary service.