DIN EN 301815-1:2001 宽带综合业务数字网(B-ISDN).数字用户信令系统No.2(DSS2)协议.在呼叫连接建立时参数指示和服务等级的质量.第1部分:协议规范
Broadband Integrated Services Digital Network (B-ISDN) - Digital Subscriber Signalling System No. two (DSS2) protocol; Quality of Service Class and Parameters indication at call/connection establishment - Part 1: Protocol specification (ITU-T Recommendati