ETSI EN 301 815-1-2000 宽带综合业务数字网(B-ISDN).2号数字用户信令系统(DSS2)协议.呼叫/连接建立阶段的业务质量等级和参数指示.第1部分:协议规范(版本1.1.1). ITU-T建议
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 (V1.1.1; ITU-T Recomm