NF Z82-815-2*NF EN 301815-2:2002 宽带综合业务数字网(B-ISDN).数字用户信令系统No.2(DSS1)协议.呼叫和连接服务质量等级和参数指示质量.第2部分:遵守协议声明.格式规范
Broadband Integrated services digital network (B-ISDN) - Digital subscriber signalling system N o. 2 (DSS2) protocol - Quality of service class and parameters indication at call/connection establishment - Part 2 : protocol implementation conformance state