ETSI EN 300 403-7-2000 综合业务数字网(ISDN).1号数字用户信令系统(DSS1)协议.电路模式基本呼叫控制的信令网络层.第7部分:抽象测试套件(ATS)和部分协议额外测试信息实现(PIXIT)形式规范
Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No.One (DSS1) Protocol; Signalling Network Layer for Circuit-Mode Basic Call Control; Part 7: Abstract Test Suite (ATS) and Partial Protocol Implementation eXtra Information