ETSI EN 301 065-3-1998 综合业务数字网(ISDN).无应答时呼叫完成(CCNR)补充业务.1号数字用户信令系统(DSS1)协议.第3部分:用户用测试套件结构和测试目的(TSS&TP)规范(版本1)
Integrated Services Digital Network (ISDN); Completion of Calls on No Reply (CCNR) Supplementary Service; Digital Subscriber Signalling System No. One (DSS1) Protocol; Part 3: Test Suite Structure and Test Purposes (TSS&TP) Specification for the User (V1.