EN 301 492-2 V1.1.1 (2000)被替代
Private Integrated Services network (PISN); Inter-exchange signalling protocol; Cordless terminal authentication supplementary services; Part 2: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the VPN b"" service entry poi
出版：European Telecommunications Standards Institute
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