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ETSI EN 301 453-1
M00000704
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ETSI EN 301 453-1 Private Integrated Services Network (PISN); Inter-exchange signalling protocol; Diversion supplementary services [ISO/IEC 13873 (1995) modified]; Part 1: Test Suite Structure and Test Purposes (TSS&TP) specification
standard by European Telecommunications Standards Institute, 11/01/2000
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