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ETSI EN 300 356-15
M00000006
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ETSI EN 300 356-15 Integrated Services Digital Network (ISDN); Signalling System No.7; ISDN User Part (ISUP) version 3 for the international interface; Part 15: Diversion supplementary services [ITU-T Recommendation Q.732, clauses 2 to 5 (1997), modified]
standard by European Telecommunications Standards Institute, 08/01/1998
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