ETS 300 368-1995 Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT) Supplementary Service Functional Capabilities and Information Flows
ETSI - European Telecommunications Standards Institute
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ETS 300 368-1995
ETS 300 368-1995 history
1995ETSI PRETS 300 368-1995 Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT) Supplementary Service Functional Capabilities and Information Flows
1994ETSI PRETS 300 368-1994 Integrated Services Digital Network (ISDN); Explicit Call Transfer (ECT) Supplementary Service Functional Capabilities and Information Flows