SS-ETS-300064 › Historical Revision Information
Integrated Services Digital Network (ISDN) - Direct Dialling In (DDI) supplementary service - Digital Subscriber Signalling System No. one (DSS 1) protocol
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Integrated Services Digital Network (ISDN) - Direct Dialling In (DDI) supplementary service - Digital subscriber signalling system No. one (DSS1) protocol
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33.020 (Telecommunications in general Including infrastructure)
Designation Name
SS-ETS 300064
Revision Level
EDITION 1
Status
Superseded
Publication Date
Jan. 29, 1992
Language(s)
English