SS-ETS-300439 › Business TeleCommunications (BTC) - Transmission characteristics of digital - PrivateBranch eXchanges (PBXs)
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Business TeleCommunications (BTC) - Transmission characteristics of digital - PrivateBranch eXchanges (PBXs)
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33.020 (Telecommunications in general Including infrastructure)
Designation Name
SS-ETS 300439
Revision Level
EDITION 1
Status
Superseded
Publication Date
Jan. 24, 1997
Language(s)
English
International Equivalent
ETS 300439:1997(IDT)