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BS PD CEN ISO/TR 20659‑2:2024
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ITU There are 5137 products.
ITU-T V.51
ITU-T V.51 Organization of the maintenance of international telephone-type circuits used for data transmission
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ITU-T V.53 Limits for the maintenance of telephone-type circuits used for data transmission
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ITU-T V.56 Comparative tests of modems for use over telephone-type circuits
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ITU-T V.100 Interconnection between public data networks (PDNs) and the public switched telephone networks (PSTN)
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ITU-T V.230 General data communications interface layer 1 specification
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ITU-T X.50 Fundamental parameters of a multiplexing scheme for the international interface between synchronous data networks
$10.75 $25.00 -57%In StockITU-T X.50bis
ITU-T X.50bis Fundamental parameters of a 48-kbit/s user data signalling rate transmission scheme for the international interface between synchronous data networks
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ITU-T X.51 Fundamental parameters of a multiplexing scheme for the international interface between synchronous data networks using 10-bit envelope structure
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ITU-T X.51bis Fundamental parameters of a 48-kbit/s user data signalling rate transmission scheme for the international interface between synchronous data networks using 10-bit envelope structure
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ITU-T X.52 Method of encoding anisochronous signals into a synchronous user bearer
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ITU-T X.54 Allocation of channels on international multiplex links at 64 kbit/s
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