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ETSI ETR 080

M00000840

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ETSI ETR 080 Transmission and Multiplexing (TM); Integrated Services Digital Network (ISDN) basic rate access; Digital transmission system on metallic local lines

standard by European Telecommunications Standards Institute, 07/01/1993

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Description of transmission properties of local networks for design of transmission system using metallic pairs of wires. Based on requiremts specified in ISDN basic access digital section spec. Tow digital trans -mission systems described in Annexes, with optional characteristics given in corresponding Appendices.