ETSI EN 300 451

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ETSI EN 300 451 English PDF Access and Terminals (AT); Ordinary quality voice bandwidth 4-wire analogue leased line (A4O); Connection characteristics and network interface presentation

standard published 07/01/2001 by European Telecommunications Standards Institute

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Specification of the public network side of the interface and the performance of the leased line service, including test procedures for compliance Revision of ETS 300 451 to improve the safety related text following a liaison from TC Safety.