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ETSI EN 300 450
- Access and Terminals (AT); Ordinary and Special quality voice bandwidth 2-wire analogue leased lines (A2O and A2S); Terminal equipment interface
- standard by European Telecommunications Standards Institute, 07/01/2001
- Publisher: ETSI
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Specification of the terminal equipment side of the interface and test procedures for compliance. Revision of ETS 300 450 to improve the safety related text following a liaison received from TC Safety.