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Apparatus with one or more particular functions for connection to certain public switched telephone networks. Specification for series connected apparatus. Apparatus having maximum allowable impairments
BS 6789-6.1 – Apparatus with one or more particular functions for connection to certain public switched telephone networks. Specification for series connected apparatus. Apparatus having maximum allowable impairments
The values given for electrical characteristics represent the maximum impairment that may be introduced between a terminal apparatus and the NTP of Complete Branch System.
