Interface signal definitions, Power indication (pwi), Call request (crq) – Northern UTA220/UTA220k User Manual

Page 62: Data line occupied (dlo), Distant station connected (dsc), Digit signal circuits (nb1-nb8)

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Interface signal definitions, Power indication (pwi), Call request (crq) | Data line occupied (dlo), Distant station connected (dsc), Digit signal circuits (nb1-nb8) | Northern UTA220/UTA220k User Manual | Page 62 / 187 Interface signal definitions, Power indication (pwi), Call request (crq) | Data line occupied (dlo), Distant station connected (dsc), Digit signal circuits (nb1-nb8) | Northern UTA220/UTA220k User Manual | Page 62 / 187
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