analog circuit

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V The letter used by the CCITT to categorize standards relating to data communications over telephone (analog) circuits; the number following the letter identifies a particular standard. Some of the more important standards in the V-series are listed:

V21

300 bps data transmission;

V23

multispeed operation, with differing bit-rates on the incoming and outgoing circuits, at speeds up to 1200 bps;

V24

functions of the circuits, and operating procedures for 25-pin serial interfaces;

V28

further details relating to V24;

V35

standards for data transmission at speeds up to 48 Kbps.


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