V.28
communications, standard
An ITU-T physical interface standard for serial data communications equipment, formally titled “Electrical Characteristics for Unbalanced Double-Current Interchange Circuits”. The combination of V.28 and V.24 is equivalent to the EIA’s RS-232 and uses the same 25-pin connectors.
(2001-04-06)
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- Utx
UTX United Technologies Corp.
- V.32bis
communications, standard V.32 twice. An extension of the ITU-T V.32 modem protocol allowing 14400 bits per second with fall back to 12000bps, 9600bps, 7200bps and 4800 bps. The modem should select the appropriate speed according to the current line conditions. See also V.32ter. (1994-12-15)
- V.32ter
An extension of the ITU-T V.32bis modem protocol. While waiting for V.34, many modem manufacturers decided to extend V.32bis to 19.2 kbps. This was known as V.32ter which some marketroids rechristened V.32 terbo which is not only misspelled but misses the fact that V.32ter means the third revision of V.32. (1994-12-15)
- V.34
protocol An ITU-T standard modem serial line protocol using symbol rates of 2400, 2743, 2800, 3000, >3200 and 3429 and up to 28800 bits per second. The official V.34 draft recommendation was titled: Modem operating at data signalling rates of up to 28 800 bit/s for use on the general switched telephone network and on […]