AT&T DataPort PCX Modem User Manual page 83

Glossary
V
V.17
A CCITT fax communications standard for modems operating
half-duplex with synchronous data at 14,400 bps.
V.21
A CCITT standard for modems operating full-duplex with
asynchronous or synchronous data at 300 bps over dial
telephone lines.
V.22
A CCITT standard for modems operating full-duplex with
asynchronous or synchronous data at 1200 bps over dial
telephone lines.
V.22bis
A CCITT standard for modems operating full-duplex with
asynchronous or synchronous data at 2400 or 1200 bps over
dial telephone lines.
V.23
A CCITT standard for modems operating full-duplex with
asynchronous or synchronous data at 1200 or 600 bps over dial
or leased telephone lines.
V.27ter
A CCITT fax communications standard for modems operating
half-duplex with synchronous data at 2400 and 4800 bps.
V.29
A CCITT fax communications standard for modems operating
half-duplex with synchronous data at 7200 and 9600 bps.
Issue 2 July 1995
GL-11