Paradyne COMSPHERE 3821Plus User Manual page 154

S-registers
Sync Dial
synchronous transmission
tone dialing
training
UL
UNIX Dial
USOC
V.17
V.22
V.22bis
V.25bis
V.27ter
V.29
V.32
V.32bis
V.32terbo
V.34
V.42
3821-A2-GB20-30
Registers that contain information affecting modem operation. S-register commands
must be preceded by the AT prefix.
A factory preset configuration area containing configuration options most often used in
synchronous dial networks.
Data transmission that is synchronized by timing signals. Characters are sent at a fixed
rate. This type of transmission is more efficient than asynchronous transmission.
One of two dialing methods, in which telephone numbers are sent as tones across the
telephone lines.
A process where two modems try to establish a connection over the VF line.
Underwriter's Laboratories, Inc.
A factory preset configuration area containing the configuration options most often used
in a UNIX dial network.
Universal Service Ordering Codes.
A fax communications standard for modems operating half-duplex with synchronous
data at 14,400 bps.
A standard for modems operation full-duplex with asynchronous or synchronous data at
1200 bps over the dial network (PSTN).
A standard for modems operating full-duplex with asynchronous or synchronous data at
1200 or 2400 bps over the dial network (PSTN).
A dialing protocol that permits direct and stored-number dialing in asynchronous,
bisynchronous, or HDLC modes.
A fax communications standard for modems operating half-duplex with synchronous
data at 2400 and 4800 bps.
A fax communications standard for modems operating half-duplex with synchronous
data at 7200 and 9600 bps.
A standard for modems operating full-duplex with asynchronous or synchronous data at
4800 or 9600 bps on switched (dial) or leased telephone lines.
A standard for modems operating full-duplex with asynchronous or synchronous data
over dial networks (PSTN) or leased lines at 14,400, 12,000, 9600, 7200, or 4800 bps.
A proprietary standard for modems operating full-duplex with asynchronous or
synchronous data over dial networks (PSTN) or leased lines at 19,200 or 16,800 bps.
The terbo is a pun on turbo and ter; the next iteration of the V.32 recommendation, had
one been finalized, would have been V.32ter.
A standard for modems operating full-duplex with asynchronous or synchronous data
over dial networks (PSTN) or two-wire leased lines at 33,600, 31,200, 28,800, 26,400,
24,000, 21,600, 19,200, 16,800, 14,400, 12,000, 9600, 7200, 4800, or 2400 bps.
ITU-T standard for error control protocol.
February 1998
Glossary
Glossary-7