AT&T DataPort PCX Modem User Manual page 43

AT Commands and S-Registers
Table B-1. AT Command and S-Register List (4 of 21)
AT Command/
S-Register
DS= n
E n
F n
B-4
Issue 2
Description
DIAL STORED NUMBER
Dials telephone number stored in directory location n
(where n is a number, 0–3). The DataPort PCX
modem supports four telephone directory entries.
(See &Z.)
COMMAND CHARACTER ECHO
Controls whether characters entered at your keyboard
are displayed on your monitor when the modem is in
command mode.
E, E0 Disables echo
E1 Enables echo
SELECT LINE MODULATION
Controls the line modulation and VF rate and modifies
the setting of N n.
F0 Selects auto-detect mode. All supported
speeds and modulations are available
for selection by the remote modem.
F1 Selects V.21 or Bell 103J (300 bps)
according to the setting of B n .
F2 Not supported.
F3 Selects V.23. The originating modem's rate
is set to 75 bps, and the answering
modem's rate is set to 1200 bps.
F4 Selects V.22 or Bell 212A (1200 bps)
according to the setting of B n .
F5 Selects V.22bis (2400 bps).
F6 Selects V.32bis or V.32 at 4800 bps.
F7 Selects V.32bis at 7200 bps.
F8 Selects V.32bis or V.32 at 9600 bps.
F9 Selects V.32bis at 12,000 bps.
F10 Selects V.32bis at 14,400 bps.
July 1995