AT Commands
F-18 AT Commands
NOTES
•
The connect message displayed when a V.23 half-duplex connection is
established is CONNECT V.23 HDX.
•
The connect message displayed when a V.23 split-speed connection is established
is CONNECT V.23.
•
When the originating modem is set to normal mode, you must send a few
characters to the answer modem before the modem can fall back to a V.23 half-
duplex connection.
When %F0 is set and the modem is at 1200 bps or higher, it can answer as a V.23 1200/
75 bps modem or a V.23 1200/1200 bps half-duplex modem.
When %F3 is set, the modem can only establish normal or direct 1200 bps half-duplex
connections.
The \S command shows MODEM BPS V.23 when the modem establishes a V.23
connection.
This section lists the commands to configure the modem for each modulation protocol
and mode. Modem connection speeds are in parentheses.
When %F1, %F2, or %F3 is set for V.23 connections:
Protocol
Command
V.23 (TX 75 bps/RX 1200 bps)
Split Serial Port Speed
%F1\W1
V.23 (TX 75 bps/RX 1200 bps)
Constant Serial Port Speed
\W0%F1\J0
V.23 (TX 1200 bps/RX 75 bps)
Split Serial Port Speed
%F2\W1
V.23 (TX 1200 bps/RX 75 bps)
Constant Serial Port Speed
\W0%F2\J0
V.23 (1200 bps half duplex)
%F3
