Dte Controlled Fallback Rate (Pin 23) - *Fb; General Commands; Changing From Data Mode To Command Mode; Chapter 5. At Commands (Continued) - Motorola V.3600 User Manual

AT Commands
DTE Controlled Fallback Rate (Pin 23) — *FB
Pin 23 of the EIA-232 DTE connector provides signal input to the
modem for DTE fallback. If the modem is not using DTE fallback, set
this option to ignore pin 23. To cause the modem to act on high/low
levels of pin 23, enable this option. Negative level forces a higher rate
for primary data rate; positive forces a lower rate providing a fallback
rate.
Command
*FB
*FB1

General Commands

This series of commands controls various standard options that in most
cases apply to any mode of operation.
Changing from Data Mode to Command Mode — +++
To exit data mode and go to online command mode, press the escape
character three times (+ is the default). Pause for the length of time set
by register S12 (1 second is the default) before and after the +++ to
ensure the modem recognizes the escape command.
This sequence temporarily suspends data mode transmissions and
allows command mode operations without breaking or otherwise
disturbing the telephone line connection. The modem responds with OK
when it detects the escape code. Return to data mode by entering the O
command.
Note
The AT command set must be enabled.
Local Character Echo — E
Type AT without a carriage return. If the screen shows AT character,
echo is correct. Proceed with other commands as desired.
If the screen shows AATT, enter the E command to correct the double
characters or disable character echo by the modem.
5-22
Operation
Ignore pin 23
Transition on pin 23 changes speed
V.3600