3Com Courier Reference page 162

B-6 A B: A
PPENDIX LPHABETIC
C S
OMMAND UMMARY
Command Function
&B2
The serial port rate MUST be equal to or higher than the &Nn rate.
.
Command Function
&Cn Controls how the modem sends a Carrier Detect (CD) signal to
your computer.
&C0
&C1
&Dn Control how the modem responds to Data Terminal Ready (DTR)
signals.
&D0
&D1
&D2
&D3
&Fn Load one of the three configuration templates that are stored
permanently in read-only memory. Appendix C, Flow Control
Templates, lists the settings for each template.
To load a template into current memory, enter AT&Fn. To write
a template to NVRAM, enter AT&Fn&W.
If DIP switch 1 is OFF, &F0 is always loaded into memory at
power-on or reset.
&F0
&F1
&F2
&Gn Set guard tones for international calls.
When answering calls, use the fixed rate for ARQ
calls and variable rates for non-ARQ calls.
CD always ON, even if the modem is not on line.
Normal operations. The modem sends a CD signal
when it connects with another modem and drops
the CD when it disconnects.
DTR is always ON (ignored).
If issued before connecting with another device,
the Courier V.Everything modem can enter online
Command mode during a call by dropping DTR.
&D1 functions similarly to the escape code (+++).
Return online with the On command, or hang up
with the Hn command.
Normal DTR operations. The modem will not
accept commands unless your computer sends a
DTR signal. Dropping DTR ends a call.
Modem resets with DTR toggle
Load No Flow Control template settings.
Load Hardware Flow Control template settings.
Load Software Flow Control template settings.