Technical Reference; Typing Commands; Basic Data Commands - 3Com U.S. Robotics 56K Voice User Manual

Technical Reference

Type commands in either upper or lower case, not a combination.
Use the Backspace key to delete errors. (You cannot delete the
original AT command since it is stored in the modem buffer.)
If a command has numeric options and you do not include a
number, zero is assumed. For example, if you type ATB, the
command ATB0 is assumed.
Every command except A/, +++, and A> must begin with the
AT prefix and be entered by pressing ENTER.
The maximum command length is 58 characters. The modem does
not count the AT prefix, carriage returns, or spaces.
All defaults are based on the &F1
loaded in NVRAM when the modem is shipped. Defaults are listed in
italics.
<control key>S
<control key>C
<control key>K
$ Use in conjunction with D, S, or & commands (or just AT)
to display a basic command list; online help.
A Manual Answer: goes off hook in answer mode. Pressing any
key aborts the operations.
A/ Re-executes the last issued command. Used mainly to redial.
Does not require the AT prefix or a Carriage Return.
A> Re-executes the last issued command continuously, until the user
intervenes or the command is executed. forever. Does not require
the AT prefix or a Carriage Return.
52 56K Voice Faxmodem Internal - User's Guide

Typing Commands

Hardware Flow Control template

Basic Data Commands

Stop or restart help screens.
or
Stop help screens.