
TECHNICAL REFERENCE
2
Typing Commands
• 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 &F1Hardware Flow Control template loaded in NVRAM when the modem is
shipped. Defaults are listed in italics.
Note: Defaults are marked with an asterisk (*).
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