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Spaces entered into a command string for clarity between the AT prefix and the body of the
command are ignored. Likewise, spaces entered for clarity within the command body between
alpha characters and decimal parameters are ignored.
The backspace or delete keys can typically be used to edit commands.
Characters that precede the AT prefix are ignored.
Ctrl-x can be used to abort a command line input.
Consider the following six commands to be entered in a single command line:
ATX0
(set basic command ATXn to n=0)
AT&V
(execute basic command AT&V)
AT+GSN
(execute extended command AT+GSN)
AT+CMEE=?
(query the valid range of responses of extended command AT+CMEE)
AT+CPBR=1,12 (execute extended command AT+CPBR with parameters 1 and 12)
AT–MSVTR?
(query the current setting of extended command AT–MSVTR)
The following are valid single command line entries of above six commands:
at x 0 &v +gsn +cmee=? +cpbr=1,12 -msvtr?
(all lower case)
AT X 0 &V +GSN +CMEE=? +CPBR=1,12 –MSVTR?
(all upper case)
ATX 0 &V +GSN +CMEE=? +CPBR=1,12 –MSVTR?
(space omitted between AT and X)
ATX0 &V +GSN +CMEE=? +CPBR=1,12 –MSVTR?
(space omitted between ATX and 0)
ATX &V +GSN +CMEE=? +CPBR=1,12 –MSVTR?
(0 omitted from ATX0)
ATX;&V;+GSN;+CMEE=?;+CPBR=1,12;–MSVTR?
(semicolon separators)
ATX&V+GSN+CMEE=?+CPBR=1,12–MSVTR?
(no separators)
A.6 Command Responses
A result code is sent to the DTE in response to the execution of a command. It may also occur
unsolicited from other conditions such as an incoming call (e.g. RING). Responses returned as a result of a
query are called information responses.
Result codes can be represented by text if the A3LA-RM is in verbose mode or with numbers if in
numeric mode. The command ATVn informs the A3LA-RM whether to respond in verbose or numeric mode.
Further note that responses can be suppressed by setting the command ATQn to ATQ1. Table below shows
the difference in format between these modes.
Numeric Mode
ATQ0 ATV0
Verbose Mode
ATQ0 ATV1
Result codes
<NUMERIC_CODE><CR>
<CR><LF><VERBOSE_CODE><CR><LF>
Information Responses <TEXT><CR><LF>
<CR><LF><TEXT><CR><LF>