Technical information

Chapter 1: Introduction to AT+i Commands
May 31, 2008 AT+i Commands Reference Manual 1-7
General AT+i Command Format
The AT+i command has the following general format:
AT+ i<cc>[<del>[<parameter> | #UFn]…]<CR>
The following table gives a short explanation of the fields:
AT+i Commands by Category
Table 1-1 gives a description of AT+i commands by categories.
Parameter Description
<cc> (or <par>)
2-4 letter command code (<cc>) or parameter name (<par>)
<del> Delimiter: '=', '~', '?', ':', ‘,‘
<parameter> Optional parameter or data. If <parameter> includes a <del>, as
defined above, it must be enclosed in single (') or double (") quotes.
The terminating <CR> is considered as a terminating quote as well.
#UFn User-field macro substitution.
<CR> Carriage Return line terminator (ASCII 13).
Table 1-1: AT+i Commands by Category
Command Function Parameters/Description
AT+i Command prefix Required to precede all commands.
Host Interface
En Echo Mode n=0 Do not echo host characters.
n=1 Echo all host characters (default upon power-up).
Parameter Database Maintenance
<par>=value
-or-
<par>:value
Set parameter value stored in parameter <par> in nonvolatile memory.
<par> retains set value indefinitely after power down.
<par>~value Assign single session
parameter value
value is assigned to parameter <par> for the duration of
a single Internet session. Following the session, the
original value is restored.
<par>? Read parameter Parameter value is returned.
<par>=? Parameter allowed values Returns the allowed values for this parameter.
FD Factory Defaults Restores all parameters to factory defaults.
Status Report
RP<i> Request status report Returns a status report value based on <i>.