iTegno 39XX GPRS Modem
AT Commands Guide
02000C17
•
v1.5
Confidential
All specifications are correct at the time of release. iWOW Connections owns the proprietary rights to the information contained herein this
document. It may not be edited, copied or circulated without prior written agreement by iWOW Connections Pte Ltd. © 2011, 2012 iWOW
Connections Pte Ltd
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2
AT COMMANDS FEATURES
2.1
Serial Link Settings
The serial link handler has the following factory settings:
115200 bps baud rate(option to configure to other baud-rate upon customer’s request)
8 bits data
1 stop bit
None parity
RTS/CTS flow control
The coIPR, +IFC, +ICF can be used to configure the Serial Link.
2.2
AT Commands Syntax
To control the GSM/GPRS module, one can simply send the AT commands via its serial interface.
Commands always start with the prefix “AT” or “at’ and end with the command line <enter> or <CR> character.
Parameters shown in the bracket [] are optional, which means when the command is executed without these
parameters, their default values are used.
Several AT commands may be combined on the same command line. This eliminates the need to type “AT” or
“at” repeatedly for each command and is only needed once at the beginning of the command line. The
semicolon “;” must be used as a command separator.
Note:
Appending AT commands should generally be avoided, as the expected response might not be received.
For most command syntaxes except for ATV0 and ATQ1, responses start and end with <CR><LF>
If command line has been executed successfully, an “OK” is returned
If command syntax is incorrect, the “ERROR” string is returned.
If command syntax is correct but transmitted with wrong parameters, the “+CME ERROR:
<err>” or “+CMS ERROR” <SmsErr>” string is returned in case CMEE was previously set to 1 and only
“ERROR” in case CMEE is set to 0 (default value)
