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Siretta Ltd
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Reading
Berkshire RG7 1PW
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7
ZETA Series
GPRS/UMTS/LTE Terminal with GPIO
AT Commands
The ZETA range of wireless modems has a GSM engine at its heart which can be
controlled via the serial interface using standard AT commands.
The AT command is an ATTENTION command and is used as a prefix to other
parameters in a formatted string. The AT command combined with other parameters
can be sent to the modem with your preferred terminal emulator package (TMSTerm/
TeraTerm/HyperTerminal) and typed in manually as a command line instruction.
The wireless module is compliant with the following AT command formats:
1) Hayes standard AT command set, in order to maintain the compatibility with
existing SW programs.
2) 3GPP 27.007 specific AT command and GPRS specific commands.
3) 3GPP 27.005 specific AT commands for SMS (Short Message Service) and CBS
(Cell Broadcast Service)
4) FAX Class 1 compatible commands
5) Proprietary command set, the module family also supports a proprietary set of AT
commands for special purposes outside of the standard AT specification.
To obtain the latest AT command reference guide
*
with a full list of supported AT
commands, please contact your Siretta representative or alternatively visit:
www.siretta.co.uk
NOTE -
This following document refers to useful AT commands throughout and offers
descriptions of how to use the AT commands with the ZETA wireless modems.
*
For GPRS modems refer to the GPRS AT Command Manual, for UMTS modems refer to the
UMTS AT Command Manual.
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