At Command Mode - Nokia 31 User Manual

The Nokia 31 terminal can be combined with the Nokia M2M Gateway to provide wireless
connections (Text Messaging, USSD, GPRS, CSD) for machine-to-machine communications. This
combination forms part of an application solution which can remotely monitor or control a pool
of devices or to connect them with existing systems.
With the Nokia 31 terminal connected to a machine through a control application, you can
remotely control a pool of devices and receive status information. The Nokia 31 terminal can be
easily integrated into various applications such as vending, security and meter control.
As an M2M communications device, the Nokia 31 terminal can be used in three operation modes:

AT command mode

M2M system mode
User control mode
AT command mode
In the AT command mode, the Nokia 31 terminal operates as a wireless modem. The wireless
connection is established and data is sent using AT commands. The AT commands which are used
to control the Nokia 31 terminal can be found in the AT Command Guide found on the Nokia 31
CD-ROM or www. americas.forum.nokia.com.
By physically connecting the Nokia 31 terminal to the RS-232 data adapter, the terminal can be
connected to a compatible PC and used as a stand-alone GSM wireless modem. The modem uses
normal communication applications such as e-mail, fax and Internet browsers.
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U.S. English
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