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3. OPERATING MODES
The Nokia 30 supports three operation modes from which the best suited one for the
application can be chosen.
The User control mode is especially designed with man-to-machine and machine-to-man
communications in mind. One can easily control simple applications built using the services
of the Nokia 30 with a mobile handset.
The AT command mode offers efficient point-to-point communications through the modem
capabilities of the Nokia 30.
The M2M System mode in turn takes in full use all the advanced services offered by the
Nokia 30. In the M2M System mode, the Nokia 30 functions as a part of the intelligent Nokia
M2M Platform that offers seamless wireless communications for different machine-to-
machine solutions.
3.1 USER CONTROL MODE
In the user control mode the Nokia 30 GSM Connectivity Terminal is controlled by a mobile
phone. Text message templates that are sent from the mobile to the Nokia 30 instruct the
terminal, which in turn controls a device or machine attached to it through the M2M System
connector.
An example of a device attached to the Nokia 30 for wireless control would be a refrigerator.
You might want to check the temperature of the refrigerator when out of town. The
temperature of the refrigerator could be altered with the mobile as well. You could also turn
off the lights of the apartment that you had accidentally left on by sending a text message
template.
There are three levels of access control for the User control mode. Firstly, a message
identifier entered when the terminal is used for the first time with the Nokia 30 Configurator is
only known by the person who entered it. This identifier begins every text message template
aimed to control the Nokia 30 and the application attached to it. Secondly, it can be specified
from which phone number the text message templates are allowed. Thirdly, a password can
be used that is entered whenever a text message template is sent to the Nokia 30.
3.2 AT COMMAND MODE
Besides the User control mode, the Nokia 30 can also be used in AT command mode. In this
mode, the terminal can be used as a wireless modem for data and fax communication when
attached to a PC or a compatible device. In addition to this, the terminal can be controlled
directly with AT commands by different machines and devices, for example.
Data modem usage is enabled with an RS-232 data adapter connected to the Nokia 30; see
Figure 6. The RS-232 adapter has a connector for the standard RS-232 data cable. The RS-
232 data cable is then connected to a PC or another compatible device. In addition to this,
AT commands are also available via the M2M System Connector.