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.

3.1USER 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.

3.2AT 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.

4/4