With server controlled I/O there are wider possibilities for controlling devices than in the user control mode. In the user control mode it is possible to read continuous information such as the temperature reading and turning something on or off. When server controlled I/O is used, it is also possible to get the temperature reading on a specified frequency: for example, an update could be sent every 10 minutes. You can also set limits for an alarm; if the temperature rises above e.g. –15 degrees, a message is sent to the Internet.

On the Internet the information from the device is interpreted on a network server, and it can be acted upon. An example of the usage of the Server controlled I/O could be a company operating in the process industry. It could have a system consisting of 500 containers and a central monitoring station. If the temperature of one of the containers were to exceed a specific limit, an alarm message would be sent to the monitoring station and to the monitor person. The person would then know exactly where the problem is and would be able to act on it. The information could also be stored on the database for future use and analysis.

4.3RELIABILITY AND ACCESS CONTROL

The Nokia 30 supports normal GSM encryption, GSM security codes, AutoPIN, system monitoring and authentication to ensure the reliability and security of the M2M application.

The Nokia 30, as part of the Nokia M2M Platform, offers reliability through a supervised data pipeline. Supervision is provided by effective and reliable methods for controlling the terminals and the application via CORBA method calls. Connection between the Gateway and the Nokia 30 is mutually authenticated to prevent any intervention. Additional methods for security and encryption can be completed by the application.

With the Nokia 30’s reliability features and supervision provided by the Nokia M2M Platform, full control of a customer’s M2M application is possible. Messages are passed to the correct destination, in the correct form, in a way that can also be tracked.

GSM encryption

The Nokia 30 supports normal GSM encryption for end-user privacy.

GSM security codes

The Nokia 30 supports the following GSM security codes:

•PIN

•PIN2

•PUK

•PUK2

•SECURITYCODE

•CALLBARRINGCODE

Security codes can be changed via the Nokia 30 Configurator (see Chapter 7.4) as well as from the network and from the application module.

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