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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.
4.3 RELIABILITY 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.