2002 Nokia Corporation. All rights reserved.8
M2M system mode
In the M2M system mode, the Nokia 31 terminal is combined with the Nokia M2M Gateway to
form a complete, wireless end-to-end solution for machine communication.
Some of the enhanced M2M features incorporated into the Nokia 31 terminal include:
enhanced reliability and security
automatic reset if the connection between the Nokia 31 terminal and the application module
is found to be broken
mutual authentication between the Nokia 31 terminal and the Nokia M2M Gateway
data can be exchanged using CORBA method calls integrated in the application module
User control mode
User control mode enables simple applications to be controlled by mobile handsets with text
messages (Short Message Service). The control or monitoring is through general-purpose inputs
and outputs of the M2M System connector of the Nokia 31 terminal. Text message templates that
are sent from the mobile to the Nokia 31 terminal instruct the terminal, which in turn controls a
device or system, attached to it through the M2M System connector.
DATA CONNECTIONS AND MESSAGING
The Nokia 31 terminal supports four GSM wireless network data protocols.
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General