Rainbow Electronics GT863-PY - Manual (Page 33)

GT863-PY Terminal Product Description
80269ST10026a Rev. 0 - 27/09/06
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page 33 of 50
3.2 Jammed Detect & Report Extension
3.2.1 Overview
The Jammed Detect & Report feature allows a
Telit GT863-PY to detect the presence of a
disturbing device such as a Communication Jammer and give indication to the user and/or send a
report of that to the network.
This feature can be very important in alarm, security and safety applications that rely on the
module for the communications. In these applications, the presence of a Jammer device can
compromise the whole system reliability and functionality and therefore shall be recognized and
reported either to the local system for countermeasure actions or to the network providing remote
actions.
An example scenario could be an intrusion detection system that uses the module for sending the
alarm indication for example with an SMS to the system owner, and thief incomes using a Jammer
to prevent any communication between the GSM module and the network.
In such a case, the module detects the Jammer presence even before the break-in and the host
controller can trigger an alarm siren, other communication devices (PSTN modem) or directly
report this condition to the network that can provide further security services for example sending
SMS to the owner or police. Obviously this last service depends also from network infrastructure
support and it may not be supported by some networks.