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GIS

IRIDIUM Interception System

Satellite Link Interception System

Thuraya Advanced Interception System

Passive GSM Interceptor

Active GSM Interceptor

3G-Cat

Passive CDMA Interceptor

GTReS
GSM Traffic Recording System

General Features, Operations and Characteristics

GTReS is a multi-band fully passive GSM interception system designed to record the entire traffic occurring between Base Transmitting Stations (BTS) and Mobile Stations (MS) located within the system’s operational range. This means literally tens or even hundreds of simultaneous calls.

“Fully passive” means that:

  • GTReS does not have any transmitting parts;
  • GTReS does not interfere with GSM networks and mobile phones; 
  • GTReS’ operation is completely undetectable.

Recorded information can be processed either on-line or off-line.

GTReS can intercept:

  • Voice communication;
  • SMS messages;
  • Primary and secondary DTMF tones;
  • Call related information

Deciphering capabilities:

The system supports both types of encryption implemented in GSM networks – A5/1 and A5/2.

A5/2 real-time decipher is a software based solution; it works as a background application. Average deciphering time is 15 msec.

A5/1 decipher is a separate device connected directly or remotely to the GTReS.

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