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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

slis

SLIS
Satellite Link Interception System

General Features, Operations and Characteristics

Interception of global and regional satellite communication operators (“Intelsat”, “Eutelsat”, “Arabsat”, “Domsat”, “Indosat”, etc.) including VSAT and DCME.

The information sources includes:

  • Speech data (telephone talks);

  • Fax messages (analogue or digital);

  • Short text messages;

  • Communication sessions using public (the Internet) or private networks;

  • Videoconferencing communications.

Functionally the SLIS system incorporates 7 independent subsystems used to receive and process most common systems employed in satellite communications:

a. SLIS‐RF

  • System for reception, amplification and transmission of high‐frequency signals coming from satellite antenna assemblies to reception and processing systems, as described below;

b. SLIS‐E1

  • Reception and processing subsystem for E1 channels

  • Provides reception and processing of high‐speed communication lines, corresponding to E1/T1 standard, and their derivatives;

c. SLIS‐MX

  • Subsystem for reception and processing of static and dynamic multiplexing channels

  • Provides reception and processing of a wide range of communication lines (as regards speed and type of equipment);

d. SLIS‐DI

  • Subsystem for reception and processing of data transmission channels

  • Provides for reception and processing of communication lines used in public and private computer networks;

e. SLIS‐VS

  • Subsystem for reception and processing of VSAT communication channels

  • Provides for reception and processing of communication lines, only corresponding to different standards of the global VSAT system;

f. SLIS‐GA

  • Subsystem for reception and processing of satellite communication channels used for transporting of information of GSM‐operators (GSM‐A, Abis)

  • Provides reception and processing of communication lines transmitting information between base stations and switching centers of cellular operators;

g. SLIS‐DB

  • Subsystem for accumulation and storage of received information

  • Provides long‐term storage of organized information, sorting and processing of operator enquiries, generation of reports and recommendation.


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