GSM Intercept

GSM Intercept

GSM Intercept The GSM Intercept was the first real time GSM interception system designed to provide world wide government and law enforcement communities with an investigative tool in the fight against terrorism.

Relying on the GSM Intercept, Law Enforcement and Government Agencies now have the tools they need for lawful interception of cellular telephone conversations. The HSS Group designed this system to operate in real time, enabling law enforcement to track and monitor the activities of suspected terrorists and criminals. This version of GSM Interception for the A5.1 protocol deciphers the encryption format used to secure GSM A5.1 communications.

HSS's GSM monitoring products are, to our knowledge, consisting of the first passive mobile intercept during the 1990s. The "off the air" real time intercept makes this GSM Intercept the earliest system to break the GSM A5.1 encryption algorithm.

It was designed to intercept, decipher, monitor and record up to 32 GSM cellular telephone conversations in a local area that use (A5.0, A5.2, A5.1) encryption.

Available in a configured stand-alone system with all functions in a centralized unit, the GSM interception system has assisted with police investigations all over the world. The dedicated Passive A5/1 and A5/2 Decipher is also available in a centralized configuration where conversations connect to the centralized A5/1 deciphering equipment via data-link or GPRS. This Decipher can handle rerouted calls from up to 8 remote GSM interceptors. These rerouted calls are then deciphered and returned to the GSM Intercept's transmitting units for monitoring and recording. The requirements of a central PC configuration are determined by taking into consideration the number of receiving and recording channels needed.

Here at HSS, it is understood that no two Cellular Phone Systems are alike. They differ by manufacturer, installation date, demographic (country of use), infrastructure and component integration. No two intercept objectives are alike. They differ by client, agency, urgency, risk factors, tactical situations, and geopolitical dynamics. Because GSM Networks vary from country to country, a customized GSM Intercept can incorporate characteristics of the local network.

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