Passive GSM Interception System with Online Decoding

Multi-Channel Passive GSM Monitoring system is designed to intercept Voice and SMS communications and protocol information from a GSM 850/900/1800/1900 network. To prevent detection of the system's operation and avoid interference to the operation of cellular network the SCL- 5020 works as a passive equipment intercepting data directly from the air (Um interface) making it undetectable by the cellular operator as well as the suspect. Features and Specifications: 100% Passive System. The system does not transmit any information and hence cannot be detected. Interception and Monitoring of Short Message Service (SMS) and Voice communications on GSM 850/900/1800/1900 MHz Networks.   On-line monitoring of up to 16 duplex calls at a time, multiple systems can be cascaded together to achieve higher number of channels. Available in stationary or mobile variants. Capable of handling A3 & A8 authentication and key generation algorithms. Real-Time passive eeciphering of A5/2, A5/0 encryption. Monitoring of both forward and reverse channels (Full duplex conversation). Capable of monitoring both incoming and outgoing communications. Selection of the Targets by different parameters such as IMEI, IMSI, TMSI, and target distance from the base station, type of target handset (ClassMark), target’s dialled & received number (PLMN). Capable of calculating the target’s distance from the base station using the timing advance function of the GSM network . Inbuilt automatic paging system to obtain target parameters like IMEI/IMSI, TMSI, ClassMark, Target distance from base station etc. with only the prior knowledge of the targets actual mobile number.


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Shoghi Communications limited had its roots deep in Strategic Electronics, Analysis and Surveillance. We are a multifaceted solution provider in the field of Encryption Technologies, System Engineering and a leading provider of Analysis and Surveillance solutions.

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