The SCL-5020 is a multi-channel Passive GSM Monitoring system, 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.

The system is equipped with a decryptor module which is capable of handling and decrypting the A5.0, A5.2 encryption protocols in real-time. The system is available in configurations of 2, 4,8,16 Duplex channels.

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.

Automatic tuning of receivers, with a possibility of scanning and recognition of control channels and communication system parameters

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.

All intercepted communications are stored in hard disk of the processing PC, which can be easily accessed by the operators.

Possibility of round-the-clock operation without the operator’s involvement.

Several GSM systems located at different geographic locations can be controlled using LAN/WAN.

The system can be accessed and controlled remotely from anywhere in the world through a secure VPN.

Optional Advanced Analysis Package which offers a host of features including Customized Search based on all intercepted CRI parameters, Keyword Spotting in SMS, Alerts on Hot Targets, Automatic Archiving of intercepted Data , Adding Call Synopsis, Audio Enhancing And Amplifying etc.

Optional ClassMark analysis software.