CJM CPC – A Detection and Control

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When unauthorized cell phone calls are made or received by inmates in prisons, it can be controlled using the system offered by CJAM-CPC. This program works on a system for cellular testing and can tackle the problem of banned calls made by prisoners through the use of cell phones, while committing a crime or at other times and can provide a completely security solution for prisons within the facility. Both CDMA and GSM communication can be detected with the help of the system and it provides a very user-friendly service as the interface provided can be used for software and hardware applications.

The solution provided by CJAM-CPC system works by interacting with and monitoring the cell phones using the RF receivers and signal generators. These signals are used in the Forward and Reverse channels and with the aid of a built-in GPS, the CJAM-CPC receiver can fire signals and perfectly synchronize them with the tested CDMA and GSM networks.

The CJAM-CPC system functions under its own chassis and the Ethernet port is integrated within this structure. It is a standalone version that can be independently used with maximum portability wherever needed. The model of the CJAM-CPC system is fully self contained and comes with all accessories, such as keyboard and screen as well as an integrated Ethernet interface.

The CJAM is capable of covering and controlling any size of facility with the help of the Distributed Antenna System or DAS. The CJAM-CPC could be optionally placed in the center of the facility and in this way it will be able to cover multiple buildings within the area. When used jointly with the CJAM-NF, system for Cellular jamming, and the CJAM-DT, system for Cellular location, the CJAM-CPC can tackle almost all security issues related to the contraband use of cell phones all with a single DAS.

Different uses of the CJAM-CPC:

  • It is useful in prisons for controlling and monitoring the use of contraband cell phones by prisoners.

Main Features of CJAM-CPC

  • Cell phones can be excluded from the monitor
  • Ringing of the cell phone is enabled
  • Disabling of the SIM of any cell phone in the specified area is possible, until power recycling
  • All standard cellular brands ranging from 450/850/900/1800/1900/2100 MHz are possible (Standard 800/1900)
  • In a specified area, it can produce a history roll of the mobile phones with IMSI, TMSI and IMEI for GSM
  • All the cell phones in the specified area can be listed along with the provider to which the phone is connected
  • The system can determine the number of cell phones that are being operated in the specified area along with the ESN, MIN, PRN and the PRL for CDMA
  • The system is equipped with a GPS receiver enabling the tracking/mapping features for cell phones

How CJAM works

The controller and operator console of the CJAM-CPC have to be connected with the DAS, the in-building Distributed Antennae System.  Uplink RF signals and downlink RF signals are propagated all the way through the facility or the prison buildings.  When inmates use contraband cell phones, the signals get connected to the DAS, as it has the strongest signal in the area and cell phones are made to connect with the strongest signal producing antenna. If the unauthorized cell phone is used for making or receiving calls by inmates in the correctional institute, when connected to the DAS, the cellular RF signals are detected by the CJAM-CPC system as each cell phone has its own specific and unique identification number.

Ref: http://www.cjam.com/index.php?id=cellularcontrol

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CJM CPC – A Detection and Control

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