Cellular Control and Detection Systems

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Cellular Control and Detection Systems

CJAM-CPC provides an effective solution for controlling the use of contraband cell phones in jails. It is based on a cellular testing system and is capable of successfully preventing the unlawful use of mobile phones by prisoners in correctional institutions.  It can stop inmates from using cell phones to commit crimes and offers the best means of providing security to jail facilities. GSM and CDMA communication methods can be used by the system which provides a very user friendly service with interfaces for both the hardware and software solutions.

RF receivers and RF signal generators are used by the CJAM-CPC system to control and monitor the operations of cell phones. It is used for both Forward as well as Reverse channels with the use of the GPS receiver. When the GSM and CDMA networks are under test, the CJAM-CPC is able to fire signals accurately and synchronize them precisely with the networks.

The CJAM-CPC has its own chassis and provides connectivity with an integrated Ethernet port. The CJAM-CPC comes as a standalone version and is easily portable, providing flexibility of use when needed. The CJAM-CPC standalone version is self-contained and has a keyboard as well as a screen a integrated d Ethernet interface.

The DAS, or the CJAM’s Distributed Antenna System, can cover facilities of almost any size with its flexible coverage area. If placed in a central position, it is capable of covering several buildings in the facility. The CJAM-CPC can also be used in combination with the system for cellular location (CJAM-DT) along with the system for cellular jamming. This combination can be the most comprehensive solution for all security related problems in jails, with the use of a single DAS.

What are the uses of the CJAM-CPC?

  • The correctional institute is provided complete control over the illegal use of cell phones by prisoners in jails.

CJAM-CPC – Main Features:

  • The coverage is available for all types of standard cellular bands, such as 450/850/900/1800/1900/2100 MHz, or Standard 800/1900
  • The SIM of any cell phone can be disabled in a specific area until power cycling.
  • Ringing the cell phone
  • Cell phones can be excluded from the monitor
  • A GPS receiver is provided for mapping and tracking features
  • Listing each of the cell phones in a specific area along with their service providers.
  • Determining the total count of mobile phones that are being operated in a specific area. Additionally, determining the MIN, PRN, PRL, and ESN for CDMA.
  • Can produce a record of the mobile phones with IMSI, TMSI and IMEI for GSM.

How does the CJAM work?

The controller and operator console of CJAM-CPC are connected to the DAS, Distributed Antennae System, of the building. The uplink RF signals and the downlink RF signals are then sent all over the facility buildings. If any inmate makes a call from a banned cell phone, the illegal cell phones will attach to the DAS. This is because cell phones are manufactured in such a way as to attach themselves to the antenna providing the strongest signal. When the cell phone used illegally by the inmate attaches itself to the in-building DAS, any calls made or received by the cell phone will be monitored by the CJAM-CPC system by means of monitoring the RF frequencies of the cell phone. In this way the CJAM-CPC system can detect any banned use of cell phones with the help of the unique identification number given to them.

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

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Cellular Control and Detection Systems


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