JAMMER IN PRISON

How to avoid the mobile phone usage in the cell
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Beside tightened controls in penal institutions the purposeful repression of mobile signals by jammers from the point of view of many federal state governments can be a proved device, to handle the problem of the illegal usage of mobile devices by prisoners.

In the meantime nearly all European countries are considering the application of jammers in penal institutions.

Basically there exist from the technical point of view two possibilities. One of both involves generating a noise through generators in cell areas on the frequencies 900 and 1800 MHz (D-net, E-net) and UMTS, which is louder than the mobile signals. These signals would be practically destroyed by the noise and the contact transmission,  the phone call or the SMS communication will be interrupted immediately.

The second alternative involves the faking of a base station for the mobile phones in the cell areas with the help of a strong radio signal, which try to use the mobile phones to register automatically. If you interrupt now this registering process with help of technical devices, the mobiles phones will stay in a queue and no communication will be possible.

The last operation is related to the so-called IMSI-Catchers. The IMSI (International Mobile Subscriber Identity) represents an identifier, which allows the wiretapping and the localization of mobile phones within a radio cell. Minus of IMSI-Catchers and the related operations is, that the possibly interrupt the whole traffic within a radio cell, so that they can stop emergency calls of noninvolved individuals.

Therefore we offer with our jammer systems a solution for the penal system with help of noise generators. The room selective detection- and repression system localizes and interrupts within split seconds each communication trial via GSM or UMTS (Wi-Fi or Bluetooth are available on request , too).

A detected phone call or SMS cause an alarm immediately and activate the jammers within split seconds. The system sends instantly a message to the alarm server. Consequently an uncontrolled contact of the prisoners with the environment can be prevented.

Realizing the purpose obligatory involves the vandalproof version of all vulnerable parts of the device. The security of functions has to be guaranteed also for situations, if prisoners have any tool at hand and if they could wangle knowhow about the functioning of jammers.

Our systems have the following features:

	Sabotage alarm
	Excellent results of localizing with help of a close-meshed detection-network
	Identifying of mobile phones in the immediate vicinity
	Sensitivity of device is adjustable invidually
	Central alarm messages or local messages about potential-free contacts
	Detection and localization of all concurrent active mobile phones
	No alarm out of permitted areas
	As fast as possible reactions: no SMS and no phone calls immediately
	Parasitic frequencies are possible temporally, locally and frequency related
	Only short-time jamming necessary, afterwards further monitoring; therefore also detection and selective jamming of further mobile phones in the same area
	Activation in the alarm place only or in the related area (local jamming)
	adaptable transmission power
	identifies mobile phone conversations and SMS messages
	Shows alarms and saves them
	Tolerates allowed communication (like Paging, PSA, DECT, etc.) without setting off the alarm
	Guarantees a simple and comfortable service, together with wide security functions
	The power supply will be given by an interruption-free power source (USV) for security purposes (DIN VDE 0100-200)

Regulations:

Electromagnetical compatibility
Basic field standard interference emission

Electromagnetical compatibility
Basic field standard interference immunity

Security of equipment of the information technology

Please order our special catalogue for prisons.

support@phonejammer.at