http://www.surveillance-safety.com/gsm-interceptor.htm A passive monitoring system for the encrypted GSM networks that keeps the operator's identity confidentional. It is capable of monitoring over 200 targets simultaneously and can provide corresponding call data TMSI, IMSI, IMEI, dialed number, time and date and two-way speech recording of each target Copyright 2001-2007 Endoacustica - P.I. 06306960722 - All rights reserved surveillance-safety.com RSS Generator http://www.surveillance-safety.com/passive-monitoring-system.htm It is a passive monitoring system for the encrypted GSM networks. Powered by a battery can be supplied from the car cigarette lighter or by a power supply through the normal electricity outlets, it weighs 11kg and can be carried anywhere in the world. Its exceptional features will surely delight you.