MGI. Wideband Passive GSM Interception System with A5.1 decipher

Review

Multi-band fully passive GSM interception system - MGI

GSM Traffic Recording System  
Multi-band fully passive GSM interception system designed to record the entire traffic occurring between Base Transmitting Stations (BTS) and Mobile Stations (MS) located within the system’s operational range. This means literally tens or even hundreds of simultaneous calls.  

“Fully passive” means

MGI does not have any transmitting parts;
MGI does not interfere with GSM networks and mobile phones; 
MGI’ operation is completely undetectable. 

Recorded information can be processed either on-line or off-line.

MGI can intercept

Deciphering capabilities

A5/2 real-time decipher is a software based solution; it works as a background application. Average deciphering time is 5 msec. 
A5/1 decipher is a separate device connected directly or remotely to the MGI. For more information about A5/1 deciphering, please refer to the RTDM51 description
We recommend to use with MGI quick decipher (up to 24 keys per sec)

Add module of global geolocation of subscribers (optional)

Application

Advantages

Advantages of MGI 

Multi-band Real Time fully passive GSM interceptor with A5/2 & A5/1 Real time decipher

 48 base stations can be monitored at the same time

 Hopping of channels and handover 

 Deciphering time is less than 10 milliseconds per key, that allows to listen more than 300 conversations simultaneously

 No miss even one conversation thanks to an improved channel processing algorithm

 Separate antennas for the direct and reverse channels

 External low-noise high gain antenna amplifiers in the kit – up to 30db - get the best performance for reverse channel

 Own terminal for secure remote control

 Several systems can work and managed together 

 Only 15 kg compact portable form factor

Demo & Training

 We provide online demos only to existing clients with whom we have successful experience of cooperation.

 We do not provide free training. If you are not familiar with the subject, links to training courses are here.

 To apply for a demo or training you should provide a completed end user certificate

Download

File Title	Release Date	File Type	Size (mb)	Action
Multi-channel passive GSM interceptor (Leaflet)	10-23-2017	Documentation (pdf)	0.24 MB	download
Interceptors. General presentation	06-05-2025	Documentation (pdf)	3.85 MB	download
End User Certificate (EUC) to apply for purchase	03-03-2021	Documentation (pdf)	0.09 MB	download