GSM Tracking

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WELCOME
TO
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ComsTrac Limited  has specialized in the supply
of professional surveillance and protection
equipment for Cellular Interception, Cellular
Tracking and Cellular Monitoring for Law
Enforcement Agencies for the last 10 years
especially GSM Interception, GSM Monitoring, GSM
Interceptor and interception monitoring systems
both active and passive versions.
We have considerable experience in the supply of
all forms of Cellular and Satellite communication
intercept and interception monitoring systems,
for Cellular Interception, GSM Interception
Systems, Passive GSM Interceptors and
interception monitoring, Hybrid Active GSM
Interceptors and interception monitoring, CDMA,
Satellite, Computer and Standard Telephone
Communications. We have specialized in the supply
of VIP and Convoy protective Jammers, armoured
vehicles and protective ballistic clothing to
high level clients on 4 continents.
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GSM TRACKING
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What is GSM?
Global System for Mobile (GSM) is a second
generation cellular standard developed to cater
voice services and data delivery using digital
modulation.
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GSM Intercept
We are delighted to announce the imminent release
of CTS MLS (Mobile Location System). Accurate
tracking, geo fencing, data base collection of
target handsets tactically and strategically.
Anywhere in the world at any time. Accuracy down
to sector level with final sub 10m accuracy in
city centers.
Both fully passive and hybrid active systems for
the intercept of GSM cellular communications. For
any frequency across 850/900/1800/1900Mhz and
from 4 channels up to vehicle installed 8700
channel systems. 2G GSM, UMTS and CDMA Protocols
are all covered by the range of CTS systems.
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Characteristics of GSM
Fully digital system using 9000 1SOO MHz
frequency band. User terminal authentication for
fraud control. Encryption of speech and data
transmission over the radio path. Full
international roaming capability. Low speed data
services. Compatibility with ISDN. Support of
Short Message Service (SMS).
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Features Provided by GSM
Calling Line ID - Incoming telephone
number displayed Alternative Line Service
-one for personal calls -one for
business calls Closed User group
-call by dialing last for numbers. Advice for
Charge -tally of actual costs of
phone calls. Fax Data -virtual
office/professional office Roaming
-services and features can follow customers from
market to market.
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Advantages of GSM Technology
Crisper, cleaner quieter calls. Security against
fraud and eavesdropping. International Roaming
capability in over 100 countries. Efficient use
of spectrum. A wide variety of handsets and
accessories.
Ease of use with over the air activation, and
all account information is held in a smart card
which can be moved from handset to
handset. Advanced features such as Short
Messaging and caller ID.
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Disadvantages of GSM
Incase of GSM, SIM cards, individual
authentication keys of the users are stored in
the authentication centers. Any person with the
rights and qualifications to access to
authentication center can manipulate these to
impersonate that mobile user.
Security algorithms used in GSM e.g. A3, A5, and
A8 are all undisclosed algorithms. But
researchers have proved that these algorithms
cannot guarantee 100 security. Privacy of a
call and mystery of a subscriber are only assured
on the air interface among the mobile station and
the base station subsystem leading to likelihood
of eavesdropping of voice data.
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CONTACT US
Communication Tracking SystemsComsTrac Limited5
Lyttelton RoadLondonN2 0DWTel
44-208-2018898Fax [phone]Email
sales_at_comstrac.com
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THANKS