BB Designing

The term GSM means – Global System for Mobile Communications. It is the most popular standard for mobile phones in the world. GSM differs significantly from its predecessors in that both signaling and speech channels are Digital call quality, which means that it is considered a second generation (2G) mobile phone system. GSM is an open standard which is currently developed by the 3rd Generation Partnership Project (3GPP).

From the point of view of the consumer, the key advantage of GSM systems has been higher digital voice quality and low cost alternatives to making calls such as text messaging. The advantage for network operators has been the ability to deploy equipment from different vendors because the open standard allows easy inter-operability. Like other cellular standards GSM allows network operators to offer roaming services which mean subscribers can use their phones all over the world.

To help you further understand, GSM is simply a standard used by phones to communicate with each other. It is a new standard that has been adopted to all new models of phones and is now so prevailant that it has become the ‘norm’ in the phone world.  Read more...

Whilst the growth and advances in the mobile telephone infrastructure has brought untold benefits, it has also brought an increased threat of eavesdropping on private and confidential conversations through the use of Global Systems for Mobile Communications (GSM) based listening devices.

These GSM devices work by using mobile telephone technology and networks to tap into and relay live audio from one location to another. Given the global nature of mobile networks, these devices are able to capture conversations taking place in London and relay them to an eavesdropper based as far away as Sydney.

Being small, simple to deploy, requiring very little power and accessible from anywhere in the world, GSM bugs now pose one of the biggest threats to privacy and security.

The Threat from GSM Bugs

Improved mobile technology and microphones mean GSM devices can easily pick up room audio within a 5 metre radius. This makes them an ideal method for capturing boardroom conversations.

New generation GSM bugs have gone a step further and use motion and vibration detection to sense when a room being monitored becomes occupied. Upon sensing occupation a message is sent to the eavesdropper as a signal to start recording the signals now being transmitted by the GSM listening device.  Read more...

Buying a new cell phone can be a really difficult task because there so many options but there is more to it than just choosing a good one. You will obviously choose a cell phone which you really like, but there are different factors that you should consider before you decide to buy a cell phone. You first have to pick a service provider and a carrier also. Each carrier in the United States offers a different selection of technologies and services, so it’s important to think about your needs when making a choice.

That’s why you should wisely select a carrier before buying a cell phone. Wireless carriers operate over two different networks: Code Division Multiple Access (CDMA) and Global System for Mobile Communication (GSM). GSM is the most popular standard for mobile telephone systems in the world. GSM services are a collection of applications and features available to cell phone subscribers all over the world. The best U.S. carrier is T-Mobile which is recognized worldwide for its GSM service.  Read more...

Finding a cellular phone and carrier that fits your needs is never easy. There are some basic things you have to know about your phone and cellular carrier like coverage areas, data availability, data transfer speed, roaming etc.. One of the most important things you should look for in a cellular carrier before you chose one is what network technology they use.

Most cellular carriers In the U.S. (T-Mobile, Sprint, Verizon, AT&T and others) use either CDMA, or GSM and sometimes both. What do GSM and CDMA mean, and which one is better for your needs? let’s first understand the meaning and the differences between the two.

CDMA stands for Code Division Multiple Access. Using codes, in CDMA the data and voice are separated from signals – leaving more space for data transfers. That is why CDMA is favored by 3G users – as they send and receive multimedia messages or using wireless broadband to access the internet. CDMA technology uses wide frequency-range to transmit voice and data.  Read more...