January 07, 2009

Choosing the Right Cell Phone

Whether you want to continue your current service plan, want to change providers or start with a new service, you can find a cell phone according to your needs in Gabel Corp. You will need to: 
  1. Select a cell phone provider 
  2. Evaluate the functions of a cell phone 
  3. Find mobile phones 
  4. Buy mobile phones with confidence

1. Selecting a cell phone provider 

Service providers sometimes work with specific manufacturers to produce mobile phones that are compatible with their networks and the services they offer. In Gabel Corp you can find mobile phones for all major service providers. You can elect to be connected with a new service plan or with a pre-payment system if you don't want any plan. 

Compatibility

If you already have a service contract and are looking for a new cell phone to stay within your plan, then you can simply look at cell phones by band compatibility. To make sure your new cell phone will be compatible with your service plan, you can always select a quad-band cell phone that covers every common GSM band. 

Among the GSM band options are 850MHz, 1800MHz and others. Ask your provider if you have any questions about the bands used. 


2. Evaluate the characteristics of the cell phone 

In Gabel Corp you can find mobile phones in almost any price range. If your needs are basic, you may not need all the paraphernalia associated with some of the more expensive models. If cost is not a problem, find the latest and best technology in the world just a click away. 

The options to consider when buying a cell phone tend to confuse and new features appear every day. To reduce your search, consider the following key questions: 

Do you plan to use your phone inside or outside your local area? 

If you plan on using your phone outside your country you may want to choose a mobile phone with GSM, or global system, the network standard used worldwide. If you do not plan on leaving your local area with your cell phone, CMDA or TDMA networks can reach your needs.

Want to access the Internet or email from your cell phone? 

Many cell phones and service providers offer email service and Internet access. If you want this feature, make sure that the phone you're interested in is ready to surf the Web and/or use email. 

Reduce your search by selecting additional features now available in the new models: 
  • Built-in camera 
  • Color display 
  • PDA 
  • Email/Web 
  • GSM
  • Speaker
  • Walkie-talkie 
  • Bluetooth 
  • Voice Call 
  • MP3 Player 
  • Games 

How important is the weight and size of your phone? 

Nowadays phones come in many shapes, sizes and weights: flip or clamshell cell phones, PDA and "candybar". Think in the shape when you decide what you want. While all are very portable phones usually clamshell phones have the advantage in portability and larger screens. In addition, the keys are protected against accidental markings. Sometimes, the simplicity and durability of the candybar form can be an advantage. If a slightly larger form don't bother you, you can gain much functionality in addition to a larger screen by choosing a PDA phone.

3. Find mobile phones

In Gabel Corp you can find a wide selection of GSM mobile phones with an excellent quality at great prices. You can take a look at: Gabel Corp's Mobile Phones.

4. Buy mobile phones with confidence

Once you're clear about the features you want and the price you're a willing to pay, you can be assured that you will make a smart purchase and you will be very satisfied with your new cell phone. If you shop with us, you can also have peace of mind because we will do our best to make your shopping experience as safe and easy as possible.

January 05, 2009

Wireless Communications - Bluetooth

Wireless communications are present in many of our daily activities and their use has become so common that we lose the perception of how useful and sometimes essential they might be. Cellular networks transmitting voice and data have emerged to provide the mobility and availability of communication that the accelerated pace of life in the big city demands. The use of radio frequency and infrared sensors provide the convenience of remote control to operate electronic devices making easier to perform our daily tasks.

Bluetooth is part of the technologies developed to provide wireless communication for use in personal areas. However, its use goes beyond the elimination of wires, as it is flexible enough to allow the creation of applications that open a world limited only by the imagination. 

Bluetooth is a technology developed by Ericsson in 1994, which makes possible wireless connectivity between devices within a short distance, they may form networks with different communications equipment: mobile computers, pagers, cell phones, PDAs, and even home appliances.


Features 
  • Wireless. Replaces wired connections at distances not exceeding 10 meters, reaching speeds of 1Mbps.
  • Automatic communication. The structure of the protocols that conforms it favors the communication automatically without requiring to be started by the user.
  • Low power consumption.
  • Integration of services. Can support voice and data transmissions simultaneously.
  • Omnidirectional transmission. Because it's based on radio communications, does not require line of sight and allows multipoint configurations.
  • Security. Uses Spread Spectrum Frequency Hopping as multiplexing technique, which reduces the risk that communications are intercepted or have interference with other applications. Also provides specifications for authenticating devices attempting to connect to the Bluetooth network, as well as in the handling of encryption keys to protect the information.
  • Establishment of networks. Has the characteristic of forming a network topology where a device acts as master and up to seven more operate as slaves.

Bluetooth vs. Infrared 
  • Both protocols specify a short-distance wireless communication, some people assume that Bluetooth could replace the infrared applications for the clear advantages it provides, which are deducted from their own characteristics.
  • Due to the similarity of applications, it is important to identify the advantages between the two technology.
  • The infrared requires linear communication between transmitter and receiver, which makes the line of sight imperative for its effective transmission.
  • The frequencies of the infrared band does not allow penetration through walls, giving an important advantage to the radio frequency that the Bluetooth technology operates.
  • The infrared communication is always one to one, leaving the out multipoint configurations.
  • Bluetooth allows the generation of networks.