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FAQ - Bluetooth

General frequently asked questions about bluetooth products.

1. I would like more information about Bluetooth wireless technology?

if you need a more technical explanation on the technology or its development, please visit www.bluetooth.org.

2. Is Bluetooth practical for use with mobile devices? 

Yes. One concern for mobile computing users is power consumption. Bluetooth radios are very low power, drawing as little as 0.3mA in standby mode and 30mA during sustained data transmissions. Bluetooth radios alternate among power-saving modes in which device activity is lowered to maximize the mobile power supply.

That is why we have Bluetooth Headset.

3. What is Bluetooth? 

Bluetooth is the name for a short-range radio frequency (RF) technology that operates at 2.4 GHz and is capable of transmitting voice and data. The effective range of Bluetooth devices is 30 feet (10 meters). Bluetooth transfers data at the rate of 1 Mbps, which is from three to eight times the average speed of parallel and serial ports, respectively.

4. What is the difference between Bluetooth wireless technologies and other technologies, such as UWB, 802.11g, 802.11a, 802.11b, WLAN, Wi-Fi, AirPort, Infrared, and Zigbee? 

While there are many differences, key among them are range, power consumption and intended use. Bluetooth wireless technology in its most common implementations has a range of 30 feet (10m), is low-power consuming, designed for battery operated mobile devices and provides voice, data and audio connections between devices.

5. Why is the technology called Bluetooth? 

The heart of the Bluetooth brand identity is the name, which refers to the Danish king Harald "Bluetooth" Blaatand who unified Denmark and Norway. In the beginning of the Bluetooth wireless technology era, Bluetooth was aimed at unifying the telecom and computing industries.

6. Why Use a Bluetooth headset? 

Bluetooth headsets are considerably more expensive than regular corded headsets (or no headset at all!). They are also somewhat more complicated to set up, and you then have the added complication of having to keep their battery charged.

Firstly, whether Bluetooth or not, you should try and always use some type of headset with your cell phone. This will vastly reduce the amount of radiation that you're pumping out of the phone and into your brain - some scientists believe this radiation could be harmful, although studies to date have been inconclusive.

In some states and countries, you are not allowed to hold a cell phone while driving, and the use of some type of headset is mandatory. Even if it is still legal to hold a cell phone and drive, it is safer to avoid this whenever possible.

A simple wired headset is a satisfactory solution for many people, but it literally ties you to your cell phone. With a Bluetooth headset you can have your cell phone in your briefcase on your car's back seat, and still place and receive calls.

7. Will Bluetooth and Wireless LAN (WLAN) interfere with each other?

No, both Bluetooth and WLAN (Wireless Lan) can co-exist. Since Bluetooth devices use Frequency Hopping and most WLANs use Direct Sequence Spreading techniques they each appear as background noise to the other and should not cause any perceivable performance issues.

8. Will other RF (Radio Frequency) devices interfere with Bluetooth Devices?

No. Bluetooth radios operate on the unlicensed 2.4 GHz (Industrial, Scientific and Medical) frequency band that is shared among other devices (microwave ovens, cordless phones, garage door openers, etc. ). Bluetooth radios switch frequencies at such a rapid pace (1,600 times per second) and the data packets are so small that interference from other RF sources is highly unlikely. Bluetooth is a robust communication system.

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