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Bluetooth:
what is bluetooth
Overview:
Bluetooth
is the name given to a wireless standard that was developed by Ericsson. The
name Bluetooth was taken after a mythical Viking God and it seems that the
developers at Ericsson, which is a Swedish company, thought it would be a
good name when they were developing the standard.
Bluetooth
communications operate wirelessly on the 2.4 Gigahertz frequency band. This
band was established as a "free use" frequency spectrum by the various
world governing bodies that allocate "free use"and "pay for
use" frequency spectrum. This means that a company that develops and
produces devices that operate in this band does not have to purchase a license
to use this frequency spectrum. Many devices that operate in the 2.4 Ghz band
have been available in the market, including home wireless telephones, laptops
and computers that have wireless capability and "centrino" chips
built in.
Bluetooth
is simply a standardized way of using this frequency. It allows a manufacturer
of one type of device, a cell phone for example, to communicate wirelessly
with another type of device made by another manufacturer like a headset, laptop
computer or car stereo. In other words if one has a bluetooth capable phone
from Motorola and they purchase a car from BMW that has a bluetooth capable
car stereo, then the phone and stereo will link wirelessly and conversations
can occur hands free through the car stereo when the user is in the vehicle.
The same holds true if you have a bluetooth computer through which one can
establish a cellular band data connection with their cell phone etc. There are
many present and future applications for which bluetooth is beneficial.
Bluetooth
as it relates to cellular communications and hands free functions:
Bluetooth
capable cell phones and data devices like Treo and Blackberry devices can use
bluetooth capability to communicate hands free either by using a bluetooth headset
or bluetooth hands free car kit. The bluetooth headset will allow the user to
hold a cell phone conversation without having to touch the phone or connect
the headset to the phone using a wire.
Hands
free communications are virtually automatic in vehicles that have bluetooth
stereo systems. A person can simply link his or her phone to the stereo and
cellular voice communications will take place through the car stereo speakers
and built in microphone in the vehicle. One does not need to purchase a hands
free kit and have it installed into the vehicle to have hands free capability.
For vehicles that do not have bluetooth capable stereo systems, a bluetooth
hands free kit can be used in place of a traditional hard-wired hands free kit
in a vehicle. Bluetooth in car hands free kits come in two forms; simple "plug
and play" kits that incorporate the bluetooth circuitry, speaker and microphone
in a single body that is usually plugged into the cigarette lighter and "install
type" hands free kits that have separate junction circuit box, speaker
and microphone. The difference between these two types of kit is that the "install
type" hands free car kit usually has better voice and microphone quality
than the "plug and play type".
Bluetooth
as it relates to cellular data communications:
Bluetooth
capable cell phones and data devices like Treo and Blackberry devices can use
bluetooth capability to communicate with laptop and other computers and use
them to transfer data, like phone books and contact lists, wirelessly back and
forth from the phone to the computer or use the phone to establish a data link
with the cellular network and use the computer for functions like email or web-browsing.
In other words, no data cable between the phone and computer is required
and no software to enable the phone and the computer to communicate is required.
Bluetooth enables a fast and simple connection between any bluetooth enabled
cellular phone or device and any bluetooth enabled computer.
Advantages
and disadvantages of bluetooth with cellular phones and devices:
Bluetooth
and Data:
Advantages:
Using bluetooth link between a cell phone and computer for data connections
on a cellular network is far more convenient than traditional cable methods
and there is no disadvantage. It is the ideal way to link computers and cell phones or PDA devices.
The
same is cannot be said for hands free communications using bluetooth car kits
and headsets.
Disadvantages:
None
Bluetooth
and Hands free:
Advantages:
Bluetooth enabled car stereos and vehicles have the obvious advantage that no
kit must be purchased or installed for the user to have hands free capability.
Bluetooth
hands free kits that are purchased and installed into a vehicle will work with
all bluetooth enabled phones and when one changes phones or uses two different
model bluetooth phones a new hands free kit does not have to be purchased and
installed.
Disadvantages:
Bluetooth
enabled vehicles and bluetooth hands free kits do not come with a cell phone
holder for a specific cell phone or PDA and this poses several disadvantages:
a-the
user does not have a convenient place to dock the phone and view the phone display.
b-the
phone battery will not charge unless the phone is plugged into a cigarette lighter
power supply
c-the
phone battery will be used faster because the phone uses battery power to establish
a bluetooth link, stay linked and uses extra energy during a call because it
must use power for the bluetooth connection with the car kit and the cellular
call.
d-the
cell phone is not connected to an external antenna or booster and signal is
not as good when compared to a traditional kit with holder.
e-if
a user leaves the bluetooth link between the phone and car kit connected and
is close to the vehicle but is not in the vehicle and a call comes in, the phone
will only ring in the car kit and even if the ring is heard and the call is
engaged by the user, the conversation will not be heard through the phone, it will
be audible in the car only. For example, a person comes home, puts their car
in the garage, takes the phone out and sets it on the kitchen counter and a
call comes in, the user cannot use their phone unless they go back out the vehicle
very quickly. If the phone is far away from the vehicle then the bluetooth link
is inactive, however some phones and kits can stay linked over relatively large
distances as far as 30 to 100 feet. The distance that a bluetooth link will
cover varies between cell phones, brands of bluetooth car kits and location
of the bluetooth phone and car kit. The only way to be sure that a phone bluetooth
link is not active (when in close proximity) is to de-link the phone from the
bluetooth kit. Linking and de-linking a phone from a kit is an obvious disadvantage
over a traditional kit.
f-Bluetooth
hands free kits are more expensive than traditional hands free car kits.
How
to overcome bluetooth deficiencies with Smoothtalker bluetooth hands free kits:
Bluetooth
hands free kits have several disadvantages when compared to traditional install
kits and Smoothtalker brand bluetooth address the issues and solve the problems.
a-smoothtalker
bluetooth hands free kit junction boxes have been optimized and designed to
match the phone or PDA for which they are sold. That is to say that a Smooth
Talker bluetooth hands free kit is made for the Motorola V3 Razr will perform
with outstanding speaker voice quality at high volume and the hands free microphone
will have noise reduction to match the phone and reduce road noise and there
will not be any echo to the user or caller, a common problem that plagues many
other bluetooth hands free kits. A smoothtalker bluetooth hands free kit will
work with any bluetooth cell phone or PDA like all bluetooth hands free kits but
it is guaranteed to perform correctly only with the phone or PDA for which it
is designed.
b-SmoothTalker
bluetooth hands free kits are offered with various matched cell phone and PDA
holders that offer docking, charging, and external cell antenna connection.
c-SmoothTalker
hands free kits offer privacy handsets. This is a feature that is unique to
Smoothtalker bluetooth hands free in car kits.
d-SmoothTalker
bluetooth hands free kits are not advertised or sold as "one kit fits all"
devices. All of our bluetooth car kits are specific to the cell phone or PDA
for which they are purchased and guaranteed to work properly for that device.
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