There are many usage scenarios for Bluetooth wireless technology,
and the technology has been put to wide use. Let us look at a couple of
the usage models.
The three-in-one phone usage model allows a mobile telephone to
be used as a cellular phone in the normal manner, as a cordless phone
that connects to a voice access point (e.g., cordless base station), and as
an intercom or ??????walkie-talkie??™??™ for direct communication with another
device. The cordless telephony and the intercom features use Bluetooth
wireless technology.
What Is Bluetooth Wireless Technology? 5
The second use case is wireless telematics. Assume that a user who is
talking on a cell phone approaches his or her automobile but wants to
continue the phone conversation in the hands-free mode. Using Bluetooth
communication the user can continue the phone conversation
using the microphone and speakers equipped in the dashboard of the
automobile.
Another use case is the instant postcard, whereby a user with a
digital camera transmits a photo via a data access point, which could
Personal ad hoc networks
Data/voice
access points
Landline
Cable
replacement
Figure 1.2 Bluetooth use cases.
6 Chapter One: Introduction
be amobile phone. Similar use cases include automatic synchronization,
business card exchange, hotel and airline check-in, electronic ticketing,
and wireless games.
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