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O-24
UMAN-EN2+
A Typical Bluetooth Connection Sequence
In this simplified sequence “Joe’s Terminal” is a Bluetooth
ready hand held terminal running an application that needs
access to a printer.
1. Joe’s Terminal performs a search of its “piconet” (a
Device Inquiry) and determines that there are four Bluetooth
devices in the vicinity.
2. Joe’s Terminal queries each of the four devices to
determine which services they provide (a Service Discov-
ery). The Bluetooth enabled Encore “Sandy’s Printer”
offers the printing service.
3. Joe’s Terminal sends a print connection request to
Sandy’s Printer.
4. Sandy’s Printer evaluates the request and determines
that Joe’s Terminal is permitted to use the print service,
but
only if the correct password is submitted
.
5. Sandy’s Printer queries Joe’s Terminal for the password
(Authentication).
6. Joe’s Terminal returns the correct password and the
print connection is established.
7. After Joe’s Terminal is finished printing it disconnects
with Sandy’s Printer. (Some Bluetooth services disconnect
automatically, others must be closed manually.)
There are several layers of security in the Bluetooth
system, so this sequence may not be a completely accurate
representation of how your printer may function in a
Bluetooth environment. For the most part, communications
using the Bluetooth protocol are initiated and processed
without any operator intervention, much like the IrDA system
described previously.