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24 QL 320 User’s Guide
quiry) and determines that there are four Bluetooth devices in the
vicinity.
2. Joe’s Terminal queries each of the four nearby devices to de-
termine which services they provide (a Service Discovery). The
Bluetooth enabled QL 320 “Sandy’s Printer” offers the printing ser-
vice.
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 (Au-
thentication).
6. Joe’s Terminal returns the correct password and the print con-
nection is established.
7. After Joe’s Terminal is finished printing it disconnects with
Sandy’s Printer. (Some Bluetooth services disconnect automati-
cally, 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 initi-
ated and processed without any operator intervention, much like
the IrDA system described previously.