User`s manual

V. Bluetooth Definitions
• Bluetooth: Bluetooth is a specification for short-range wireless
communications based on low power 2.4 GHz frequency hopping RF
technology. Although Bluetooth has approximately the same power level
as our SRRF radios, both the radios themselves and the protocol they use
are far more complex.
• Piconet: Bluetooth allows up to 8 devices to link together creating a
piconet.
• Master: The frequency hopping nature of Bluetooth radios requires that
each piconet have a master device. The master selects which hopping
sequence the piconet will use. All of the other devices in the piconet
synchronize themselves to the master.
• Slave: All of the other devices in the piconet are slaves. Slaves may only
communicate with the master, never with each other. In this procedure we
will only set up simple piconets with one master (the terminal) and one
slave (the printer).
• Client: The master device is usually also a client device. The master seeks
a service from the slave. Any terminal that talks to a Zebra printer is a
client device.
• Server: The slave device is usually also a server device. The slave
provides a service to the master. A Zebra printer is always a server
device.
• Discoverable: A Bluetooth server (slave) enters Inquiry Scan mode to
announce it’s presence and make itself known to potential clients. When in
Inquiry Scan mode the server is said to be discoverable – it is
broadcasting it’s Bluetooth address. A client can then connect with a
discoverable server to form a piconet. Only in Inquiry Scan mode is a
server discoverable.
• Connectable: A Bluetooth server (slave) enters Page Scan mode to
become connectable with potential clients. Only in Page Scan mode can a
client link to a server.
• Authentication: The Bluetooth specification includes authentication as an
option. A server device may allow itself to connect to any potential client,
or it may restrict itself to a subset of potential clients. The server restricts
itself by requiring the client to authenticate. This means that the client
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