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2. INTERFACES
2.4.1.1 Serial Port Profile
The Serial Port Profile provides RS232 serial cable emulation for Bluetooth wireless technology devices.
In this way, legacy applications do not have to be modified to use Bluetooth technology; they can simply treat
Bluetooth wireless link as a serial cable link.
The Serial Port Profile uses RFCOMM to provide serial port emulation. The device which sets up the
RFCOMM connection is called the initiator, while the other is referred to responder.
A few passages are requested to set the virtual serial port and to establish a connection, so it is necessary.
that on the side host a software management of the Bluetooth wireless technology devices must manage to
execute every of these passages (the search of removedevices, the optional request of the password,
chanal setting RFCOMM, ecc.).
2.4.1.2 Object Push Profile
L'object push profile, uses the Generic Object Exchange Profile (GOEP) services that defines 2 rules: the first
is a server devices that the object can be send or receive (the printer is a server devices) and a client devices
that can send or receives data objects from the server (for example: a Pc, a cell Phone, or a Palm).
The Object Push Profile provides facilities for exchanging business cards between client and server, for
pulling business cards from a server, and for pushing a limited range of object onto a server.
The object that printer identify are:
Printer Application
Object Push
Profile (OPP)
OBEX
SDP
L2CAP
Host Controller Interface
Link Manager
Link Controller
Radio
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(Fig.2.10)
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