Specifications

Audio Technologies
Bluetooth Accessories
BLT370: Bluetooth Audio/Mobile Phone Transceiver
> Can be interfaced with any source unit
with an auxiliary input.
> Bluetooth Audio Streaming (A2DP)
> Muting Circuit for Bluetooth Interface
Ready Source Units
> 2.5mm stereo mini-jack auxiliary input
for another audio device or microphone
> Visor mount included
RCB204: Replacement Microphone for Source
Units with Built-in Bluetooth Interface
> Unidirectional microphone (minimizes background
noise)
> Integrated visor mount
Replacement for: CZ500, CX609, CZ509, FZ709,
FB275BT, FB275BTB
RCB199: Optional External Microphone for Source
Units with Built-in Bluetooth Interface
> Unidirectional microphone (minimizes background
noise)
> Integrated visor mount
Compatible with: NX500, NZ500, NX700,
VX400, VZ400, CZ500, CZ509, VX709,
CX609, VZ709, MAX675BT, VRX785BT
Bluetooth Basics
Bluetooth wireless technology is a short-range
communications technology intended to replace the
cables connecting portable and/or fixed devices while
maintaining high levels of security.
The Bluetooth specification defines a uniform structure
for a wide range of devices to connect and communi-
cate with each other.
Bluetooth technology has achieved global acceptance
such that any Bluetooth enabled device, almost
everywhere in the world, can connect to other
Bluetooth enabled devices in proximity.
Bluetooth enabled electronics devices connect and
communicate wirelessly through short range, ad hoc
networks known as piconets. Each device can simulta-
neously communicate with up to seven other devices
within a single piconet. Each device can also belong
to several piconets simultaneously. Piconets are estab-
lished dynamically and automatically as Bluetooth
enabled devices enter and leave radio proximity.
A fundamental Bluetooth wireless technology strength is
the ability to simultaneously handle both data and voice
transmissions. This enables users to enjoy a variety of
innovative solutions such as a hands-free headset for
voice calls, printing and fax capabilities, and synchroniz-
ing PDA, laptop, and mobile phone applications to name
a few.
Bluetooth Profiles
Advanced Audio Distribution Profile (A2DP)
A2DP describes how stereo quality audio can be
streamed from a media source to a sink. A2DP defines
the protocols and procedures that realize distribution of
audio content of high quality in mono or stereo on ACL
channels. The term “advanced audio,” therefore, should
be distinguished from “Bluetooth audio,” which indicates
distribution of narrow band voice on SCO channels as
defined in the baseband specifications.
Hands-Free Profile (HFP)
HFP describes how a gateway device can be used to
place and receive calls for a hands-free device. A typical
configuration is an automobile using a mobile phone for a
gateway device. In the car, the stereo is used for the
phone audio and a microphone is installed in the car for
sending outgoing audio. HFP is also used for a personal
computer to act as a speakerphone for a mobile phone in
a home or office environment.
Headset Profile (HSP)
The HSP describes how a Bluetooth enabled headset
should communicate with a computer or other Bluetooth
enabled device such as a mobile phone. When
connected and configured, the headset can act as the
remote device’s audio input and output interface.
Object Exchange (OBEX)
OBEX us a transfer protocol that defines data objects
and a communication protocol two devices can use to
exchange those objects. OBEX is designed to enable
devices supporting infrared communication to exchange
a wire variety of data and commands in a resource
sensitive standardized fashion. The OBEX protocol also
defines a folder-listing object, which is used to browse
the contents of folders on a remote device. OBEX
enables applications to work over the Bluetooth technol-
ogy protocol stack as well as the IrDA stack. For Blue-
tooth enabled devices, only connection-oriented OBEX is
supported. Three application profiles have been devel-
oped using OBEX that include SYNC, FTP, and OPP.
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