A CD deck with Bluetooth functionality is able to interface with other devices to provide an assortment of wireless functions, including hands-free calling and remote control features. Bluetooth is more commonly found on other types of electronics devices, including mobile phones and personal computers, each of which can interact with a CD deck that contains Bluetooth functionality.
Phone Calling
CD decks that feature Bluetooth technology, such as the Clarion CZ501, interact with phones that contain the same Bluetooth profiles, or modes, as the CD deck. For instance, the CZ501 comes with the Bluetooth Hands-Free Profile, which allows you to place and receive phone calls through your mobile phone. While using the CD deck for this purpose, you listen to your calls through the unit and your car's speaker system. The deck also features the Bluetooth Headset Profile, which offers the same function as the HFP, but through a wireless headset instead.
Playback
A CD deck that features the Bluetooth Advanced Audio Distribution Profile (A2DP) and the Audio/Video Remote Control Profile, such as the Kenwood Excelon KDC-X995, allows peripheral devices to operate the unit. The A2DP profile gives you the ability to stream audio files contained on a computer or mobile phone through the CD deck and its speaker system. The AVRCP allows you to control the CD deck's playback with a variety of standard playback controls, including play, skip and pause.
Bluetooth Technology
Any device that interacts with a CD deck with Bluetooth needs to have the same profiles installed to properly interface with the unit. Bluetooth technology transmits data between devices on the 2.4 GHz radio frequency for up to 164 feet. Although it uses the same radio frequency as Wi-Fi technology, Bluetooth technology is designed to coexist with Wi-Fi transmissions, not interfere with them. Devices that contain Bluetooth do so with a small microchip that is built into the device and can't be added after the device is purchased.
Miscellaneous Info
Bluetooth devices, such as a CD deck, that link to other devices form what's known as a personal area network. Bluetooth technology was invented by Ericsson in 1994 and, at the time of publication, is a collaborative effort among an assortment of electronics companies that form the Bluetooth Special Interest Group. All Bluetooth technology is produced to the same standards, making it compatible with all devices that contain the same profile. Bluetooth technology traces its roots back to radio technology developed during the 1940s and is named after the 10th century Danish monarch, King Harald Blatand, whose last name translates to Bluetooth in English.
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