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14221-1850-2000, Rev. C
3.1.1
Vehicle Communications Hub (VCH)
The XL Vehicle Communications Hub (VCH) is the main LMR radio unit in a vehicular (mobile)
radio system. A major feature of the VCH design is the use of IP networks for tethering multiple
radio control heads. With respect to the audio systems, this feature allows the VCH to support
approximately eight IP devices as audio sources and destinations.
3.1.2
XL Control Head
The XL Mobile supports the addition of an XL Control Head to the VCH in a front-mount or remote-
mount configuration. In the front-mount configuration, the VCH and control head are physically
mounted together, while in the remote-mount configuration, the control head is in a separate
location. XL Mobiles with XLP R10A or later support up to six (6) control heads connected
simultaneously.
The XL Control Head is a networked device that uses a wired Ethernet connection to provide
remote control of the VCH. It includes a color LCD graphical user interface and physical knobs
and buttons to allow a user to control the radio or view its status. The control head also provides
multiple audio interfaces to capture and play real-time audio.
The XL Control Head's mission-critical design provides a tactile interface optimized so that users
can keep their eyes on the road and still operate the radio. Controls and display are laid out to
give instant access to primary use cases.
Standard Control Head Features include:
Wi-Fi
(802.11B, G, N)
•
®
Bluetooth
•
®
Built-in Speaker
•
•
Hi-visibility Color Display
22
Figure 3-1: Vehicle Communications Hub (VCH)
Figure 3-2: XL Control Head
4.0
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