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Digital Telephone Desktop 9850
22
Connection to the PC is not possible.
USB driver has not been installed properly
Solution: Check whether the USB drivers have been installed correctly. If you did not
complete the installation of the USB driver or canceled the 'Unknown device detected'
process the first time you connected the Desktop 9850 to your PC. Proceed as follows:
Connect the Desktop 9850 to your PC.
Go to the Start menu, Settings, Control Panel, System, Device Manager.
Look for an unknown USB device in the list.
Select the Unknown Device and click Remove.
Click OK and close the Control Panel window.
Disconnect the Desktop 9850 and reconnect it again.
The Add New Hardware Wizard is started. Click Next.
Follow the instructions which appear on the screen. When the wizard detects the driver (USB
Mass Storage Device), click Next to copy the driver to your PC.
On the last wizard page, click Finish to complete the installation.
Windows XP
When installing the Desktop 9850, the operating system automatically assigns a drive for
the Desktop 9850. This drive appears as a 'removable disk' in the Windows Explorer.
Sometimes, the drive letter assignment for the Desktop 9850 conflicts with an existing
drive letter mapping; this is why the Desktop 9850 cannot be seen in the Windows
Explorer. Additionally, the software program displays the Desktop 9850 status as
(disconnected).
Solution: Mount all network drives starting with drive letters Z, Y, X (in reverse alphabetical
order).
PC sound system is not functioning
The Desktop 9850 is used as a USB sound device: Open the Sounds and Multimedia
Properties dialog box in the Control Panel. Make sure your PC’s sound system is in the
Preferred device selection. Activate the Use only preferred devices option.