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This section lists potential issues, problems, and common difficulties and possible solutions to guide you
towards resolving those issues.
If your speakerphone doesn’t work, your system administrator may have disabled it. If this is the case, a
message is displayed informing you that Handsfree is disabled after you press the speakerphone key. In this
case, use the handset or a headset to handle calls.
If you attach a USB device to your VVX 401/411, 500/501, 600/601 or 1500 phone, and the phone does not
detect the attached USB device, your system administrator may have disabled the USB port on your phone. In
this case, you cannot attach a USB flash drive to your phone to use the following features:
●
USB headset
●
USB charging device on the VVX 600/601
Contact your system administrator for help on enabling the USB port on your phone.
In some cases when you are using your headset, your contacts may experience audio or echo issues, such as
feedback of your voice or of their own voice, during the call. If your contacts hear an echo during a call when
using your headset, you need to enable echo cancellation on your phone.
To enable echo cancellation on your phone:
1
Navigate to Settings > Basic > Preferences > Headset > Echo Cancellation.
●
Select Enabled.
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