USB Telephone Adapter User Guide

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I cannot hear a VoIP dial tone on the handset.

Possible Solution:

Verify your cables are connected correctly between your computer, the telephone adapter, your telephone and the wall jack, and that the cables are not inverted.

Possible Solution:

If you unplug the telephone adapter from your computer without disabling the device and plug the telephone adapter in again, you may lose the VoIP dial tone. With the USB Telephone adapter connected, restart your computer.