Zoom X4 manual PROBLEM Why do I hear static or noise when I’m using my telephone?

PROBLEM: Why do I hear static or noise when I’m using my telephone?

SOLUTION: If that phone does not have its own filter, you may hear static or high-pitched noise if you make a phone call while your ADSL modem is on. A filter also prevents a phone from interfering with, or dropping, your DSL connection.

PROBLEM: I accidentally unplugged the USB cable while using my modem. This resulted in a general protection fault (GPF) error message. What should I do?

SOLUTION: You must plug the modem back in and restart your computer to rectify this problem.

54 X4 ADSL Modem User’s Manual