The little gizmo that has enabled self-installable ADSL service. Sometimes also called a Micro Filter or Distributed Filter, we prefer ADSL Filter. The filter actually blocks the ADSL signal on your telephone line from reaching your telephone handset. This ensures that no audible interference reaches your telephony device. Without a filter you may hear varying degrees of hiss/noise on the line. You should fit an ADSL filter in between the wall socket and EVERY telephony device that shares the telephone line. This will include: All telephone handsets, dial-up modems, fax machines, burglar alarms, AND don't forget your Satellite Receiver/Set-top box.
A micro-filter is a small device used in ADSL connections, which is connected to your phone socket. It's purpose is to separate voice communications from data communications on your phone line, so your telephone and ADSL modem get the correct signals - and you can talk and use the Internet at the same time. If you do not have a telephone, or any device that uses the phone line, a micro-filter is not needed.
A device which allows you to use an ordinary phone over a telephone line set up for an ADSL internet connection. Sometimes just called a filter.
Also known simply as a filter. These are little gadgets that you need if you are using a broadband/ADSL modem on a phone line that is shared with ordinary telephones. It makes sure that the digital ADSL signals do not interfere with ordinary voice signals - and allows you to chat on the phone while simultaneously surfing the Internet at high speed.