Eliminate the high frequency noise used by ADSL services from being heard on the phone.<br><br>Specification<br>Brand: 2Wire<br>Input: DSL + Phone<br>Made in China<br><br>How to use:<br>Connect your telephone devices to the phone side of the filter/ DSL router to the DSL side and plug the filter into the wall socket.<br><br>Functions as a splitter as well if you need to share a phone line with two phones.