The present invention provides a method and apparatus for eliminating or reducing local area and broad area interference in a twisted pair transmission system. The apparatus of the present invention comprises a detection device, such as an antenna, for example, for detecting electromagnetic interference...http://www.google.es/patents/US6330275?utm_source=gb-gplus-sharePatente US6330275 - Method and apparatus for overcoming periodic disturbances in digital subscriber loops
Method and apparatus for overcoming periodic disturbances in digital ...
