An isolation system for terminating a phone line is provided. The invention may comprise a capacitive isolation barrier across which a digital signal is communicated. Clock recovery circuitry may be employed on one side of the isolation barrier to extract timing information from the digital signal communicated...http://www.google.fr/patents/US6654409?utm_source=gb-gplus-shareBrevet US6654409 - Direct digital access arrangement circuitry and method for connecting DSL circuitry to phone lines
Direct digital access arrangement circuitry and method for connecting DSL ...
