An integrated cable-termination circuit is presented that can be selectably automatically configured to terminate a signal cable in conformance with one of a plurality of electrical interface standards, including, for example, CCITT/EIA standards V.11/RS-422 and V.35. Selected termination configurations...http://www.google.de/patents/US6018549?utm_source=gb-gplus-sharePatent US6018549 - Selectable multi-protocol cable termination
