Redundancy of data and/or inline power in a wired data telecommunications network from a pair of network devices via a selection device is provided by communicating redundant signals with each of the pair of network devices and coupling ports of the first network device and corresponding ports of the...http://www.google.com/patents/US7793137?utm_source=gb-gplus-sharePatent US7793137 - Redundant power and data in a wired data telecommunincations network
