Abstract: An optical networking system has connector blocks, each having a series of sockets. Each socket receives an optical transceiver and provides a full EMI shield. An active cooling system has heat pipes for drawing heat from the devices, through the sockets and to a heat exchanger.

Abstract: An optical networking system has connector blocks, each having a series of sockets. Each socket receives an optical transceiver and provides a full EMI shield. An active cooling system has heat pipes for drawing heat from the devices, through the sockets and to a heat exchanger.

Abstract: A wireless local area network comprising a plurality of computing entities communicating over a common communications frequency within a local area network operates a transmission deferral method whereby each computing entity defers its own transmissions if it receives a signal at said communications frequency which is above a threshold value set within said computing entity, and which is decodable. Each computing entity is capable of varying dynamically the value of its threshold level above which receipt of signals results in the computing entity deferring its own transmission. Received signals on the communications frequency which are less than the threshold value do not result in the computing entity deferring its transmissions, but are ignored by the computing entity. The threshold value is varied according to whether traffic from more remote signal sources are sufficiently intense that the local traffic cannot be decoded.