Apparatus for linking computers into networks; Apparatus for network communication; Apparatus for telephone networks; Apparatus for transmitting data by the telephone network; Apparatus for use in communications networks; Cabling networks (installations) incorporating fibre optic cables; Communication devices for linking computer networks; Communications networks; Computer apparatus for use in local area networks; Computer apparatus for use with computer networks; Computer installations (networks); Computer network apparatus; Computer network installations; Computer network operating installations; Computer networking apparatus; Computer networking installations; Computer networks; Computer networks for the communication of data; Computer networks for the processing of data; Computer networks for the storage of data; Computer programs for the creation of networks; Computer programs relating to computer networks; Computer programs relating to local area networks; Connecting elements for communication networks; Data networks; Data transmission networks; Devices for use in the networking of computers; Electronic industrial network apparatus for high speed data transmission; Electronic networking apparatus for telephone systems; Installations for use in forming computer networks; Installations for use in the networking of communications apparatus; Installations for use in the networking of computers; Interface network modems; Linked computer networks; Local area networking apparatus for the switching of data; Local area networking apparatus for the transmission of data; Local area networks; Local optical fibre networks; Modems for communications networks; Network applications being computer programs; Network boards; Network controllers being computer apparatus; Network controlling apparatus; Network management control apparatus; Networks for the interconnection of communication systems; Radio for radio communication networks; Receiving devices for connection to communication networks; Repeaters for use in data networking; Telecommunications networks; Video local area network controllers; Antennas for wireless communication apparatus; Wireless communication apparatus; Wireless receiving apparatus; Wireless transmission apparatus; Wireless transmission apparatus for remote control; Wireless transmitters