4474001 Modems, internal cards 4474002 Modems, external 4474003 Modems/terminal adaptors, integrated services digital network (ISDN) 4474004 Modems, ADSL (asymmetrical digital subscriber line) 4474005 Modems, DSL (digital subscriber line) 4474006 Modems, VDSL (very high bit-rate DSL) 4474007 Modems, asynchronous transfer mode (ATM) (terminating equipment) 4474008 Modems, fibre optic 4474009 Modems, radio frequency (RF), for wireless data communication 4474010 Modems, infrared, for wireless data communication 4474011 Modems, PCMCIA/PC card 4474012 Modems, global system for mobile communication (GSM) 4474013 Modems, fax/voice 4474014 Modem pools 4474015 Modems, cable 4474016 Modems, ruggedised, industrial 4474017 Modems, power line communication (PLC) 4474018 Bridges, network 4474019 Routers (computer network) 4474020 Routers (computer network), wireless 4474021 Routers, digital subscriber line (DSL) 4474022 Firewalls, Internet 4474023 Acoustic couplers, data communication 4474024 Modem telephone adaptors to international systems 4474025 Data communication transmitters-receivers 4474026 Line splitters, telecommunication and data transfer 4474027 Data communication switching equipment 4474028 Data switches, manual 4474029 Data switches, automatic 4474030 Data switches, fibre optic, for computer networks 4474031 Fast Ethernet switches 4474032 Gigabit Ethernet switches (GBE) 4474033 10 Gigabit Ethernet switches 4474034 Computer network switches, layer 2 4474035 Computer network switches, layer 3 4474036 Computer network switches, layer 4 4474037 Computer peripheral sharing devices 4474038 Keyboard video and mouse (KVM) switches 4474039 Signal splitters, video monitor 4474040 Signal boosters/amplifiers for data cables 4474041 Network repeaters 4474043 Answering machines, videotex 4474044 Adaptors, videotex 4474045 Adaptors, asynchronous conversion interface (ACIA) 4474046 Protocol analysers, computer 4474047 Computer network analysers 4474048 Coders and decoders for data networks 4474049 Network traffic shaping equipment 4474050 Internet protocol (IP) broadband boxes, set-top
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