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Mobile communication service consultants
Wide area network (WAN) design and management services
Trunked radio service providers
Network providers for mobile telephones (cellular phones)
Telecommunication operators
Telephone network operators, wireless local loop
Telephone network operators, analog
Telephone network operators, digital
Telephone network operators, fibre optics
Software consultants, data warehousing
Protocol analysers, computer
Modems, internal cards
Modems, external
Modems/terminal adaptors, integrated services digital network (ISDN)
Modems, ADSL (asymmetrical digital subscriber line)
Modems, DSL (digital subscriber line)
Modems, VDSL (very high bit-rate DSL)
Modems, asynchronous transfer mode (ATM) (terminating equipment)
Modems, fibre optic
Modems, radio frequency (RF), for wireless data communication
Modems, infrared, for wireless data communication
Modems, PCMCIA/PC card
Modems, global system for mobile communication (GSM)
Modems, fax/voice
Modem pools
Modems, cable
Modems, ruggedised, industrial
Modems, power line communication (PLC)
Adaptors, videotex
Adaptors, asynchronous conversion interface (ACIA)
Modem telephone adaptors to international systems
Computer peripheral sharing devices
Computers and computer hardware, second-hand
Coders and decoders for data networks
Telephone accounting and billing systems
Telecommunication systems, satellite, mobile
Telephone conversation recording machines
Telephone ringing machines
Call announcers for telephones
Telephone announcement systems, recorded
Information systems, telephone, voice activated
Integrated services digital network (ISDN) switches
Teleloop systems, transmitter to hearing aid
Vehicle location systems, automatic
Communication equipment, telephonic, for lifts
Security encryption equipment, telecommunication systems
Telephone conference telecommunication equipment
Data communication systems, base to taxi
Telecommunications equipment, time division duplex (TDD)
Emergency call systems for motorways
Call centre management systems
Image transmission and compression-expansion equipment
Voice over DSL (VoDSL) equipment
Voice data systems, private networks
Integrated voice mail systems, private networks
Answering machines, videotex
Telephone branch exchanges, private, Internet protocol (IP PBX/VoIp PBX)
Telecommunication terminals
Key system/key telephone systems
Call systems, remote control, for the elderly and disabled
Telephone impulse transmitters, automatic
Telephone intercommunication equipment, selective
Telephone intercommunication equipment, conference
Telephone intercommunication systems, railway
Telephone intercommunication equipment, aircrew
Telephone intercommunication equipment, marine, shipborne
Telephone intercommunication equipment, sub-sea
Telephone intercommunication equipment, flameproof
Mobile telephones (cellular phones), second-hand
Acoustic couplers, data communication
Telecommunications network equipment, fibre to the curb systems (FTTC)
Telecommunications network equipment, fibre to the home systems (FTTH)
Telecommunications network equipment, fibre in the loop systems (FITL)
Telecommunications network equipment, hybrid fibre-coaxial (HFC)
Routers, digital subscriber line (DSL)
Routers (computer network), wireless
Firewalls, Internet
Photonic networking systems
Local multipoint distribution service (LMDS) network equipment
Network repeaters
Bridges, network
Network traffic shaping equipment
Internet protocol (IP) broadband boxes, set-top
Data communication transmitters-receivers
Line splitters, telecommunication and data transfer
Signal splitters, video monitor
Signal boosters/amplifiers for data cables
Routers (computer network)
Telephone switchboards
Data switches, manual
Data switches, automatic
Data switches, fibre optic, for computer networks
Data switches, remote
Fast Ethernet switches
Gigabit Ethernet switches (GBE)
10 Gigabit Ethernet switches
Computer network switches, layer 2
Computer network switches, layer 3
Computer network switches, layer 4
Keyboard video and mouse (KVM) switches
Data communication switching equipment
Computer network analysers
Alarm centres, automatic
Prisoner-to-warder call systems, prison complexes
