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Trunked radio service providers
Telephone network operators, wireless local loop
Telephone network operators, analog
Telephone network operators, digital
Telephone network operators, fibre optics
Investment consultants
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
Hotel communication systems, complete
Teleloop systems, transmitter to hearing aid
Vehicle location systems, automatic
Communication equipment, telephonic, for lifts
Security encryption equipment, telecommunication systems
Telephone equipment for the disabled
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
Call distributors
Telex equipment
Image transmission and compression-expansion equipment
Voice over DSL (VoDSL) equipment
Voice data systems, private networks
Integrated voice mail systems, private networks
Telephone branch exchanges, private, Internet protocol (IP PBX/VoIp PBX)
Telecommunication terminals
Key system/key telephone systems
Emergency telephones, portable, GPS/GSM
Telephones, feature and novelty
Telephones with electric generator
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 systems, wireless, indoor
Telephone intercommunication equipment, aircrew
Telephone intercommunication equipment, marine, shipborne
Telephone intercommunication equipment, sub-sea
Telephone intercommunication equipment, industrial
Telephone intercommunication equipment, flameproof
Telephone intercommunication equipment, loudspeaker type
Telephone intercommunication equipment, push-button types
Telephone intercommunication equipment, direct speech
Telephones, Voice Over Internet Protocol (VOIP)
Internet telephones
Text telephones
Telephones, amplified
Mobile telephones (cellular phones), second-hand
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)
Photonic networking systems
Local multipoint distribution service (LMDS) network equipment
Telemetry equipment
Telephone switchboards
Videophones
Alarm centres, automatic
Prisoner-to-warder call systems, prison complexes
Patient-to-nurse call systems, hospital
Warden call systems for old peoples homes
