Headsets; Telephones; Computer network switches; Conference phones; Digital telephones; Headsets for telephones; Network routers; Paging equipment; Telephone apparatus; Telephone call router, for home and office touchtone phones, for international and long distance calls made from various telephony platforms including VoIP platform without the requirement for internet; Telephone headsets; Telephones incorporating intercommunication systems; Video-telephones; Video telephones; Voice over inter...