Norphonic is a leading global manufacturer of robust VoIP telephones for industrial and emergency areas. The company produce ... voice over Internet protocol phones (VoIP, SIP phones), mining/tunneling phones, SOS emergency telephones, industrial telephones, and a range of heavy duty cables and telephone interconnect products. The company serve a wide range of market sectors worldwide including transport, road tunnels, utilities, offshore, renewable energy sectors and much more. read more