Denphone specializes in voice, video and networking systems. We were one of the first companies to bring the Asterisk IP telephony platform into Japan, and are now one of the market leaders in open source telephony in Japan. Our client base is diversified geographically and covers a wide range of business sectors. We have certified Cisco, Polycom and Panduit engineers on staff, and we can provide and support a wide range of technology platforms including Cisco, Avaya, Asterisk, Polycom, Mitel, Amazon AWS and others.