Denphone | The Voice, Video & Network Specialists

Denphone VoIP PBX

Denphone Telephone Systems and Solutions
Japan's most flexible PBX solution
We provide the Denphone range of PC/Linux based software PBX systems. Our solutions are based on the Asterisk open source architecture and support a wide variety of configurations and connectivity options.

DenPhone systems support ordinary analogue telephones, as well as IP telephones based on SIP, IAX, and IAX2. We also provide full connectivity solutions to the Japanese telephone network (analog, ISDN INS-64, INS 1500, SIP).

DenPhone has a wide variety of connectivity solutions to local Japanese carriers such as NTT (ISDN, INS 1500), Colt, and other local and long distance carriers in Japan.

We can also connect you to low cost IP Telephony providers in Tokyo Japan, the rest of Asia, and abroad to reduce your long distance and overseas telephone bills.

Custom Solutions
DenPhone can build a wide variety of custom IP PBX and telephony solutions based on your specific requirements. This includes channel banks, IP/Analog converters, IVR voice menus with database connectivity, credit card billing and ID systems and more. Just ask us, we can build it for you at an affordable price if you cannot find it elsewhere.


We are a registered Reseller of Digium products in Japan. Digium is the creator of the leading open source PBX platform, Asterisk.

For more information, please contact us via the feedback form, or telephone us at 81-3-4550-1405.



Tel: +81-3-4550-1405 (Tokyo)

Tel: +81-6-4560-3200 (Osaka)

Fax: +81-3-6234-9666

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