SpinPhone is SpinNet's VoIP phone, a voice communication service using IP technology. By utilizing an IP network, calls between users of not only SpinNet, but also other ISPs in the alliance are free. Furthermore, you can save a lot when calling regular phones and you don't have to worry about telephone charges any more. Please signup for SpinPhone, a very economical way to call. SOFTBANK TELECOM Corp. will provide the service in accordance with the agreement below. "SpinNet Contract Agreement"(PDF) "Internet Connection Service Contract Agreement" (PDF; KDDI Corp; Japanese only)