The GD007 USB Cordless Skype Phone solution directly supports Skype which controlled on PC side and can switch between with traditional PSTN phones . It supports all kinds of analog telephone devices and analog PBX system , it is pluged into just like general PSTN calling application and only used a button to switch skype to VOIP function . The farthest distance against its power of our vendor could take off is about 300 meter . It is the ideal selection for our vendor's conference or being off their office .