... in 2002. We focus on the development of USB phone,USB skype gateway,VoIP phone,sip ata,gsm sms printer,gprs online printer ,bluetooth ... ,mini receipt printer,GSM desk phone,GSM fixed wireless terminal,bluetooth handset.We have a series of usb phone:Suitable Users1,All users who ... for the second development) Good for family and office use USB Phone compatible with Net2Phone/X-Pro/X-Lite/Skype/Free Call