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      A term dreamt up by the VoIP community to distinguish software 
      applications capable of making VoIP calls to physical hardware devices 
      (phones, adapters - hardphones) which can also make
      VoIP telephone calls. Examples of 
      SoftPhones are 
      Skype 
      Google Talk 
      Yahoo Messenger 
      Microsoft Messenger 
      These are all PC to PC VoIP telephony so you need your computer to make 
      VoIP calls with SoftPhones, you still need a headset or speakers and 
      microphone of course to actually do the speaking and listening bit. 
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