What is a VoIP telephone / an IP Phone?
A VoIP telephone, also known as a SIP phone or a softphone, allows the user to make phone calls to any softphone, mobile or land line by using Voice over IP (VoIP). A VoIP phone converts the standard telephone audio into digital format so the voice is carried through the internet instead of the traditional PSTN system. A VoIP telephone can be a simple software-based softphone or a hardware device that looks a lot like a common telephone.
