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A VoIP phone can be defined as an entity that is used to make telephone calls over the internet. A VoIP phone utilises the Voice over Internet Protocol (VoIP) technology wherein our voice is converted into digital signal that is transmitted over the Internet. VoIP phones enable you to enjoy the benefits of VoIP technology.
The VoIP technology is based on protocols, such as SIP, H.323 or proprietary ones like Skype.