As we all know, the telephoneset is the piece of hardware that is closest to the human being inVoIP. It is the main interface between the user and the technology,and it encloses both input and output for voice. In order for you touse with VoIP, you will find several types of phones. Most people,who have been using the PSTN or POTS service, would have investedmuch money on their existing phones they use over these services. Andat the same time they can still use them for VoIP, provided they areequipped with an ATA (Analog Telephone Adapter). Also, as you mayhave already known, the best phones you can use with VoIP are IPphones, also called SIP Phones. These are specifically designed to beused for VoIP, and they have features and functionalities that otherconventional phones don't have. Another phone with which to use VoIPis a softphone which is a phone which is not physically one. It is inface a piece of software installed on a computer. There us a keypadalso in its interface and you can use this keypad to dial numbers. Somany people nowadays prefer to use a softphone for the need ofcommunicating overseas since they have recognized that it is highlycostly to buy a phone card when compared to using a VoIP service. Another typeof phone made for VoIP is an IP handset. An IP handset is notindependent in the sense that it is made to be connected to a PC, tobe use with a softphone.