Advantages
- save lots of money
- flexibility
- more than two person
- abundant, interesting and useful features.
- cheap user hardware and software
Devices that needed for VOiP
- Analog Telephone Adapters - An ATA is commonly called a phone adapter. it is important device used to act as a hardware interface between an analog PSTN telephone system and a digital VOiP line.
- Telephone Sets - the phone set is essential for VOiP, as it makes up the interface between people and the service. It is both an input an output device. Several types of phone can be used with VOiP, depending on the circumstances.
- PC Handsets - handsets resemble telephones but they connected to the computer through USB or a sound card. They work together with a soft phone allowing you to use VOiP more comfotably. They can also be plugged into an IP phone to allow many users using the same phone.
- PC Headsets - a PC headset is very coomon multimedia device which allows people to hear audio from computer and input the voice by using microphone.




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