Voice Over Internet Protocol - VoIP - Free Phone Calls - PSTN Free - ivr - Nxx

What is Voice Over IP

Voice over Internet Protocol (VoIP) Communication

What is VoIP?

1. VoIP  tranfers voice through IP packets over the Internet. VoIP can use special hardware or a PC environment to achieve this purpose.

How does VoIP work?

2. A number of years ago we discovered that sending a signal to a remote destination could be done digitally. VoIP works by digitalizing voice in data packets, sending and reconverting them in voice. Digital format can be better controlled: it can be compressed, routed and converted to a new better format. Digital signals are more noise tolerant than  analog signals.
   
   VoIP uses TCP/IP to go from the origination point across the network to the destination. TCP/IP is an Internet protocol with a leading IP packet to control communication and the payload.

The advantages using Vo IP instead of Public Switched Telephone Network

3. With a PSTN line, you typically pay for time you use to the PSTN company. With VoIP you can talk as long as you want with any person you want as far away as you want without paying for the time. In addition, you can talk with many people at the same time.
   The major advantage of VoIP and Internet telephony is that it avoids the tolls charged by ordinary telephone service.
   You can also exchange data with people you are talking with simultaneously, sending images, graphs and videos.    

Voice over IP to Phone Communication

4. Voice over IP requires a device as a gateway. The gateway receives packetized voice transmissions from users and then routes them to other users, utilizing a carrier system interface and then sends them over the public switched telephone network.

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