VoIP Voice over IP
Submitted by juergen on 19. December 2006 - 12:25.
Voice over Internet
Protocol transfers voice through IP packets through the Internet. VoIP can use special hardware or a PC environment to achieve this purpose.
VoIP works like that, digitalizing voice in data packets, sending and reconverting them in voice.
Digital format can be better controlled: it can be compressed, routed, converted to a new better format. Digital signals are more noise tolerant than the analog one.
VoIP use TCP/IP to go from the origination across the network to the destination. TCP/IP is an Internet protocol with a leading IP packet to control communication and the layload.
Using a PSTN line, you typically pay for time you use to the PSTN company. With VoIP you can talk all the time with every person you want as far as you want without paying for the time. In addition, you can talk with many people at the same time.
A major advantage of VoIP and VoIP telephony is that it avoids the tolls charged by ordinary telephone service.
At the same time, you can also exchange data with people you are talking with, sending images, graphs and videos.
VoIP needs a devices as a gateway. The gateway receives packetized voice transmissions from users and then routes them to others, using a carrier system interface, sends them over the public switched telephone network.
How does it work?
Many years ago we discovered that sending a signal to a remote destination could have be done also in a digital fashion.
VoIP works like that, digitalizing voice in data packets, sending and reconverting them in voice.
Digital format can be better controlled: it can be compressed, routed, converted to a new better format. Digital signals are more noise tolerant than the analog one.VoIP use TCP/IP to go from the origination across the network to the destination. TCP/IP is an Internet protocol with a leading IP packet to control communication and the layload.
The advantages using VoIP rather PSTN
Using a PSTN line, you typically pay for time you use to the PSTN company. With VoIP you can talk all the time with every person you want as far as you want without paying for the time. In addition, you can talk with many people at the same time.
A major advantage of VoIP and VoIP telephony is that it avoids the tolls charged by ordinary telephone service.
At the same time, you can also exchange data with people you are talking with, sending images, graphs and videos.
Voice over IP to Phone Communication
VoIP needs a devices as a gateway. The gateway receives packetized voice transmissions from users and then routes them to others, using a carrier system interface, sends them over the public switched telephone network.
