How Do VoIP Phones Work?
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Definition
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VoIP refers to Voice Over IP, which is the process of transmitting voice signals across telephones that connect to an Internet Protocol network instead of a typical phone system. VoIP uses three types of technology for communication: ATA, IP phones or computer-to-computer service. ATA is the most common and uses a telephone adaptor for standard phones. IP phones use devices that are normal phones with network connectors for Ethernet networks, and computer-to-computer uses laptops or desktops that act as phones.
Signal Transmittal
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Voice is converted to digital signals and transmitted. When phone calls are made, the voice signals are taken by the computer network managing the devices. The network uses packet-switching technology and CODECs. The CODEC is software that can convert voice (sound) into electronic, digital signals. The digital signal is broken up for faster delivery and transmitted via packet-switching technology. Packet switching is a blend of network software and hardware which can route packets efficiently and assemble them in order, despite how they are sent and arrive.
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Signal Receipt
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The signals are received on the other end of the VoIP network. A CODEC is waiting on the other end; it receives the digital packets and reassembles them using packet-switching. The digital packets are converted back to analog signals (sound) and relayed to the phone or device on the other end.
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