What ah speeds phone? It and fixed phone different?
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Users questions: Wrong word it! VoIP Internet telephony
Experts answer:, also known as IP telephony, it is through the Internet Protocol (InternetProtocol, IP) for voice transmission. The traditional way of international calls is to send analog voice signal is converted first by copper The sound transmitted to the other side. VoIP sucked the sound through the gateway (gateway) is converted to data signals, and is compressed into data packets * packet), and then transmitted from the Internet, data packets received by the receiver, the gateway will unzip it, re-converted into audio to listen to the other. Generally speaking, the current network telephone line can be divided into three kinds: PCtoPC, PCtoPhone, PhonetoPhone. Internet phones using TCP * IP protocol, by special software into the caller's voice digital signal (usually compressed again, and this is the network power If the software key technical points of good or bad), and then packaged to form a small packet. Free search for small data packet network of free space, the voice data to each other, each other's specialized equipment or software after receiving packets for a voice speaking in front of data packets into a reverse step, Ru Guo received the other Device is inconsistent, but also for technical processing to enable speech to restore. Call the whole, we do not specially dedicated leased lines, but only exploit any tiny opening to use the network, saving call costs substantially, although there will be, "see no sewing needle insertion" of the time, this is the advantages of VoIP is Network phone Shortcomings.
Experts answer:, also known as IP telephony, it is through the Internet Protocol (InternetProtocol, IP) for voice transmission. The traditional way of international calls is to send analog voice signal is converted first by copper The sound transmitted to the other side. VoIP sucked the sound through the gateway (gateway) is converted to data signals, and is compressed into data packets * packet), and then transmitted from the Internet, data packets received by the receiver, the gateway will unzip it, re-converted into audio to listen to the other. Generally speaking, the current network telephone line can be divided into three kinds: PCtoPC, PCtoPhone, PhonetoPhone. Internet phones using TCP * IP protocol, by special software into the caller's voice digital signal (usually compressed again, and this is the network power If the software key technical points of good or bad), and then packaged to form a small packet. Free search for small data packet network of free space, the voice data to each other, each other's specialized equipment or software after receiving packets for a voice speaking in front of data packets into a reverse step, Ru Guo received the other Device is inconsistent, but also for technical processing to enable speech to restore. Call the whole, we do not specially dedicated leased lines, but only exploit any tiny opening to use the network, saving call costs substantially, although there will be, "see no sewing needle insertion" of the time, this is the advantages of VoIP is Network phone Shortcomings.
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