Voice over Internet Protocol ( VoIP ), also called IP telephony , is a method and group of technologies for voice calls for the delivery of voice communication sessions over Internet Protocol (IP) networks, such as the Internet. The broader terms Internet telephony , broadband telephony , ...
A VoIP phone or IP phone uses voice over IP technologies for placing and transmitting telephone calls over an IP network, such as the Internet. This is in contrast to a standard phone which uses the traditional public switched telephone network (PSTN). Digital IP-based telephone service us...
A telephone VoIP adapter (TVA), also called digital telephone adapter , is a device that interfaces digital private branch exchange (PBX) telephone sets to a Voice over Internet Protocol (VoIP) network, using, for example, the Session Initiation Protocol. An analog telephone adapter (ATA) ...
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유선전화(PSTN)와 VoIP의 차이점 기존 아날로그 유선전화의 경우 회선 독점방식인 PSTN(Public Switched Telephone Network)을 이용하였는데요. 아날로그 방식 PSTN은 우수한 통화 품질과 안정성을 보장하지만 고가의 통화료 및 관리/유지비가 든다는 단점이 있습니다. 또한 음성 이외의 데이터 전송에는 적합하지 않습니다. 반면 VoIP service는 패킷 망(=인터넷 망)을 사용하기 때문에 통화료가 저...
RM of St. Francois Xavier (Voice Over Internet Protocol) VOIP Telephone Service One-time $75.00 installation fee (plus applicable PST and GST)$40.00 per month (plus applicable PST and GST).VOIP ser...
An analog telephone adapter ( ATA ) or FXS gateway is a device for connecting traditional analog telephones, fax machines, and similar customer-premises devices to a digital telephone system or a voice over IP telephone network. An ATA is often built into a small enclosure with an internal...
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