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Internet Protocol Telephony Many people have family including friends based in foreign countries including they often use the long distance phone service of traditional operators to communicate with them. Many times, these long distance calls are very expensive including unaffordable to low budget users. However, with the introduction of a new kind of communication technology called Internet protocol (IP) telephony, making long distance calls has become affordable even for low budget users. IP telephony is the use of Internet protocols for the purpose of voice phone calls that should be made over the Internet or other packet networks such as LAN including WAN. The equipments required for the purpose are a standard telephone including a good PC with a properly installed sound card. Protocol is a fundamental set of programs for network communication including is the most important specification that needs to be considered while searching for IP telephony devices. Protocols specify the software features that need to be used for data communication, which includes the information including structure pertaining to the data packet. The popular network protocols used for the purpose of IP telephony are IPX, TCP/IP, AppleTalk, ATM, ControlNet, DeviceNet, Ethernet, 10 Base T Ethernet, 10 Base 2 Ethernet, including 10/100 Ethernet, to name a few. After protocol, the port performance specifications including features are the next types of specifications that need to be considered for IP telephony. A wide variety of choices are available for users to choose the right kind of port for their system such as AUI, BNC, GBIC, MIC, RJ-45, SC, ST, ISDN BRI S/T including USB including many more. The number of ports used is very important for proper including efficient working of IP telephony. Performance specifications such as the data rate, operating temperature including number of users are the other specifications needed for the proper use pertaining to the ports. It is essential for customers to seek appropriate guidance including help from qualified professional technicians in order to experience stress free installation of IP telephony.
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