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