Voip Basic Terminology
Voip Basic Terminology VoIP (Voice over IP) – The process of making and receiving voice transmissions over any IP network. IP networks include the Internet, office LANs, and private data networks between corporate offices. The main advantage of VoIP is that users can connect from anywhere and make phone calls without incurring typical analog telephone charges, such as for long-distance calls.
IP Internet Protocol – A packet-based protocol for delivering data across networks.
Soft phone – IP telephony software that lets users send and receive calls from nondedicated hardware, such as a PC or Pocket PC device. It is typically used with a headset and microphone.
IP phone – also called an Internet phone or broadband phone. An IP phone plugs into a broadband Internet connection to make and receive VoIP calls over the Internet.
SIP - Session Initiation Protocol. One of the newer, more common signaling protocols used for VoIP.
IP Telephony (Internet Protocol telephony, also known as Voice over IP Telephony) A general term for the technologies that use the Internet Protocol’s packet-switched connections to exchange voice, fax, and other forms of information that have traditionally been carried over the dedicated circuit-switched connections of the public switched telephone network (PSTN).
The basic steps involved in originating an IP Telephony call are conversion of the analog voice signal to digital format and compression/translation of the signal into Internet protocol (IP) packets for transmission over the Internet or other packet-switched networks; the process is reversed at the receiving end.
The terms IP Telephony and Internet Telephony are often used to mean the same; however, they are not 100 per cent interchangeable, since Internet is only a subcase of packet-switched networks.
For users who have free or fixed-price Internet access, IP Telephony software essentially provides free telephone calls anywhere in the world. However, the challenge of IP Telephony is maintaining the quality of service expected by subscribers. Session border controllers resolve this issue by providing quality assurance comparable to legacy telephone systems.
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