VoIP (Voice over Internet Protocol) is a transmission technology that allows you to send voice communication through IP based network such as the Internet or packet-swiched networks. Function of VoIP in general similar to the technology PSTN telephone (public switched telephone network) that allows long-distance conversation. Development of VoIP began intensively in 1994 and began to be introduced widely through the community service broadband internet access where the user can make and receive phone calls as a PSTN. The VoIP technology has grown up to service the "unified communications", which makes all communications-phone calls, fax, voice mail, e-mail, web conference, etc.-as a unit district that is sent and received with a variety of communications tools including telephone hand held.
Due to bandwidth efficiency, low cost management, and various advantages offered by VoIP technology, the various fields of business in the world slowly began to change their choice of cable traditional phone system to VoIP to reduce the cost of the phone company.
Due to bandwidth efficiency, low cost management, and various advantages offered by VoIP technology, the various fields of business in the world slowly began to change their choice of cable traditional phone system to VoIP to reduce the cost of the phone company.
