Literature Review on Voice over Internet Protocol. by Lawal Babatunde from Tai Solarin University of Education
CHAPTER TWO
LITERATURE REVIEW ON VoIP
2.0 Background of VoIP
The first implementation of transmitting voice over the network was in 1973 through Network Voice Protocol (NVP) which was invented for Advanced Research Projects Agency Network (ARPANET). In 1990’s, there were a lot of VoIP applications that faced the problem of incompatibility due to fundamental differences between different vendors. Therefore, standards, specifications and interoperability guidelines were founded in May 1996 to standardize VoIP technology, which was a consortium of major equipment vendors and technology organizations including Cisco, Vocal Tec, 3Com, Microsoft, US Robotics and Net Speak. Nowadays, the VoIP forum is operating under the umbrella of international Multimedia Teleconferencing Consortium (IMTC). However in 2003, there was a public hearing, with the purpose of gathering information on advancements, innovations, and regulatory issues related to VoIP services which was announced by the Federal Communications Commission (FCC) as a VoIP forum [5].
2.1 What is VoIP?
Voice over Internet Protocol (VoIP) is the assembly of voice into IP data which can be transmitted over an IP network to an addressable (IP address) destination. VoIP calls are packet switched while analog calls are circuit switched. Packet switched data are data that can be routed through different routes on a network to reach a destination while circuit Switched is a connection where a physical path is dedicated between two end points [3]. [5] Describe VoIP as the transport of voice over IP based data networks like WAN, MAN and LAN. In other words, it is a method for taking analog audio signals and turning them into digital data organized into packets that can be transmitted over the Internet. [9] Defines VoIP as the transmission of voice communications as datagram packets over IP networks.
VoIP is a term used in IP telephony for a set of facilities for managing the delivery of voice information using the Internet
LITERATURE REVIEW ON VoIP
2.0 Background of VoIP
The first implementation of transmitting voice over the network was in 1973 through Network Voice Protocol (NVP) which was invented for Advanced Research Projects Agency Network (ARPANET). In 1990’s, there were a lot of VoIP applications that faced the problem of incompatibility due to fundamental differences between different vendors. Therefore, standards, specifications and interoperability guidelines were founded in May 1996 to standardize VoIP technology, which was a consortium of major equipment vendors and technology organizations including Cisco, Vocal Tec, 3Com, Microsoft, US Robotics and Net Speak. Nowadays, the VoIP forum is operating under the umbrella of international Multimedia Teleconferencing Consortium (IMTC). However in 2003, there was a public hearing, with the purpose of gathering information on advancements, innovations, and regulatory issues related to VoIP services which was announced by the Federal Communications Commission (FCC) as a VoIP forum [5].
2.1 What is VoIP?
Voice over Internet Protocol (VoIP) is the assembly of voice into IP data which can be transmitted over an IP network to an addressable (IP address) destination. VoIP calls are packet switched while analog calls are circuit switched. Packet switched data are data that can be routed through different routes on a network to reach a destination while circuit Switched is a connection where a physical path is dedicated between two end points [3]. [5] Describe VoIP as the transport of voice over IP based data networks like WAN, MAN and LAN. In other words, it is a method for taking analog audio signals and turning them into digital data organized into packets that can be transmitted over the Internet. [9] Defines VoIP as the transmission of voice communications as datagram packets over IP networks.
VoIP is a term used in IP telephony for a set of facilities for managing the delivery of voice information using the Internet