Considered as one of the latest advancements related to the use of computer networks, Voice over Internet Protocol (also known as VoIP) has been a helpful tool in improving digital communication. Other terms that are used by computer users to refer to VOIP are broadband telephony, voice over broadband, IP telephony and Internet telephony. These systems feature session control protocols to manage the calls efficiently. When it comes to encoding the speech as an audio stream and a digital audio, Voice over Internet Protocol uses audio codecs. To know more about VoIP, let us look at the benefits from using the system as well as the challenges faced by VoIP users.


What is VOIP? Voice over Internet Protocol (also known as VoIP) refers to a set of technologies used for the delivery or transmission of voice communications through the Internet, packet-switched networks and other IP networks. It is implemented in different ways with the use of both open and proprietary protocols. The different implementations of this system include Skype, H.323 and IMS.


The use of Voice over Internet Protocol is very advantageous. The use of this system allows people and corporations to save money because the billing is based on the amount of data transferred through the use of the Internet. Aside from this, VoIP has several interesting and helpful features such as call forwarding, conference calling as well as automatic redial. In addition, this system allows computer users to transfer several calls with the use of different protocols or standards like the Secure Real-Time Transport Protocol. Other services available with this digital communications tool are audio conferencing and video conversation.


Before using this system, it is important to know the limitations of Voice over Internet Protocol. One of the challenges or limitations of using the system is that it does not offer Quality of Service guarantees. Aside from these, users can experience congestion of information because data are transmitted in a computer network that commonly implements a fixed bandwidth. To avoid the congestion of data, some companies that use the system employ teletraffic engineering technologies.

To make sure that the use of VoIP will be efficient and fast, it is best to follow protocols that are associated with Physical Layer and Data link Layer such as Quality of Service standards. Aside from these, the other protocols that can be used to ensure efficient transmission of data are SIP RTCP Summary Reports, MGCP extensions as well as H.460.9 Annex B.