VoIP Tutorial

INTRODUCTION Voice over IP (VoIP) defines a way to carry voice calls over an IP network including the digitization and packetization of the voice streams. IP Telephony utilizes the VoIP standards to create a telephony system where higher level features such as advanced call routing, voice mail, contact centers, unlimited calling, long distance calling etc., […]




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IP Telephony and VoIP-Some Questions Asked

Is it worthy to implement an IP Telephony infrastructure in a business? A company that is just starting out to implement a network infrastructure should think seriously to invest in VoIP and try to avoid the investment in other telephony infrastructure (e.g legacy PBX system) to support voice communications. Also, a firm that has already […]




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What is a SIP IP Phone

A SIP IP Phone is actually a normal IP Telephone but it uses the SIP protocol for voice signalling communication. It can therefore allow a user to make and receive calls using the Voice over IP (VoIP) technology. The SIP telephone must be used with an IP Telephony system (IP PBX) that supports the SIP […]




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What is H323 and SIP

What is H323 H323 is a set of standards from ITU-T that provides a set of protocols for offering audio and video communication over a computer network. H323 is a relatively old protocol and is now replaced by the SIP Protocol – Session Initiation Protocol. One of the advantages of SIP is that it is […]




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The rapid growth of VoIP

Voice over Internet Protocol (VoIP) telephony is growing rapidly worldwide, usually within the double-play business model, i.e the provision of broadband internet and telephony together. The benefits of the new technology have literally revolutionized the world of fixed-line telephony and now VoIP is directly threatening all the major traditional telecommunications companies. As the VoIP service […]




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The Introduction of VoIP in Telecommunications

The increased needs for voice and data communication in small and larger businesses have resulted in finding new methods for simultaneously communicating these two forms of information. The technology which dominates to meet those needs is Voice over IP – voice over Internet Protocol TCP / IP. The Voice over IP (VoIP) service uses the […]




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