Voice over internet protocol (VoIP) is a methodology in which several technologies are used to offer communication services over IP data network. VoIP refers to transformation of voice signals into digital data over the internet. VoIP uses internet as telephony network. A regular telephone, mobile phone, computer or VoIP phone can be used to make a call. VoIP services are distributed through various services such as the public switched telephone network (PSTN) and cable infrastructures. Power lines, wireless infrastructures and satellite are the other delivery providers. To implement VoIP services, several protocols are used such as inter asterisk exchange (IAX), media gateway control protocol (MGCP), real time protocol (RTP), session initiation protocol (SIP) and H.323 among others. The key benefit of VoIP service is its cost effectiveness. VoIP can also provide phone number portability and rich media services. Moreover, VoIP offers features such as user control interface, integrated applications, service mobility and other features. It is easy to use, install and troubleshoot VoIP services.
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The global VoIP services market is segmented by configuration into computer to computer, phone to phone and computer to phone. Computer to phone configuration segment is currently dominating the global market for VoIP services, whereas, with the rising demand for flexibility among residential and corporate consumers, the growth for phone to phone VoIP segment is expected to increase. The global VoIP services market is further segmented by call type includes domestic VoIP calls and international long distance calls. Another segment by which the global VoIP services market is bisected is by the end-users, which include corporate consumers, individual consumers and hosted business. The global market for VoIP services is further bifurcated on the basis of region it can be...