Abstract:
For many years, voice over internet protocol (VoIP) has held the promise of enabling the next generation of voice communication within the enterprise. In this project paper we discuss about “The Study of VOIP “. The study of voice over internet protocol includes the fundamentals of VoIP, including two techniques of voip that is H.323 and SIP. This two standards currently complete for the domains of IP telephony signaling: the H.323 protocol suite by ITU-T, and the Session Initiation Protocol (SIP) by IETF. Both of this signaling protocol provides mechanisms for call establishment and teardown, call control and supplementary services, and capability exchange. We also study the comparisons of these two protocols in terms of Functionality, Quality of Service (QoS), Scalability, Flexibility, Interoperability, and Ease of Implementation. We also discussed briefly on two gateway control protocol, one is MGCP and another is H.248. We highlighted about the voice over internet protocol in Bangladesh. Finally we consider the best protocol on voice over internet protocol is session initiation protocol in terms of ease of customization, protocol encoding and ease of installation as companied to other protocol.
