Date of Publication :20th August 2020

Abstract: Voice Over Internet Protocol is the developing innovation according to the present business necessity. Such a large number of organizations utilizing VoIP answers for their systematic call communities, communication promoting called auto dialers frameworks and voice message calling frameworks. VoIP utilizes the Internet as the primary correspondence media to transfer the voice as data packets on the system. These dat packs are move to the normal PSTN network utilizing VoIP Gateways called FXS or GSM Gateway. Electronic Private Branch Exchange system (EPBX) is communication framework with wireline correspondence. This customary PBX framework for example EPABX was supplanted by IP-PBX framework, the web convention is found PBX framework dependent on (VOIP), which passes on voice as an information over the web. An IP-PBX framework is a finished communication framework that gives liberated from cost, without SIM card wireless calling. There is one significant specialized gadget called VoIP Gateway and for utilizing SIM card called GSM Gateway which is the go between the IPPBX dialer and the general public switched telephone network.

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