A media gateway is a translation device or service that converts media streams between disparate telecommunications technologies such as POTS, SS7, Next Generation Networks (2G, 2.5G and 3G radio access networks) or private branch exchange (PBX) systems. Media gateways enable multimedia communications across packet networks using transport protocols such as Asynchronous Transfer Mode (ATM) and Internet Protocol (IP). Because the media gateway connects different types of networks, one of its main functions is to convert between different transmission and coding techniques. Media streaming functions such as echo cancellation, DTMF, and tone sender are also located in the media gateway. Media gateways are often controlled by a separate Media Gateway Controller which provides the call control and signaling functionality. Communication between media gateways and Call Agents is achieved by means of protocols such as MGCP or Megaco (H.248) or Session Initiation Protocol (SIP). Modern media gateways used with SIP are often stand-alone units with their own call and signaling control integrated and can function as an independent, intelligent SIP end-points. Media gateway Market valued approximately USD 2 billion in 2016 is anticipated to grow with a healthy growth rate of more than 1.52% over the forecast period 2017-2025. Key factors which give growth to the Media gateway market include the need for high-quality communication over disparate networks; the modular structure of media gateways providing high flexibility to legacy networks; and session border functionality of integrated media gateways and Digital media gateways hold a larger share of the overall media gateway market. These gateways convert media streams in the form of digital data telecommunications for aiding voice, video, and fax services, among others, between dissimilar interfaces using different technologies. With the increase in the need for flexible and efficient solutions for a wide variety of call-control protocols and secure SIP trunking in an established voice infrastructure, the demand for digital media gateways is also increasing. Some of the key manufacturers involved in the market Nokia Corporation, AudioCodes, Avaya, Ribbon Communications, Ericsson, Huawei Technologies, Cisco Systems, ZTE Corporation, Dialogic, Synway Information Engineering. Acquisitions.. Read More..