ImageMedia Gateway, also commonly referred to as VoIP Gateway is device which provides connection between an endpoint on VoIP packet-switched network and PSTN circuit-switched network.

The gateway translates between transmission formats and the communication protocols that are used on each side. The gateway packetizes the voice and routes it over VoIP network. In carrier class system, media gateways are provided as stand-alone devices.

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Application Server Print E-mail

ImageApplication Server provides a variety of features and applications that can operate on IP-based network. Application Server can be categorized into Media Server and Feature Server.

A Media Server is classified from Feature Server separately because applications need specific processing for media content. It means a Media Server must be supported by digital signal processing hardware with high performance.

A Media Server in not part of switching function. Feature Server provides content service to user. Usually this service is specific program with customization. Therefore, the server must support standard Application Programming Interface (API) to allow other programs modify the program.
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