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What do Media Servers Do? A media server contains media processing components that are able to manipulate RTP streams. Typical processing includes mixing multiple streams, transcoding a stream (e.g., from G.711 to MS-GSM), storing or retrieving a stream (e.g., from RTP to HTTP), detecting tones (e.g., DTMF), converting text to speech, and performing speech recognition. Note that an MRCPv2 server may offer the low-level processing for the last two services, where the media server is a client to the MRCPv2 server. Also note it is common to call the package of detecting user input, recording media, and playing media "Interactive Voice Response," or IVR. |