Media Server:

In a PacketCable environment (and other VOIP networks) a Media Server processesses and generates media streams (usually RTP).

It handles functions like:

• decoding DTMF tones
• bridging multiple media streams into a conference
• playing announcemnts (e.g. "This number is not in service")
• processing VoiceXML scripts
• speech recognition
• text to speech
• recording audio
• etc.

A Media Server is typically controlled using SIP messages sent by a softswitch or application server.
An IVR system would typically be composed of an Media Server, and an Application Server.

Media Server Vendors:

• AudioCodes: offer IPmedia 2000/3000/5000/8000
• IPunity
• Cognitronics
• Convedia (now RadiSys)
• Database Systems Corp. CTI, IVR and Voice Broadcasting Servers
• i6net
• Pactolus
• Snowshore Networks (now part of Dialogic Corporation as the Dialogic IP Media Server)
• Thinkengine Networks

• Asterisk: The Open Source PBX includes various media server features

See also

• RTP, SIP
• Unified messaging
• Computer telephony, ACD, IVR, and Voice broadcasting Technology