Scalable IP-IP multimedia transcoding and transrating for IMS and WebRTC
Telecommunications is increasingly moving to all–IP service networks. These trends are increasing the variety of audio and video codecs in the network. In addition, the volume of media streams — particularly video media streams in a modern LTE mobile and OTT web service network — continues to grow exponentially.
Mobile, wireless, and broadband network operators increasingly need IP–IP transcoding solutions that deliver economics, scalability, and network simplicity, with superior call quality.
Radisys transcoding features include :
• Audio transcoding across all supported audio codecs
• Audio transcoding with Voice Quality Enhancement (VQE)
• Video transcoding, including transrating and frame rate adaptation, for all supported video codecs.
• Growing support for WebRTC gateways requiring transcoding between WebRTC and SIP codecs
Radisys transcoding features are available on all platforms built on MPX Operating Software, ensuring scalability, flexibility, and economics for any IP network transcoding requirement or application.
Radisys transcoding solutions for IP gateway applications
Transcoding is often found in Session Border Controller (SBC) equipment, but these elements are primarily intended for session security and signaling interworking. In an IMS architecture, the SBC was never intended to provide transcoding, resulting scaling limitations between signalling and media requirements.
Increasingly, network planners are embracing Network Function Virtualization (NFV) and decomposed architectures, where border signaling gateway requirements are independently scalable from the transcoding performed in media gateways. Radisys media processing solutions are the ideal IP-IP multimedia transcoding solution for service providers and gateway vendors.
Radisys transcoding features can be integrated in 3rd Party Call Control (3PCC) architectures using open, standards–based interfaces such as :
• SIP with Media Server Markup Language (MSML — RFC 5707).
• RFC 4117, a SIP–based transcoding control interface for 2–party calls.
Alternatively, Radisys solutions can be deployed ‘inline’ in a Back to Back User Agent (B2BUA) architecture, eliminating the need for 3PCC.
Download our whitepaper “Real-Time Multimedia Transcoding” which discusses the delivery of media conditioning, including transcoding integrated with voice quality enhancements, in IP communication networks with respect to service provider requirements and the impact on network architecture.