Transcoding

IP networks use a wide variety of methods for managing and routing VoIP and multimedia sessions, creating interworking challenges at network borders. GENBAND, a pioneer in session border control and IP media adaptation, provides scalable, carrier class transcoding solutions to ensure high quality, highly interoperable communications between IP network borders.



Fixed and mobile access networks are often bandwidth-constrained, driving the use of different codecs to optimize bandwidth efficiency. Traditional approaches for addressing these IP-to-IP border incompatibilities include the use of media gateways as an intermediary step to transcode each IP session to and from a common media format, typically TDM. However, this can yield voice quality impairments by adding delay, loss and processing artifacts. By enabling the interworking of codecs through transcoding, VoIP traffic avoids unnecessary IP to TDM conversions and remains in the packet realm, improving voice quality and reducing costs.

Purpose-built for media handling, GENBAND's G9 Converged Gateway is highly scalable for any transcoding need. The G9 has powerful, state-of-the-art DSP resources that make it an efficient transcoding media resource processor/MRFP.  It supports high-complexity mobile codecs like AMR and EVRC, as well as fixed network codecs like G.711, G.723 and G.729.  Additionally, it supports the satellite codec AMBE+2. The G9 also provides a variety of voice quality enhancement features for packet-to-packet network applications when transcoding is not required. 

GENBAND’s C3 Gateway Controller or S3 and S9 Session Border Controllers work in conjunction with the G9 platform to provide the Media Resource Function Control (MRFC).  A significant advancement over integrated media servers, this Transcoding solution physically separates control elements from the media processing elements so that transcoding resources can be efficiently sized and scaled according to network needs.