Sonus Networks (www.sonusnetworks.com) “supports” HD voice, but what exactly does that mean? In a discussion with HD Voice News, the company has three distinct steps to supporting HD voice, including selecting codec preferences and policies, conducting transcoding within its gear, and ultimately adding more testing tools for HD.
Today, the company’s SBCs – MBS9000 and NBS 5200 – and its PSX centralized routing server can manage codec policies and routing across a VoIP-based network. Sonus says some customers want to keep their entire network transcoder-free at this point in time, favoring G.711 rather than using G.722 or other wideband codecs. Other service providers want to be able to support and/or route specific codec types from point A to point B without having to transcoding until it comes out of the end of the network.
Some time by the end of the year, Sonus plans to implement HD voice transcoding within its SBCs as a software upgrade, utilizing the “headroom” on its CPUs and DSPs to transcode between G.722 to AMR-WB and to move between wideband codecs and all the legacy codecs out there.
The final part of the puzzle will be rolling HD voice testing capabilities into its NetAssure testing product. Adding in HD support will take more effort and will happen “a little later.”