G.722 for SIP endpoints is now supported
G.722 is used in many SIP phones for HD voice support
G.722 is used in many SIP phones for HD voice support
Your mp3 or ogg files played on VoxEngine scenario level with call.startPlayback or using Player will be played on the Web or Mobile SDK side in HD quality (48KHz), or on SIP side if it does support wideband audio codecs (Speex or Opus).