The following codecs are currently supported for VoIP communication:

Audio

  • G.723.1
  • GSM
  • G.711 u-law
  • G.711 A-law
  • G.726 AALw
  • ADPCM
  • 16 bit Signed Linear PCM
  • LPC10
  • G.729A
  • Speex
  • iLBC
  • G.726 RFC3551
  • G.722
  • ITU G.722.1
  • ITU G.722.1 Annex C
  • 16 bit Signed Linear PCM (16kHz)
  • ITU G.719
  • SpeeX 16khz
  • G.711 test-law

Image

  • JPEG image
  • PNG image

Video

  • H.261 Video
  • H.263 Video
  • H.263+ Video
  • H.264 Video
  • MPEG4 Video