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