g723 gsm ulaw alaw g726 adpcm slin lpc10 g729 speex ilbc g723 - - - - - - - - - - - gsm - - 2 2 4 2 1 6 22 - 28 ulaw - 5 - 1 4 2 1 6 22 - 28 alaw - 5 1 - 4 2 1 6 22 - 28 g726 - 7 4 4 - 4 3 8 24 - 30 adpcm - 5 2 2 4 - 1 6 22 - 28 slin - 4 1 1 3 1 - 5 21 - 27 lpc10 - 8 5 5 7 5 4 - 25 - 31 g729 - 8 5 5 7 5 4 9 - - 31 speex - - - - - - - - - - - ilbc - 9 6 6 8 6 5 10 26 - - linux*CLI> show codecs Disclaimer: this command is for informational purposes only. It does not indicate anything about your configuration. INT BINARY HEX TYPE NAME DESC -------------------------------------------------------------------------------- 1 (1 << 0) (0x1) audio g723 (G.723.1) 2 (1 << 1) (0x2) audio gsm (GSM) 4 (1 << 2) (0x4) audio ulaw (G.711 u-law) 8 (1 << 3) (0x8) audio alaw (G.711 A-law) 16 (1 << 4) (0x10) audio g726 (G.726) 32 (1 << 5) (0x20) audio adpcm (ADPCM) 64 (1 << 6) (0x40) audio slin (16 bit Signed Linear PCM) 128 (1 << 7) (0x80) audio lpc10 (LPC10) 256 (1 << 8) (0x100) audio g729 (G.729A) 512 (1 << 9) (0x200) audio speex (SpeeX) 1024 (1 << 10) (0x400) audio ilbc (iLBC) 65536 (1 << 16) (0x10000) image jpeg (JPEG image) 131072 (1 << 17) (0x20000) image png (PNG image) 262144 (1 << 18) (0x40000) video h261 (H.261 Video) 524288 (1 << 19) (0x80000) video h263 (H.263 Video) 1048576 (1 << 20) (0x100000) video h263p (H.263+ Video)