This command just lists all codecs available in asterisk, not specifically reflecting your configuration. It does not show the codecs according to preferences or availability in a specific channel.
Which codecs you use for each channel is configured in channel configuration files. Also, see the show translation cli command, that calculates the time of conversion between the codecs that are installed on the system it is running on.
- Asterisk config files: Config files, including channel configuration files
- Asterisk channels: Information on Asterisk channels, i.e. SIP, IAX, MGCP etc
- Asterisk CLI: Asterisk Command line interface
asterisk -rx “core show codecs”
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 g726aal2 (G.726 AAL2)
- 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)
- 2048 (1 << 11) (0x800) audio g726 (G.726 RFC3551)
- 4096 (1 << 12) (0x1000) audio g722 (G722)
- 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)
- 2097152 (1 << 21) (0x200000) video h264 (H.264 Video)
July 26, 2017
Phone System 