Supported Codecs
The ISR supports the following transmission codecs:
- g.711 mulaw
- g.711 alaw
- g.729
- g.722 and g.722.2 (excluding g.722.1)
- H.264
- AMR-WB
The audio transmission codecs can be mapped to the following recording formats:
| Header Raw | Header WAVE | Format | Bit Rate | Sample Rate (KHz) | Channels Mono | Channels Stereo |
|---|---|---|---|---|---|---|
| YES | YES | ulaw | 8 | 8 | YES | YES |
| YES | YES | alaw | 8 | 8 | YES | YES |
| YES | YES | Linear PCM | 8 | 8 | YES | YES |
| NO | YES | Linear PCM | 16 | 8 | YES | YES |
| NO | YES | Linear PCM | 16 | 1 | YES | NO |
| NO | YES | Linear PCM | 16 | 16 | NO | YES |
| NO | YES | ADPCM | 4 | 8 | YES | YES |
H.264 video content is stored and replayed in MP4 format.
