Audio Codec Configuration
The device supports seven types of Codec (iLBC_13_3, iLBC_15_2, L16, PCMU, PCMA, G729, and G722) for encoding and decoding the audio data during the call session. Each type of Codec varies in terms of sound quality. You can select the specific codec with different bandwidths and sample rates flexibly according to the actual network environment.
To do the configuration on web Account > Advanced > Audio Codecs interface.
Please refer to the bandwidth consumption and sample rate for the codecs types below:
| Codec Type | Bandwidth Consumption | Sample Rate |
|---|---|---|
| PCMA | 64 kbit/s | 8kHZ |
| PCMU | 64 kbit/s | 8kHZ |
| G729 | 8 kbit/s | 8kHZ |
| G722 | 64 kbit/s | 16kHZ |
| iLBC_13_3 | 8,16 kbit/s | 13.3kHZ |
| iLBC_15_2 | 8,16 kbit/s | 15.2kHZ |
| L16 | 128 kbit/s | variable |
Video Codec Configuration
C315 series supports VP8, H263, H264, H265 codec that provides a better video quality at a much lower bit rate with different video quality and payload. To do the configuration on web Account > Advanced > Video Codecs interface. Choose an available video codec and set up the codec parameters.
Parameter Set-up:
- Codec Resolution: select the codec resolution for the video quality among five options: QCIF, CIF, VGA, 4CIF and 720P according to your actual network environment. H263 only has QCIF, CIF, 4CIF.
- Codec Bitrate: select the video stream bit rate (ranging from 128-512). The greater the bitrate, the data transmitted every second is greater in amount. Therefore, the video will be clearer.
- Payload: select the payload type (ranging from 90-119) to configure the audio/video configuration file. The default payload is 104.