IAX Settings
The IAX configurations require professional knowledge of IAX protocol, incorrect configuration may cause calling issues on the IAX extensions and IAX trunks.
IAX General Settings
| Option | Description |
|---|---|
| UDP Port | IAX registration port. |
| Bandwidth | Control which codecs to be used based on bandwidth. |
| Maximum Registration/Subscription Time | Maximum duration (in seconds) of an IAX registration. |
| Minimum Registration/Subscription Time | Minimum duration (in seconds) of an IAX registration. |
IAX Codec
A codec is a compression or decompression algorithm that used in the transmission of voice packets over a network or the Internet.
Yeastar S-Series VoIP PBX supports G711 a-law, u-law, GSM, H261, H263, H263P, H264, SPEEX, G722, G726, ADPCM, G729A, MPEG4 and iLBC.
Note:
- You need to choose at least one same code on the PBX and on your phones, or there may be a problem of the call.
- If you want to make video calls, you need to select H261, H263, H263P, H264 or MPEG4 codec on the PBX and on your phones.