QUESTION Setting-up IAX to use high bandwidth

[Chris Gicale]

Good day,

I'd like to setup my IAX2 trunk between two PABX to use high bandwidth, since I'm running a point-to-point link.
Is configuring bandwidth=high will address my need? Where I can possibly enter that command?

Appreciate any response.

Regards,
Chris

 

[dicko]

I don't that pertains anymore it was for IAX not IAX2 , yes set it up a trunk, but just use whatever codecs you want over it that are supported end to end.

 

[atsak]

I'm curious why you'd want or need to do that?

 

[Chris Gicale]

I just want to ensure that VoIP calls has very good quality. Thanks.

 

[atsak]

I just want to ensure that VoIP calls has very good quality. Thanks.

Choose the g722 or g711 codec for that then, the iax2 settings won't affect quality.

 

[Chris Gicale]

I believe g711 is the ulaw/alaw? And is configured by default?
If I'm wrong can you please guide me. Thanks.

 

[dicko]

With overhead and using iax2 on a trunked connection, you should expect about 75kb/s per channel. G711 of any flavor is fixed width and always 64kb/s

 

[Chris Gicale]

Will you able to give me idea what to research in able to accomplish such, ensuring 75kb/s per channel. Thanks @dicko .

 

[atsak]

You don't need to do anything. Just set the codec as g722 (best quality) on both ends as allowed then preferred and the phones/endpoints and you should get the desired outcome; test of course. To be 100% sure you can disallow ulaw and alaw on the IAX2 trunk setting to make sure it's working.

 

[Chris Gicale]

Thanks guys. I love to play with VoIP, however I have no broad understanding on it. Thanks @atsak .