Hi List,

Ok, so I have a portable node and it works great at home but on the road using my iPhone hotspot with Verizon it's quite jittery and doesn't sound very good, even when I have 2 or 3 bars. I can connect to the same node using echolink and it works fine even with 1 to 2 bars.

I'm using the hamvoip image without any codec changes and I notice it connects to our local repeater hamvoip node with g726aal2 which makes sense because g726aal2 is first in [general] which I believe controls outbound connections.

So I wanted to see what I sounded like so I connected to 40894 so I could hear my own voice. It connected using ulaw for some reason. The only way I could get it to change was to comment out the codecs I didn't want to use in [general]. Apparently it doesn't negotiate how I think it does.

On ulaw and g726aal2 it sounded pretty terrible. gsm was better but it was still broken up. I wanted to try ilbc but codec negotiation failed which I'm sure means that 40894 doesn't allow ilbc.

I then connected successfully to our local repeater node with ilbc and it sounded just fine, even with one bar, but I need to test more...

Is this anyone else's experience with using hotspots?

I've modified the codec under [genera] to the below, which the way I understand is for outgoing connections. And the codec order is the order of attempted negotiation. I ordered them on my portable node in order of least bandwidth to greatest.

So with that said, when I connect to my local node, which allows ilbc, why does it negotiate to g726aal2?

And how can I setup iax.conf so it always connects using the lowest bandwidth codec that the other side allows?

allow=ilbc

allow=gsm

allow=g726aal2

allow=ulaw

73,

Will, KE4IAJ