[App_rpt-users] Codecs

[Benjamin L. Naber]

While reading an email from another VoIP email reflector, I got to 
thinking about some of the codecs we use.

Perusing through the iax.conf through a few allstar network linking 
distros, each seem to have their own preferred set of codecs.

I'm rather disturbed that iLBC and speex remains in any of them, while 
I'm sure for compatibility of older installations. However, low quality 
bandwidth codes sounds no better than echo-stink. This is one of the 
reason why we use Allstarlink, for better audio quality, is it not?

As I connect to different allstar nodes throughout the world, more-so in 
the US, some are using iLBC or gsm... and a majority are hub nodes. This 
to me, is unacceptable, and appears the codec being used are whatever 
the allstar box has been packaged with.

So, given than I'm not a Steve Henke or Steve Zingman, but I want to 
ensure that I'm doing my part to achieve high fidelity through g711 
codec and proper URI <-> radio hardware interfacing techniques.

Which stanza in the iax.conf is for out-going connections?

I was under the impression [radio-proxy] was, however, when a node with:
disallow=all
allow=ulaw
allow=g726aal2
allow=gsm

connects to my node which has the *same* key=value pairs under [radio] 
stanza, I got the message something along the lines of:

connected: IP
codes available: g726aal2/gsm
host codecs available: ulaw|g726aal2|gsm|ilbc
actual codec: g726aal
...

bost sides do not have ilbc *anywhere*. The codec has been 
removed/deleted. Why does it still show up?

What is the ultimate deciding factor of which codec is used if both side 
have codecpriority=mine?

~Benjamin, KB9LFZ