[Asterisk-Users] Help: codecs and bandwidth

[Matt Lawson]

In an attempt to reduce bandwidth usage, I tried forcing my Asterisk to 
use Speex.  I did a "disallow=all" then an "allow=speex".  The crazy 
thing is, it didn't reduce the bandwidth usage at all!

I can do an IAX2 show channels and it shows the call being in format 512 
(Speex, right)?

Then I switch iax.conf to only allow ulaw.  I retry the call.  IAX2 
shows the call is in format 4, as expected.

But in both cases, iptraf shows the call is consuming about 170kbps (85 
each way) over the baseline.  How can this be?  How can there be no 
difference between the two?

:-/



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