On 26/08/2012 3:45 AM, Markus wrote:
Hi list, I'm resending this.. no one answered. No one got an idea? Thank
you!


When I receive an incoming call from a SIP peer where I've configured

disallow=all
allow=alaw
(and no other codec)

I can see the following NOTICE on the console:

Dropping incompatible voice frame SIP/peer07-0000007c of format ulaw
since our native format has changed to (alaw)

My question is: where can I change the native format from ulaw to alaw
(or something else)? Is ulaw, as the native format, adjustable in some
config file or is it hard-coded into Asterisk?

It doesn't seem to have any effect on the voice quality but the messages
on the console are quite annoying.


I suspect you will find the frequency of these messages is the value you have set for rtpkeepalive.

I would suggest you include the following in your peer's configuration;

rtpkeepalive=0

Larry.

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