[asterisk-users] Migrating asterisk 11 to 13: some callers get no ringback tone any more

[Joshua Colp]

Michael Maier wrote:

<snip>

>
> And:
> The ringback tone wasn't missing, if the second number (the second
> trunk) of the asterisk installation was used!
>
> The only difference between those two trunks is: The first trunk is
> configured to a ring group - the second trunk is configured directly to
> an extension.
>
>
>
> My solution after long time of digging around:
> I added progressinband=never to sip_general_additional.conf
>
> But this solution confuses me, because
>
> http://www.voip-info.org/wiki/view/Asterisk+sip+progressinband
>
> tells:
>
> progressinband=never
>
> Whenever ringing occurs, send "180 ringing" as long as "200 OK" has not
> yet been sent. This is the default behaviour of Asterisk.
> 			   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
>
> Why do I have to provide it especially if it is the default behavior?
> Why did it work without this option with asterisk 11? Why is there
> suddenly a difference in behavior between binding a trunk to a ring
> group or an extension?

I'm not really sure what would be different, as that would be a FreePBX 
construct and not of Asterisk itself. If you provide a SIP debug of the 
non-working case I can see if anything is out of the ordinary in the 
signaling.

-- 
Joshua Colp
Digium, Inc. | Senior Software Developer
445 Jan Davis Drive NW - Huntsville, AL 35806 - US
Check us out at: www.digium.com & www.asterisk.org