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No sound when calling from a DID
http://forum.asterisk2billing.org/viewtopic.php?f=22&t=6540		 Page 1 of 1
Author:  ivanosito [ Mon Nov 09, 2009 4:07 am ]
Post subject:  No sound when calling from a DID
Hi, a2billing friends!

This is the scenario:

I call in Canada to a local number 1647... (I bought this number from DIDWW.com).
It is a number which is routed to my Asterisk (TRIXBOX 2.8.0.1) server.
Asterisk answers the call, recognizes the DID.
The inbound route takes it to an IVR, where I select an option.
That option takes me to a2billing.
I give the PIN, I dial the number, and it rings,... someone answers.
I, in Canada, originating the call, hear the person who answers.
That person doesn't hear me.

I know it can be some NAT issue, but just wanted to know if there's some sort of limitation in a2billing regarding the source of the call.
The usual origin of the call is a PSTN trunk, so I thought maybe it cannot work with other origins.

If not, I may need to sweat a bit more dealing with NATs and routers :).

Thanks indeed!
Author:  LemensTS [ Wed Nov 11, 2009 7:18 pm ]
Post subject:  Re: No sound when calling from a DID
You need to start from the least complicated setup, and work your way up.
Try to call in to the did in freepbx like you were, and have it send it to a sip phone in freepbx that is setup. do you got 2 way audio like that?
Author:  ivanosito [ Fri Nov 27, 2009 9:15 am ]
Post subject:  Re: No sound when calling from a DID
Hi! Thanks for your concern. I found a solution but forgot to write it here.

When calls failed, the Asterisk CLI told me it was trying to make some "sip bridge". When calls went right no "sip bridge" were tried.

Making some google on "sip bridge" a solution appeared: in the Trunks associated with the DID, add these:
canreinvite=no
nat=yes

It is working now. Thank God... and Google! he he
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