gue wrote:
what is passthru?
assume that the ata connected to your asterisk box uses 729 and that the voip provider on the other end of your server uses 729. they can then "passthru" their media streams via the asterisk box without requiring it do any translation. the server is just a pass thru device.
but supposed your server has to play a message for the ata example voicemail or prompts then the server will no longer be a passthru device. in this case you will need the 729 codec to accomplish this translation.
on the subject of cost for the licence. it is $10 per channel. so if u have 5 licences then you are limited to 5 simultaneous 729 conversations. it is not $10 for your entire box.
hope this helps
I see, I had some trouble making calls, I always get the busy tone. I want to use this for my calling card application in A2Billing. I paid for the G729 codec from Digium but haven't received it from them yet. I hope it works after I install it.