[asterisk-users] Some queries on g729 license.

[Matthew Rubenstein]

	Thank you, that is excellent advice.

	I understand that Intel has a free g729 codec, and that there might be
others. Free g729 codecs cheat Digium of some income that helps keep
them producing free Asterisk (and hosting lists like this one), but what
other reasons (quality, performance, missing features) would make the
Digium (or other $) license worth paying for?


On Mon, 2007-01-08 at 14:40 +0000, Thomas Kenyon wrote:
> Matthew Rubenstein wrote:
> > 	I connect to a PSTN carrier over SIP which requires me to connect with
> > a g729 codec. I'm using them for just robocalling: Asterisk server
> > originates calls which play a prerecorded file. Can I pre-encode those
> > stored files in g729 so they don't need to be encoded for each call?
> 
> Yes, if you are using asterisk 1.4 then in the CLI you can type:
> 
> convert 
> <filename-including-path-if-not-in-asterisk-sounds-folder>.<original 
> extension> <filename-including-path-if-not-in-asterisk-sounds-folder>.g729
> 
> so convert recording.ulaw recording.g729
> 
> Will make a permanent copy not requireing transcoding again.
> 
> If you are using asterisk 1.2, there is a tool on the asteriskguru site 
> to transcode the file for you.
> 
> http://www.asteriskguru.com/tools/audio_conversion.php
> 
> > If
> > so, do I need a g729 license for each call, or just a license for the
> > preencoder?
> 
> You will need a license for when the file is encoded, after that if it 
> is played back on a g729 call you will not need a license. Asterisk will 
> automatically choose the lowest cost file to playback (which one in 
> natvie format will be).
> 
>  > If the robocalls accept incoming DTMF, do I need g729
> > licenses for those calls?
> > 
> 
> You only need a license when you are transcoding, if you have an 
> incoming call that is g729 and you terminate the call to a device that 
> is configured to use g729 then you will not need a license.
> 
> If you are recording the call then you will need (possibly 2) llicenses.
> 
> DTMF signals do not require a license (although the device generating 
> them needs to be configured to use RFC 2833 or Out of Band for DMTF 
> encoding).
-- 

(C) Matthew Rubenstein