asterisk users - Feb 2014 - G729 - what happens if licences used up?

I haven't been able to find the answer online, and am not currently
able to conduct an experiment to find the answer...

I understand that in a SIP call where G729 has been negotiated as the
preferred codec, a G.729 licence is not consumed until there is a need
to perform transcoding, e.g. play a non-g729 sound, or do voicemail,
or enter a Meetme, etc.

What happens when a SIP call in progress needs a G.729 licence and
they are all in use already? Does the call fail, or go silent, or do a
re-INVITE to negotiate another codec?

I'm interested in what happens on Asterisk 1.2 (for a legacy system),
and also whether it is any different on later versions.

Thanks,
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

On Thu, Feb 20, 2014 at 10:40 AM, Tony Mountifield <tony at softins.co.uk>
wrote:
> I haven't been able to find the answer online, and am not currently
> able to conduct an experiment to find the answer...
>
> I understand that in a SIP call where G729 has been negotiated as the
> preferred codec, a G.729 licence is not consumed until there is a need
> to perform transcoding, e.g. play a non-g729 sound, or do voicemail,
> or enter a Meetme, etc.
>
> What happens when a SIP call in progress needs a G.729 licence and
> they are all in use already? Does the call fail, or go silent, or do a
> re-INVITE to negotiate another codec?
>
> I'm interested in what happens on Asterisk 1.2 (for a legacy system),
> and also whether it is any different on later versions.
>
The question depends if you are offering up other codecs or not.  If
you only using g729, the call will fail to establish because lack of
codecs.  If you offer a both g729 and ulaw, then ulaw will be used.

-- 
Paul Belanger | PolyBeacon, Inc.
Jabber: paul.belanger at polybeacon.com | IRC: pabelanger (Freenode)
Github: https://github.com/pabelanger | Twitter: https://twitter.com/pabelanger

In my experience when you run out of g729 licenses additional calls will fail.  
Simple as that.   Make sure you run out of licenses.

-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces
at lists.digium.com] On Behalf Of Tony Mountifield
Sent: Thursday, February 20, 2014 10:40 AM
To: asterisk-users at lists.digium.com
Subject: [asterisk-users] G729 - what happens if licences used up?

I haven't been able to find the answer online, and am not currently able to
conduct an experiment to find the answer...

I understand that in a SIP call where G729 has been negotiated as the preferred
codec, a G.729 licence is not consumed until there is a need to perform
transcoding, e.g. play a non-g729 sound, or do voicemail, or enter a Meetme,
etc.

What happens when a SIP call in progress needs a G.729 licence and they are all
in use already? Does the call fail, or go silent, or do a re-INVITE to negotiate
another codec?

I'm interested in what happens on Asterisk 1.2 (for a legacy system), and
also whether it is any different on later versions.

Thanks,
Tony
--
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

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