[asterisk-app-dev] ARI Channel-Exec Suggestion

[Matthew Jordan]

On Fri, Mar 7, 2014 at 8:59 AM, Paul Belanger
<paul.belanger at polybeacon.com>wrote:

> On Fri, Mar 7, 2014 at 8:09 AM, Ben Merrills
> <b.merrills at mersontech.co.uk> wrote:
> > Can I pick back up on this then, and ask if there are any plans to
> incorporate speech into ARI?
> >
> > We're using unimrcp at the moment for both ASR and TTS, and would love
> to be able to access that functionality from ARI too.
> >
> > In terms of TTS, a short cut might be to include URIs in the audio
> schema for Play(). This would allow you to easily integrate 3rd party TTS
> engines that export wav/mp3 etc via a URI. Just a thought :)
> >
> I'll be actually going down this path sooner then later. Some of our
> clients have been asking for this functionality and I've been checking
> out unimrcp too. Like you I'm trying to best figure out how to
> interface ARI with TTS / ARS.  I'd be interested to see how others are
> doing this and see if we could get some sort of spec going.
>
>
Prefacing this with IANAL...

With regards to the unimrcp library in particular: The unimrcp library is
licensed under the Apache license 2.0 [1]. This license is not compatible
with the GPLv2 [2]. Linking to the unimrcp library would - as best as I can
tell - violate the GPLv2 license due to the patent termination and
indemnification provisions. Merely licensing an Asterisk module that uses
said library as GPLv2 does not prevent the linkage from that module to said
library from creating a derivative work - so releasing said modules as
GPLv2 does not, as best as I can tell [3], remove the licensing issues.
Based on this, using said modules in Asterisk is a violation of the GPL.

More generally, yes, I would be interested in exposing Asterisk's generic
speech recognition API through ARI. The first step on that would be to
propose the API on this mailing list - preferably, a wiki page should be
made on the Asterisk wiki here [4] as well.

Matt

[1] http://www.apache.org/licenses/LICENSE-2.0
[2] http://www.apache.org/licenses/GPL-compatibility.html
[3]
http://www.unimrcp.org/announcements/unimrcppackageforasterisk100released
[4] https://wiki.asterisk.org/wiki/display/AST/Asterisk+13+Projects

-- 
Matthew Jordan
Digium, Inc. | Engineering Manager
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at: http://digium.com & http://asterisk.org
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