[Freeswitch-users] Greetings and a couple of questions

[Milena]

Hello!

For ASR menus check this out:
http://wiki.freeswitch.org/wiki/Mod_pocketsphinx
<http://wiki.freeswitch.org/wiki/Mod_pocketsphinx>I wouldn't say it is
perfect but it is nice, on the other hand there is this dialplan tool that
makes fs detect inband dtmf:
http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_start_dtmf

<http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_start_dtmf>hope it
helps.

-Milena

2010/2/17 Doc <ledoktre at meanie.us>

> Once you mentioned the in-band versus out-of-band DTMF, it made sense.
> I've been reading on it since your post, and I'm going to try a few
> things.  Wonder if there is any app for voice controlled IVR (so many
> systems seem to support it these days, it would be a nice way to
> circumvent the DTMF issue... :-) ).
>
> Any ideas on the rest of my points?   -Thanks,
>
> Scott Torr wrote:
> > On Tue, 16 Feb 2010 20:53 -0600, "Doc" <ledoktre at meanie.us> wrote:
> >
> >> 1) I am able to see a call come in, and it gets routed to the sample IVR
> >> to start.  The first thing off is that when I dial from PSTN ->
> >> Skype-In, it does not let me push any buttons.  If I launch a second
> >> skype client, and dial the skype user on FS directly, it works fine.
> >> Any ideas?
> >>
> >
> > Hi Doc,
> >
> > When you dial in from the PSTN the 'push button' events are present as
> > "in band" audio tones.
> > By default the sample IVR only works on "out of band" DTMF events.
> >
> > This is why when you call directly from another skype client the 'push
> > button' events are detected because they are passed as "out of band"
> > signaling.
> >
> >
> > Now,
> > In the dial plan you can tell FS to listen for "in band" audio DTMF
> > tones using <action application="start_dtmf" />
> >
> > However,
> > This currently does not work during a skype call for some reason?
> > http://jira.freeswitch.org/browse/MODSKYPIAX-66
> >
> >
> > A work around,
> > is to sign up for the "Skype SIP Beta" product where the 'push button'
> > events are sent to FS "out of band".
> >
> > This conversion is done at the PSTN --> Skype gateway by dedicated DTMF
> > tone detection hardware.
> >
> >
> > Skype has either made a business decision, or a technical over sight to
> > pass DTMF events 'out of band' for only addition fee products.
> >
> >
> > It has also been reported in New Zealand that even the 'in band' tones
> > where present one day and actually filtered out the next.
> > This seems extreme, but either through deliberate action or a technology
> > change this is what was reported on one blog.
> >
> > It is unclear to me if this was a technical limitation or a blunt
> > business decisions, but a audio sample showed the audio tones missing?
> >
> >
> > In any case you would not want to rely on 'In band' DTMF' tones when
> > passed through 'lossy' codecs anyway.
> >
> > Best to stick with 'out of band' signaling for reliability.
> >
> >
> > regards,
> > Scott Torr
> >
> >
> >
> >
> >
> >
> >
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