[Freeswitch-users] bind_meta_app and bind_digit_action with inband DTMF?

[Michael Collins]

FYI,

I just tested bind_digit_action with inband dtmf and it works splendidly. I
recommend using bind_digit_action. Also, in case you didn't see it, Brian
West added a magic extension that looks for the presence of
"telephone-event" in the SDP and then turns on inband dtmf detection if the
rtpmap is missing. Look in conf/dialplan/default.xml for the "global"
extension. The lines that do the auto dtmf thing are commented out by
default. I just uncommented them and tested with Eyebeam configured for
inband dtmf. (It also works when Eyebeam is set for 2833...)

Also, on the FS conf call today the community did a tag-team effort to test
and document the bind_digit_action app. It has a lot more information than
it did previously:

http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_bind_digit_action

Hope this helps.
-MC

On Wed, Dec 22, 2010 at 8:01 AM, Dmitry Sytchev <kbdfck at gmail.com> wrote:

> Hi! We are trying to migrate our Asterisk system to Freeswitch, and
> faced with some trouble:
>
> We use inband at user side, and want Freeswitch to regenerate it to
> RFC2833 before sending to media gateway.
>
> When user endpoints use rfc2833 bind_meta_app and bind_digit_action
> work as expected, but not with start_dtmf (as needed to parse inband
> DTMF). We can't use rfc2833 DTMF on user endpoints as there seems to
> be a problem in freeswitch or our media gateway leading to audible
> DTMF duplicates.
>
> When user endpoints are set to inband, I see messages on console about
> DTMF detection:
>
> 2010-12-22 18:50:30.802253 [DEBUG] switch_ivr_async.c:2089 DTMF DETECTED:
> [*]
> 2010-12-22 18:50:30.803253 [DEBUG] switch_rtp.c:1985 Send start packet
> for [*] ts=503795131 dur=160/160/2000 seq=43701
> 2010-12-22 18:50:30.823282 [DEBUG] switch_rtp.c:1921 Send middle
> packet for [*] ts=503795131 dur=320/320/2000 seq=43702
> ...skip...
> 2010-12-22 18:50:30.923393 [DEBUG] switch_rtp.c:1921 Send middle
> packet for [*] ts=503795131 dur=1920/1920/2000 seq=43712
> 2010-12-22 18:50:30.923393 [DEBUG] switch_rtp.c:1921 Send end packet
> for [*] ts=503795131 dur=2080/2080/2000 seq=43713
> ...skip...
> 2010-12-22 18:50:31.242695 [DEBUG] switch_ivr_async.c:2089 DTMF DETECTED:
> [1]
> 2010-12-22 18:50:31.242695 [DEBUG] switch_rtp.c:1985 Send start packet
> for [1] ts=503798651 dur=160/160/2000 seq=43732
>
> So digits are received but no in-call action launched by
> bind_meta_app. I tried start_dtmf before and after bind_meta_app but
> with no success. Is there a way to make inband dtmf launch in-call
> actions while transcoding it to RFC2833 on trunk side?
> I can't make inband dtmf trigger my actions :(
>
> --
> Best regards,
>
> Dmitry Sytchev,
> IT Engineer
>
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