[Freeswitch-users] Freetdm DTMF

Thu May 10 07:39:00 MSD 2012

Happy for you to laugh at yourself, I'm just happy you are finding some
time to take some interest in my problem.  Much appreciated.

I think some clarity is required here.  I am simply trying to do an
attended transfer as per the wiki (except I set the bind_meta_app to both
legs)
http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_att_xfer

It works  fine for SIP to SIP.  For SIP to Freetdm it only works if the SIP
is trying to do the transfer.  If the FreeTDM is trying to do it ie. push
*3 on the phone keypad, then the bind_meta_app works fine and detects the
*3 and executes the appropriate extension ie. att_xfer, however the read()
in the extension att_xfer does not see the subsequent DTMF pressed on the
phone ie. the destination extension number.

Cheers
Shane

On Thu, May 10, 2012 at 2:44 PM, curriegrad2004 <curriegrad2004 at gmail.com>wrote:

> I just had to laugh at my self for mixing up the 2 again...
> bind_meta_app is only applicable to that extension that the inbound
> call was made to. Since you've transferred to another extension, the
> bind_meta_app won't work anymore because it's not defined in the
> extension you're transferring to.
>
> If you want this to happen, you'd have to manually define that
> bind_meta_app to those target extensions too. Remember, do this at
> your own peril - obvious misuse of bind_meta_app can open a huge
> security hole if you don't know what you're doing :)
>
> On Wed, May 9, 2012 at 7:27 PM, Shane Harrison
> <shane.harrison at paragon.co.nz> wrote:
> > Thanks for the thoughts.  As I said, I am already setting it to both
> legs -
> > I will try simply trying one leg but am sceptical :-)
> >
> > I also mentioned that I called the start_dtmf just before calling the
> read
> > so unless I am doing something wrong here.....  I'll try and post the XML
> > tonight when I get home.  Oh and it is an FXS card not an FXO of course
> > since it has a phone plugged into it.
> >
> > The question still remains though, why is the in-band DTMF detection
> working
> > for the bind_meta_app digit detection but not after that?
> >
> > Cheers
> > Shane
> >
> >
> > On Thu, May 10, 2012 at 12:28 PM, curriegrad2004 <
> curriegrad2004 at gmail.com>
> > wrote:
> >>
> >> and crap, since I wasn't even reading anything here, on the subsequent
> >> transfers from your FXO card, enable the in-band DTMF detector that FS
> >> has. The details on the in-band DTMF detector is here:
> >>
> >> http://wiki.freeswitch.org/wiki/Misc._Dialplan_Tools_start_dtmf
> >>
> >> But use this with caution, if there is a DTMF detector on the FXO card
> >> itself, make sure you disable it before using it.
> >>
> >> On Wed, May 9, 2012 at 5:26 PM, curriegrad2004 <
> curriegrad2004 at gmail.com>
> >> wrote:
> >> > apologies for telling you the wrong thing. I was replying you from my
> >> > phone btw :P
> >> >
> >> > Yeah, bind_meta_app is the app you would use, but try changing it to
> >> > point to the b-leg, not the a-leg
> >> >
> >> > On Wed, May 9, 2012 at 4:12 PM, Shane Harrison
> >> > <shane.harrison at paragon.co.nz> wrote:
> >> >> Thanks.  I am currently using bind_meta_app (set to both legs)
> already
> >> >> rather than bind_digits.  I'll give bind_digits a shot and see if it
> >> >> behaves
> >> >> differently.
> >> >>
> >> >> Note that I do detect the initial *3 digits and because bind_meta_app
> >> >> is
> >> >> both legs, this is successful no matter which direction the call is
> >> >> setup
> >> >> from.  However once the dialplan moves to the extension the *3 is
> bound
> >> >> to,
> >> >> digits are no longer received.
> >> >>
> >> >> The worrying thing for me is that ftdm_io.c doesn't even write to the
> >> >> log
> >> >> that it has received them (nor freetdm above that of course which is
> >> >> understandable) and I am surprised that the read() influences that
> >> >> since it
> >> >> works prior on the *3 digits.
> >> >>
> >> >> Cheers
> >> >> Shane
> >> >>
> >> >>
> >> >>
> >> >> On Thu, May 10, 2012 at 10:22 AM, curriegrad2004
> >> >> <curriegrad2004 at gmail.com>
> >> >> wrote:
> >> >>>
> >> >>> I'm guessing the bind digits in your analog card was set to listen
> for
> >> >>> this sequence on the a-leg given if the call was being routed from
> the
> >> >>> IP side to the analog side.
> >> >>>
> >> >>> Try changing that to listen on the b-leg.
> >> >>>
> >> >>> On 5/9/12, Shane Harrison <shane at longwhitecloud.com> wrote:
> >> >>> > Hi All,
> >> >>> >
> >> >>> > Have a situation where I have a call between a SIP phone and a
> >> >>> > FreeTDM
> >> >>> > channel.   Pushing *3 on the analog FreeTDM phone is detected and
> >> >>> > this
> >> >>> > is
> >> >>> > bound to a dialplan extension (attended transfer) that does a
> >> >>> > read():
> >> >>> > <action application="read" data="3 3
> >> >>> > 'tone_stream://%(10000,0,350,440)'
> >> >>> > digits 30000 #"/>
> >> >>> >
> >> >>> > However pushing further digits on the analog phone ie. extension
> >> >>> > number
> >> >>> > of
> >> >>> > phone we wish to do an attended transfer to , doesn't result in
> the
> >> >>> > DTMF
> >> >>> > being detected.  Note that this all works the other way around ie.
> >> >>> > using
> >> >>> > the SIP phone.
> >> >>> >
> >> >>> > When the *3 digits are pushed on the analog phone I see the logs
> >> >>> > report:
> >> >>> >
> >> >>> >  ftdm_io.c:3463 [s2c1][1:4] Queuing DTMF * (debug = 0)
> >> >>> > mod_freetdm.c:702 Queuing DTMF [*] in channel FreeTDM/2:1/
> >> >>> >
> >> >>> > ftdm_io.c:3463 [s2c1][1:4] Queuing DTMF 4 (debug = 0)
> >> >>> >
> >> >>> > mod_freetdm.c:702 Queuing DTMF [4] in channel FreeTDM/2:1/
> >> >>> >
> >> >>> > When the further keys are pushed ftdm_io reports nothing.
> >> >>> >
> >> >>> > I have tried inserting a start_dtmf before the read() but it had
> no
> >> >>> > effect.
> >> >>> > Any thoughts as to why DTMF isn't being seen from the analog phone
> >> >>> > after
> >> >>> > the read()?
> >> >>> >
> >> >>> > Cheers
> >> >>> > Shane
> >> >>> >
> >> >>>
> >> >>>
> >> >>>
> _________________________________________________________________________
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> > --
> > Paragon Electronic Design Ltd
> > L6 Crest House
> > 92 Queens Drive
> > P0 Box 30449
> > Lower Hutt 5040
> >
> > +64 4 5703870 Extn 875
> > +64 21 608919  (mobile)
> >
> > "Solving your problems with the right technology"
> >
> > _________________________________________________________________________
> > Professional FreeSWITCH Consulting Services:
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> > http://www.freeswitchsolutions.com
> >
> > 
> > 
> >
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-- 
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L6 Crest House
92 Queens Drive
P0 Box 30449
Lower Hutt 5040

+64 4 5703870 Extn 875
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"Solving your problems with the right technology"
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