asterisk users - Aug 2003 - DTMF modes and external IVR systems over ISDN

Hello,

I'm trying to understand why when I make a call from a SIP phone to an
external number who has an IVR system in which I've to choose some options
using the dialpad, it does'nt recognise the key pressed and remains still
waiting for my choose.

I'm tryng using Grandstream 102, and i've tryed with all the 3 modes
possibile:

Dtmf inband, rfc2833 and INFO (obviously configuring'em also in sip.conf).

I think that's a problem of the ISDN line (used with I4L modem drivers),
that does'nt pass the DTMF to the end point of the call.

Is there some thing i can do on the conf files or I have to search the
answer into the source tree?

I googlized a bit and found some patch to isdn_tty (that should solve the
problem of receiving dtmf from isdn line when calling with a person), but
unfortunately, the kernel version is different and also correcting a bit the
patch, it doesn't work for me - i still get errors with patch.

Nothing found for the contrary use: sending dtmf over the isdn to make
possibile a choice into an external ivr or menu system.

Any link/patch/suggestion?

Without it, my * box will be soon cut off by my boss (i need to set-up our
pbx ASAP - prior to holidays... :( )

-- 
Stefano Finetti

I would suggest you try and get hold of an AVM fritz (I got one for ?4 off Ebay)
card and then use chan_capi..

Later..
> 
> Hello,
> 
> I'm trying to understand why when I make a call from a SIP phone to an
> external number who has an IVR system in which I've to choose some
options
> using the dialpad, it does'nt recognise the key pressed and remains
still
> waiting for my choose.
> 
> I'm tryng using Grandstream 102, and i've tryed with all the 3
modes
> possibile:
> 
> Dtmf inband, rfc2833 and INFO (obviously configuring'em also in
sip.conf).
> 
> I think that's a problem of the ISDN line (used with I4L modem
drivers),
> that does'nt pass the DTMF to the end point of the call.
> 
> Is there some thing i can do on the conf files or I have to search the
> answer into the source tree?
> 
> I googlized a bit and found some patch to isdn_tty (that should solve the
> problem of receiving dtmf from isdn line when calling with a person), but
> unfortunately, the kernel version is different and also correcting a bit
the
> patch, it doesn't work for me - i still get errors with patch.
> 
> Nothing found for the contrary use: sending dtmf over the isdn to make
> possibile a choice into an external ivr or menu system.
> 
> Any link/patch/suggestion?
> 
> Without it, my * box will be soon cut off by my boss (i need to set-up our
> pbx ASAP - prior to holidays... :( )
> 
> -- 
> Stefano Finetti
> 
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
-- 
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Need to be sure the ISDN device can send DTMF.  Can't it be done by just
returning -1 in ast_digit or something?

Mrak

On Fri, 1 Aug 2003, Stefano Finetti wrote:
>
> Hello,
>
> I'm trying to understand why when I make a call from a SIP phone to an
> external number who has an IVR system in which I've to choose some
options
> using the dialpad, it does'nt recognise the key pressed and remains
still
> waiting for my choose.
>
> I'm tryng using Grandstream 102, and i've tryed with all the 3
modes
> possibile:
>
> Dtmf inband, rfc2833 and INFO (obviously configuring'em also in
sip.conf).
>
> I think that's a problem of the ISDN line (used with I4L modem
drivers),
> that does'nt pass the DTMF to the end point of the call.
>
> Is there some thing i can do on the conf files or I have to search the
> answer into the source tree?
>
> I googlized a bit and found some patch to isdn_tty (that should solve the
> problem of receiving dtmf from isdn line when calling with a person), but
> unfortunately, the kernel version is different and also correcting a bit
the
> patch, it doesn't work for me - i still get errors with patch.
>
> Nothing found for the contrary use: sending dtmf over the isdn to make
> possibile a choice into an external ivr or menu system.
>
> Any link/patch/suggestion?
>
> Without it, my * box will be soon cut off by my boss (i need to set-up our
> pbx ASAP - prior to holidays... :( )
>
> --
> Stefano Finetti
>
> _______________________________________________
> Asterisk-Users mailing list
> Asterisk-Users@lists.digium.com
> http://lists.digium.com/mailman/listinfo/asterisk-users
>