[Asterisk-Users] i4l-modem dtmf detection

[Matthew Enger]

Hello,

You need to apply two patches:

1) Turns off DTMF detection in the linux kernel (i4l side)
2) Enables DTMF detection on the chan_modem driver.

You can find more information at
http://www.marko.net/asterisk/archives/30301/0849.html

The kernel is detecting DTMF tones from your voice :)

I applied this yesterday and it is working great (kernel 2.4.22 and
latest asterisk cvs)

Regards,
	Matthew Enger
	menger at xi.com.au

On Thu, 2003-11-06 at 05:34, Tomaz Izanc wrote:
> hello!
> 
> I have active call from i4l modem to ZAP (FXS).When someone on i4l 
> (telco side) speaks i hear DTMF tones on other side (ZAP).
> How to turn off DTMF detection on  modem-i4l side ?
> 
> Is it possible to do that ??
> 
> status of active channels:
> 
> server*CLI> show channel Modem[i4l]/ttyi0
>  -- General --
>            Name: Modem[i4l]/ttyI0
>            Type: Modem
>        UniqueID: 1068056585.53
>       Caller ID: 5
>     DNID Digits: (N/A)
>           State: Up (6)
>           Rings: 0
>    NativeFormat: 64
>     WriteFormat: 64
>      ReadFormat: 64
> 1st File Descriptor: 8
>       Frames in: 10914
>      Frames out: 7514
>  Time to Hangup: 0
>  --   PBX   --
>         Context: remote
>       Extension: 0346546777
>        Priority: 2
>      Call Group: 0
>    Pickup Group: 0
>     Application: Dial
>            Data: Zap/1/0346546777wwwww||r
>           Stack: 0
>     Blocking in: ast_waitfor_nandfds
> 
> ---------------------------------------------------------------------
> server*CLI> show channel Zap/1-1
>  -- General --
>            Name: Zap/1-1
>            Type: Zap
>        UniqueID: 1068056588.54
>       Caller ID: 5
>     DNID Digits: (N/A)
>           State: Up (6)
>           Rings: 0
>    NativeFormat: 68
>     WriteFormat: 64
>      ReadFormat: 64
> 1st File Descriptor: 18
>       Frames in: 5536
>      Frames out: 6378
>  Time to Hangup: 0
>  --   PBX   --
>         Context: nme
>       Extension: s
>        Priority: 1
>      Call Group: 0
>    Pickup Group: 0
>     Application: Bridged Call
>            Data: Modem[i4l]/ttyI0
>           Stack: -1
>     Blocking in: ast_waitfor_nandfds
> 
> 
> ---------------------------------------------------------------------
> server*CLI> zap show channel 1
> Channel: 1>
> File Descriptor: 18
> Span: 1
> Extension:
> Context: nmt
> Caller ID string:
> Destroy: 0
> Signalling Type: FXS Kewlstart
> Owner: Zap/1-1
> Real: Zap/1-1 (Linear)
> Callwait: <None>
> Threeway: <None>
> Confno: -1
> Propagated Conference: -1
> Real in conference: 0
> DSP: yes
> Relax DTMF: no
> Dialing/CallwaitCAS: 0/0
> Default law: ulaw
> Fax Handled: no
> Pulse phone: no
> Echo Cancellation: 128 taps, currently ON
> Actual Confinfo: Num/0, Mode/0x0000
> Actual Confmute: No
> 
> 
> 
> tnx.
> Tomaz
> 
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-- 
Matthew Enger <menger at xi.com.au>
Xintegration