asterisk users - Nov 2006 - Diva Server, chan_capi and tone detection

Hi all,

 

I have a Diva Server V-BRI-2 card, which support, as written in reference
guide: 

Extended tone processing (human talker detection, generation and detection
of country-specific tones)

 

I would like to detect human speech and fax tone with asterisk. I think that
the diva card transmit a DTMF code when detecting voice, but chan_capi
doesn't receive this DTMF code. I verbose it more, displaying all DTMF
received, and only DTMF code "CNG" is received.

 

Did you know how I can enable this detection (see DivaReportTones in Diva
Server SDK) or how can I receive this DTMF in chan_capi ?

 

Thanks

Greg

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Hi all,

 

I have a Diva Server V-BRI-2 card, which support, as written in reference
guide: 

Extended tone processing (human talker detection, generation and detection
of country-specific tones)

 

I would like to detect human speech and fax tone with asterisk. I think that
the diva card transmit a DTMF code when detecting voice, but chan_capi
doesn't receive this DTMF code. I verbose it more, displaying all DTMF
received, and only DTMF code "CNG" is received.

 

Did you know how I can enable this detection (see DivaReportTones in Diva
Server SDK) or how can I receive this DTMF in chan_capi ?

 

Thanks

Greg

 

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On Tue, 21 Nov 2006, Gregory Duchatelet wrote:
> Hi all,
> 
>  
> 
> I have a Diva Server V-BRI-2 card, which support, as written in reference
> guide: 
> 
> Extended tone processing (human talker detection, generation and detection
> of country-specific tones)
> 
>  
> 
> I would like to detect human speech and fax tone with asterisk. I think
that
> the diva card transmit a DTMF code when detecting voice, but chan_capi
> doesn't receive this DTMF code. I verbose it more, displaying all DTMF
> received, and only DTMF code "CNG" is received.
> 
>  
> 
> Did you know how I can enable this detection (see DivaReportTones in Diva
> Server SDK) or how can I receive this DTMF in chan_capi ?
This would require a change in chan-capi. To get the extended tone detection
indications, additional request/parameter via CAPI must be issued.

Another thing is, how do you want to get these indications for use in 
your dialplan?

Armin

> This would require a change in chan-capi. To get the extended tone
> detection
> indications, additional request/parameter via CAPI must be issued.
First, thanks for your reply.
Do you have the CxDtmf.pdf document, from Eicon ?

If I understand good, you have to enable DTMF facilities 248, 249 and 250,
and then you receive DTMF code for tone detection :
0x81 for unidentified ton detected
0x80 for end of signal detected
0xC9 for human speech detected
Etc...
> Another thing is, how do you want to get these indications for use in
> your dialplan?
So, with DTMF code, you could handle it like for fax : redirect to extension
"vad" or something ...

Greg