[VoIP] In-Band Signaling

Steph Kerman stfkerman at jps.net
Sun Jun 3 22:13:07 CDT 2007


Presumably you are talking about DP received in the form of actual 
supervisory signal state changes rather than audio clicks in the voice 
path.  It sounds like the DTMF/MF conversion is for anything appearing 
in the voice path.  What does it do with *, # and C4 (H4) tones?

SK

Shane Young wrote:
> Yup
>
> I've also seen (heard) it convert rotary to tone on the fly as well.
>
>
> Quoting Steph Kerman <stfkerman at jps.net>:
>
>   
>> A digit at a time "on the fly"?
>>
>> SK
>>
>> John R. Covert wrote:
>>     
>>>> I'm pretty sure you won't be able to tell the difference.
>>>>
>>>>         
>>> What you will notice (and this is actually a bug, but it's cool) is
>>> that Asterisk will convert any DTMF sent by a caller to a called party
>>> on an MF trunk group into MF even after the call is established.
>>>
>>> This can be demonstrated by calling into the Wawina Loop-Around,
>>> via CNET.  This is an Asterisk MF trunk group.   Then call into the
>>> other side.  Touch-tone will be converted to MF during the call.
>>>
>>>
>>>
>>>       
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>>
>>     
>
> --Shane
> +1-821-7311 CNET
>
>
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