[asterisk-users] Passing DTMF

[Christopher Gray]

Hello:

Yes, DTMF can be a problem on the phones themselves as Sam observed, and inband 
can help with this in certain situations.  I have DTMF working internally in my 
pbx just fine though.

The problem here is transmitting dtmf from my pbx through a carrier to a party 
who has phoned into my pbx through that carrier.  I have this working on 
VoicePulse but only about 75% of the time.  VoicePulse has indicated to me via 
Support that they know this is a flaw in their system and someday they plan to 
fix it, but no commitment about when.

So my question is:  Does anybody know of a carrier who handles DTMF correctly, 
particularly in situations where my pbx is called externally?

Thanks.

Chris


On Sat, 24 Jan 2009, Jon Weisman wrote:

> since you're using ulaw
>
> try setting dtmfmode = inband
>
> if this doesnt work try = auto
>
> -Jon
>
>
> ----- Original Message -----
> From: "Christopher Gray" <chris at bayareadigital.us>
> To: "Asterisk Users Listserve" <asterisk-users at lists.digium.com>
> Sent: Friday, January 23, 2009 8:13 PM
> Subject: [asterisk-users] Passing DTMF
>
>
>> Hello:
>>
>> I need to be able to reliably send out touchtone to any calling party who
>> comes
>> into my pbx.  The standard things to help with this have been done as far
>> as I
>> know:
>>
>> 1.  dtmfmode is rfc2833.
>>
>> 2.  The phones themselves are set to rfc2833.
>>
>> 3.  allow=ulaw
>>
>> 4.  On internal calls between extensions, touchtone works fine.
>>
>> Also, I have reviewed sip.conf with my carriers.
>>
>> Now for the question:  does anybody know of a carrier that can reliably
>> allow an
>> extension in my pbx to send touchtone to a calling party?
>>
>> I have tried Vitelity and VoicePulse.  Neither can do this, and VoicePulse
>> indicates they know it's a problem and will fix it at some unknown time in
>> the
>> future.
>>
>> For the curious, here is the reason for the need.  My wife, who works as a
>> translator, will use this extension to receive calls from companies
>> needing
>> translation.  When she receives such a call, step 1 for her is to enter an
>> employee id code.  At the end of the call, she must enter an additional
>> code to
>> receive an ending time.
>>
>> Vitelity can't do this at all.  VoicePulse works about 75% of the time
>> which is
>> not acceptable.
>>
>> Thanks for any advice.
>>
>> Chris
>>
>>
>>
>>
>>
>>  ----------------------------------------
>> Christopher Gray, President
>> Bay Area Digital
>>
>> Promoting good health with innovative technology
>>
>> 870 Market Street, #653
>> San Francisco, CA 94102
>> Phone:  (415) 217-6667
>> fax:    (415) 962-2520
>> Email:  chris at bayareadigital.us
>>
>> _______________________________________________
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>
>
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----------------------------------------
Christopher Gray, President
Bay Area Digital

Promoting good health with innovative technology

870 Market Street, #653
San Francisco, CA 94102
Phone:  (415) 217-6667
fax:    (415) 962-2520
Email:  chris at bayareadigital.us