[Asterisk-Users] Web service to start a conference and voice mail

[Greg Renouf]

Serge,

Are you talking about calls to the PSTN?  If so, there is no universal
standard for indicating the call is answered be voice mail.  This is
possible with GSM; however, you must have SS7 signalling (not directly
available on * at this time.)

I would recommend that you write your app so that it asks the person to
answers the call to enter a touch-tone to indicate they wish to be
connected to the conference.  This is much easier than having * guess if
it has reached a person or not...

-GSR

p.s. I'd love to have a look at your app if you are willing to share
it...




On Tue, 2004-03-16 at 17:44, Serge Mankovski wrote:
> Hi
> I have written a web service that starts a conference call and then monitors 
> call progress on the manager interface. It works nicely until conference in 
> a voice mail system. It would be better if I could intercept the fact that 
> the answering side is a voice mail and not to conference it in. The same 
> thing might happen with fax or modem, but I have not seen that happening 
> yet.
> 
> Is there a way to identify when if there is a voice mail machine of the 
> line, fax or a modem?
> 
> Thank you
> Serge
> 
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