Hi,

We are trying to integrate Asterisk in front of our existing legacy PBX:

outside line -- FXO -- Asterisk PC -- FXS -- PBX -- Extensions

Asterisk answers outside calls and the IVR asks the user to dial extension #.

The problem is, that when Asterisk forwards calls from the outside line

to the old PBX (using DIAL()) the PBX answers, and as far as * is concerned, the call

is answered. Asterisk then dials the extension number, but even if the extension

is busy or no one answers, the call is answered as far as * is concerned.

We want Asterisk to:

-DIAL the PBX

-wait for the PBX to answer

-dial extension number

-If there is no answer at this extension start voicemail.

Any ideas?

How can we detect when an extension is busy/no answer AFTER PBX already answered the call?

Thanks,

Kupchinetsky Dmitry
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