ringback when the channel is answered

["eng. Anatoli Marinov" <tolisoft@xxxxxxxxx>]

Hi guys,
I am trying to configure an asterisk server for our office.
Asterisk 1.4.17 SIP only

The problem appears when the call comes from external point to our
internal network. So when the server receives the call the channel is
answered and the remote user hears prompt which invite him to enter
internal private number. After that the server starts to wait the
extension. After timeout the server executes Dial application and
sends invite to sip client from our internal network. The problem is
in this point. I want to play ringback tone to remote user when he
waits internal user to pick up his phone but I could not instruct
Asterisk to generate fake ringback in rtp stream .

Is there a solution for this?

Thanks in advance.

-- 
Best Regards
eng. Anatoli Marinov

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