Ring back when Manual Dial

Hi,
There is a problem with my single server setup having
Asterisk 1.2.27
ViciDial 2.0.4RC2
My agent Munually Dials the number using 'Fast Dial'. when he dials the number he does not hear the ring back, therefore, he cannot recognizes if the other party's phone is ringing. He only gets the voice if the other party picks up and says hello.
I have alredy tried the 'r' flag with tTo and without tTo in the extension.conf but none worked.
The ring back works when dialing number on softphone only without ViciDial.
Any idea what's could be the issue.
Thanks
There is a problem with my single server setup having
Asterisk 1.2.27
ViciDial 2.0.4RC2
My agent Munually Dials the number using 'Fast Dial'. when he dials the number he does not hear the ring back, therefore, he cannot recognizes if the other party's phone is ringing. He only gets the voice if the other party picks up and says hello.
I have alredy tried the 'r' flag with tTo and without tTo in the extension.conf but none worked.
The ring back works when dialing number on softphone only without ViciDial.
Any idea what's could be the issue.
Thanks