Hearing Phone Ring When Dialing Through Modem

Hi:

I am writing a simple phone dialer and would like the user to hear the
phone ring at the other end through the speaker.  I have included the
M2 command (speaker always on) and L3 command (high speaker volume) in
the initialization string and all I hear is the dialing process but
not the handshake or the ringing.  Any help would be greatly
appreciated.

agwe...@csi.com