asterisk users - Jan 2006 - Adjusting gain, Milliwatt and ztmonitor

I have been trying to adjust the gain as per this document without any 
success:

http://lists.digium.com/pipermail/asterisk-users/2004-November/071301.html

I have a PSTN and VoIP (SIP) connection via *.  I disabled all echo 
cancel/training in zapata.conf and set tx/rxgain to 0.  I then changed 
my extensions.conf so that when I call the VoIP line from the PSTN line, 
it plays the Milliwatt application tone.  However, when I call, I don't 
hear the tone and ztmonitor doesn't change at all.  What could be the 
problem?  I am running the latest svn source, Aastra 9133i sip phone and 
Digium TDM11B.

BTW - My PSTN is thru Verizon (MA) and I don't have their test tone #.  
If you know it, please e-mail it to me.