Installation   
  EST3 Installation and Service Manual 
5.2
Design considerations • 5.49
 
Connecting a CDR-3 Zone Coder for coded tone output • 5.50 
What you will need • 5.50 
Adjusting the gain on the 3-ASU auxiliary input • 5.50 
Connecting an external modem for use with the Remote 
Diagnostics Utility • 5.53
 
Running the RPM and distributing profiles • 5.55