Specifications
Programming Reference Guide 
GCA3A39-877, Rev 5, Issue 9/01  Page 4  Printed in the USA 
Parameters/Options 2 
Similar to the previous situation, an extraordinary number of Serial Data Ports may be 
required in a configuration that does not have the second or third cabinet available. In these 
cases there is a combination of software that has to be enabled in conjunction with the 
physical placement of the DXOPT-COM cards as outlined below. 
Serial Ports 11-18 Select: 
•  Serial Data Ports 3 through 10 are located on the Services board. 
•  Serial Data Ports 11 through 18 may be installed in the lower two slots of one of the 
following three locations: 
*  Interface board 2 installed in upper expansion cabinet 
*  Interface board 3 installed in lower expansion cabinet 
*  Auxiliary board installed in the main cabinet 
•  You must take this programming action to match serial data ports 11 through 18 with the 
installation location that you choose for the DXOPT-COM card that provides the ports. 
Group Intercoms 
•  A system using a 4 MB RAM card, will support 984 Group Intercom numbers. 
•  A system using a 6 MB RAM card, will support 1864 Group Intercom numbers. 










