Specifications
Programming Reference Guide 
GCA3A39-877, Rev 5, Issue 9/01  Page 10  Printed in the USA 
System Programming 
System programming involves features that affect the operation of every telephone in the 
system. Some parameters that you set with the system programming menu require that you 
take further programming action at the line or station level to engage, disengage, or 
customize a particular feature for an individual line, station, or an entire station class of 
service. 
LCD Messages 
Serial Ports 
SOHVA Tables 
System Speed Dials 
System Timing 
System Parameters 
Paging Zones 
System Feature Numbers 
System Button Designations 
System Station Block Table 
Enhanced Ringing Options 
Enhanced Ringing Holidays 










