Panasonic KX-TD500 - Page 187

4-48 System Programming
4.2.7 System Option
Parameter
Value Range
(default)
Description/Function Reference
When a CO line is busied out manually by the
Manager/ an Operater or automatically by the system,
the state of Loop Relay and Ring-FG are controlled by
this setting.
1. ON
2. OFF-RING-
GND
3. OFF-RING-
OPEN
(3)
GCOT
Busyout
Looprelay
35