Panasonic KX-TD500 System Reference Manual page 805

10.00 CO Access Control
Description
The attendant can control CO lines to prevent
them from being accessed from extensions by
employing CO Management screen.
If CO busy out is assigned to a CO line, both
extensions and attendant consoles cannot access
the line.
Refer to Section 3-F-8.00 "CO Busy Out" for
further information.
If CO access control is assigned to a CO line,
extensions cannot access the line.
CO busy out can also be set by dialing the
feature number for "Busy Out Trunk".
Programming
System Programming
"System-Numbering Plan (9/11)",
Busy Out Trunk
Unbusy Trunk
Conditions
None
Reference
VT Dumb
10-D-6.09 11-C-11.00
6-J-23
Operation
Setting CO busy out by dialing the feature
number
1. Press an idle LOOP key.
LOOP
• The SRC indicator lights and
dial tone sounds.
2. Dial the feature number for "Busy
Out Trunk" (Default: *77) and
trunk port physical number in
succession.
• Confirmation tone sounds and
the LOOP key is released
automatically.
(Supplement)
To cancel "CO Busy Out", dial the feature number
for "Unbusy Trunk" (Default: #77) and trunk port
physical number in succession.