Panasonic KX-TD500 System Reference Manual page 198

8.04 Fixed Night Service
Description
Call handling in Flexible and Fixed night service is
almost the same.
The difference is:
Flexible The Operator 1 (Attendant Console
or Extension) can change the night
answer destination.
Fixed A group of extensions (Night
Answer Group) can be assigned as
the destination of one or more CO
lines in night mode
If FIXED is selected, the assigned night answer
destination cannot be changed by the Operator 1.
To utilize this feature, set "Group-Trunk Group"
Incoming Mode (Night) to "FIXED". All CO lines
belong to this trunk group are covered by this
assignment.
Night Answer Group
A single group of extensions (called the Night
Answer Group) can be created to receive calls at
night.
Calls from more than one CO line may arrive at
this group.
The size limit of the group is 32 extensions.
CO1 CO2
Night Answer Group
To utilize this feature, program as follows.
1. Assign "Group-Trunk Group" Incoming Mode
(Night) to "FIXED".
2. Assign "Trunk-CO Line" Night Answer Point to
"NAG".
This CO line must belong to the Trunk Group
whose Incoming Mode (Night) is assigned to
FIXED.
3. Assign the DN of the destination extensions by
using NAG command.
Programming
"Group-Trunk Group (1/3)",
"Trunk-CO Line",
"Night Answer Group (NAG)"
Conditions
None
Operation
None
CO3
3-B-18
System Programming
Incoming Mode (Night)
Night Answer Point
Reference
VT Dumb
10-E-1.01 11-C-15.00
10-F-1.00 11-C-20.00
— 11-C-51.00