2.6 COS Programming
226 General Programming 
2.6 COS Programming
[500-501] Toll Restriction Level – Day / Night
Description
Each extension must be assigned a Class of Service (COS). These programmes set the toll 
restriction value for each COS in day or night mode.
Selection
• COS number: 
1 through 8, 
 ( =all COS)
• Level number: 
1 through 8
Default
COS 1 through 7 – Level 1 (Day / Night);
COS 8 – Level 7 (Day / Night)
Programming
1.
Enter 
a programme address (500 for day or 501 for night).
Display example: 500 TRS DAY LVL
2.
Press 
NEXT.
Display: COS NO?
3.
Enter a 
COS number
.
To enter COS number 1, you can also press 
NEXT
.
Display example: COS1:1
4.
Enter a 
level number
.
To change the current entry, press 
CLEAR
 and enter the new number.
5.
Press 
STORE.
6.
To programme another COS, press 
NEXT
 or 
PREV,
 or 
SELECT
 and the desired 
COS 
number
.
7.
Repeat steps 4 through 6.
8.
Press 
END.
Conditions
• To assign all COS to one selection, press the   key in step 3. In this case, the display shows 
the contents programmed for COS 1.