4.8 Extension Programming
Class of Service
601
System Programming 4-121
Description Programs each extension for Class of Service (COS). The COS
determines the call handling abilities of each extension.
Selection • Jack number: 1 through 8, (-1 / -2),
( =all jacks, -1 = first part, -2 = second part)
• COS number: 1 through 8
Default All jacks-1/2 – COS 1
Programming 1. Enter 601.
Display: 601 COS #
2. Press NEXT.
Display: Jack NO?→
3. Enter a jack number.
To enter jack number 1, you can also press NEXT.
To select the second part (-2), press NEXT after entering a jack number.
Display example: #1-1:COS1
4. Enter a COS number.
To change the current entry, enter the new number.
5. Press STORE.
6. To program another jack, press NEXT or PREV, or
SELECT and the desired jack number.
7. Repeat steps 4 through 6.
8. Press END.
Conditions • There is a maximum of eight Classes of Service. Every extension
must be assigned to a Class of Service and is subject to the COS
Programming of programs [500] through [509] and [991].
• For an explanation of jack numbering, see “Rotation of jack number”
on page 4-7.
• To assign all jacks to one COS, press the key in step 3. In this
case, the display shows the contents programmed for Jack 1.
Feature References
Section 3, Features
Class of Service (COS)
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