2.2 System Configuration—Software
Feature Guide 217
2.2 System Configuration—Software
2.2.1 Class of Service (COS)
Description
Each extension is assigned a Class of Service (COS) number (→ Class of Service [602]). The following
features operate differently depending on an extension's COS.
a) Internal Call Block (→ 1.1.2.2 Internal Call Block)
b) Call Forwarding (FWD) (→ 1.3.1.2 Call Forwarding (FWD))
c) Do Not Disturb (DND) Override (→ 1.3.1.3 Do Not Disturb (DND))
d) Call Pickup (→ 1.4.1.3 Call Pickup)
e) Account Code Entry (→ 1.5.4.3 Account Code Entry)
f) External Call Block (→ 1.5.5.3 CO Line Access)
g) Executive Busy Override (→ 1.7.2 Executive Busy Override)
h) Call Monitor (→ 1.7.3 Call Monitor)
i) Off-hook Call Announcement (OHCA) (→ 1.7.4.3 Off-hook Call Announcement (OHCA))
j) Whisper OHCA (→ 1.7.4.4 Whisper OHCA)
k) Toll Restriction (TRS) (→ 1.8.1 Toll Restriction (TRS))
l) Extension Dial Lock (→ 1.8.2 Extension Dial Lock)
m) Walking COS (→ 1.8.4 Walking COS)
n) CO Line Call Limitation (→ 1.10.8 CO Line Call Limitation)
o) Call Transfer (→ 1.11.1 Call Transfer)
p) Door Open (→ 1.15.2 Door Open)
q) Direct Inward System Access (DISA) (→ 1.15.6 Direct Inward System Access (DISA))
r) Wireless XDP Parallel Mode (→ 1.20.3 Wireless XDP Parallel Mode)
s) Station Message Detail Recording (SMDR) for Outgoing CO Line Call (→ 1.21.1 Station Message
Detail Recording (SMDR))
t) Time Service Switching (→ 2.2.4 Time Service)
u) Manager Features (→ 2.2.6 Manager Features)
v) PT Programming (→ 2.3.2 PT Programming)
Conditions
• Walking COS
Extension users can make a call from extensions of a less-privileged COS by using their own COS
temporarily.
User Manual References
1.2.6 Calling without Restrictions
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