1.20.3 LED Indication
Description
The LED (Light Emitting Diode) of the Message/Ringer Lamp and following buttons (Line Status Buttons and
Corresponding Extension Status Button) show line conditions with a variety of light patterns.
Line Status Buttons: S-CO, G-CO, L-CO, INTERCOM, ICD Group, PDN
Corresponding Extension Status Button: DSS, SDN
1. Light Pattern of the Message/Ringer Lamp
[DPT]
• Incoming call from a trunk: Red flashing
• Incoming call from another extension: Green flashing
• Message(s) present (no incoming call): Red on
• No message(s) present (no incoming call): Off
[APT]
• Incoming call: Red flashing
• Message(s) present (no incoming call): Red on
• No message(s) present (no incoming call): Off
2. Light Pattern of the Line Status Buttons
Light Pattern
Line Status Button
Trunk Status
Intercom Line
Status
Incoming Call
Distribution
Group Line
Status
S-CO G-CO L-CO INTERCOM ICD Group
Off Idle
Green on This extension is using the line.
Slow green
flashing
This extension is holding the line.
Moderate
green flashing
This extension is holding the line using Exclusive Hold or using the line for an Un-
attended Conference.
Rapid green
flashing
Incoming call/
Privacy Re-
lease
Incoming call
Red on Incoming call
for another ex-
tension/Anoth-
er extension is
using the line/
Another exten-
sion has the
line on Exclu-
sive Hold.
Other exten-
sions are using
all trunks in the
trunk group.
— This extension
is logged out of
the incoming
call distribution
group.
Feature Guide 239
1.20.3 LED Indication