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
Red on Incoming call
for another
extension/
Another
extension is
using the line/
Another
extension has
the line on
Exclusive
Hold.
Other
extensions
are using all
trunks in the
trunk group.
— This
extension is
logged out of
the incoming
call
distribution
group.
Slow red
flashing
Another
extension is
holding the
line.
—
Rapid red
flashing
Incoming call to the incoming call distribution
group in Ring distribution method
—
For information on the light patterns of PDN and SDN buttons, refer to 1.7.1 Primary Directory Number
(PDN)/Secondary Directory Number (SDN) Extension
.
3. Light Pattern of the Corresponding Extension Status Button
Light Pattern Corresponding Extension Status Button (DSS)
Off Idle
Red on Busy/Incoming call
*1
/DND for trunk calls
Rapid red flashing Incoming call
*2
*1
Only when Call Pickup by a DSS button is disabled.
*2
Only when Call Pickup by a DSS button is enabled.
4. Flashing Light Patterns
Slow Flashing
Moderate Flashing
Rapid Flashing
1 s
234 Feature Guide
1.20.3 LED Indication