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BLF on DSS Button
The Busy Lamp Field (BLF) indicator button is red when the corresponding extension is busy.
This is available for Direct Station Selection (DSS) buttons on a DSS console and for flexible
CO buttons assigned as DSS buttons on proprietary telephones.
LED Indication on the FWD/DND Button
The table below shows the lighting patterns for the FWD/DND Button.
Programming Guide Reference
[990] System Additional Information
System Programming [990]
Area (09), Bit (4,3)
When Call Forwarding
(FWD) is set
When Do Not Disturb
(DND) is set
11 (default)
10
01
00
Red Slow Flashing
Red On
Red On
Red Slow Flashing
Red On
Red On
Red Slow Flashing
Red Slow Flashing