AT&T MERLIN LEGEND Release 2.0 MLX Direct-Line Consoles Operator's Manual page 34

About Your Direct-Line Console
Using Message Status Lights
When the light next to Message Status is on, the DSS
extension button lights show message status: if the DSS
button light is on, that person has an operator message.
You can also check message status if your console has Auto
Dial buttons programmed with inside extensions. The red
light next to an Auto Dial button is on when your co-worker
has an operator message waiting.
To alert a co-worker about a message, you can use
Send/Remove Message to turn on a message light on his or
her telephone. However, if the message light is already on,
sending a second message may turn it off.
To help you avoid errors, your DSS has a Message Status
button that lets you check the status of co-workers' message
lights before you use Send/Remove Message.
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