AT&T MERLIN LEGEND Release 2.0 MLX Queued Call Console Operator's Manual page 106

Features
To Use Leave Message
When a call is unanswered or busy (you are listening to a
ringing or busy signal):
1. Select Leave msg from the Home screen.
2. Read status of message on display:
Msg Sent to if message was delivered.
Message Box Full if message was not
Cannot Send Message if message was not
NOTE:
If you use Leave Message to send a second message to
a co-worker who has not responded to your first message,
the second message replaces the first. The message
light remains on.
delivered because co-worker's message box is
full.
delivered, (for example, because co-worker
does not have a display telephone).
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Messaging