Polycom 331 Owner's Manual page 29

No Part Name
1 Message Waiting
Indicator
2 Line Icons
3 Soft Keys
Description of function
This will alert you to voice and text (instant) mes-
sages.
Use these keys to activate up to lines that can be
assigned to your phone. The associated icons
represent:
-Registered line
-Registered shared line
-Unregistered line
-Voicemail
-Speed-Dial
-Ringing
-Call in progress/Conference
-Call Forward
-Do Not Disturb
The screen will display labels for these keys, to iden-
tify their context-sensitive functions
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