User Guide for the Polycom
®
 SoundStation Duo
™
 Conference Phone
12 Polycom, Inc.
 
PSTN Mode
The following items display on your phone screen when it operates in PSTN 
mode.
PSTN Screen Item Description
Status bar The top-most line on the screen that can display the following: call and line information, 
name of the screen you’re viewing, scrolling notifications, the date and time, and 
incoming call information.
Line and Call icon Shows line status when the phone is idle (for example, it indicates if the PSTN line is 
connected or DND is enabled), and call status (for example, it indicates if dialing is in 
progress or if the phone has an active call).
Notifications Indicate that you have missed calls or have enabled a certain feature. If you have more 
than one notification, they scroll one after another.
Position indicator An arrow to indicate your position in a list of information or menu items:
—You’re at the top of the list. You can only scroll down.
—You can scroll up or down.
—You’re at the end of the list. You can only scroll up.