Polycom IP 550 User Manual

Page of 84
 Getting Started with Your SoundPoint IP 550 Phone
1 - 11
15.
Line Indicators—Individual multi-color LEDs display the dynamic call 
state and remote user status (busy lamp field (BLF) and presence). The 
mapping is:
— Solid green—An active call is in progress.
— Fast flashing green—There is an Incoming (ringing) call.
— Flashing red—The call is on hold.
— Solid red—The line is busy remotely (shared lines).
16.
Line Keys 
—Use these keys to activate up to four lines 
or speed dials that can be assigned to your phone. The associated icons 
represent:
— Registered line 
— Registered shared line 
— Unregistered line 
— VoiceMail/Messages 
— Speed-Dial 
— Ringing 
— Call if progress with HD Voice 
— Call Forward 
— Do Not Disturb 
— Conference 
— Presence/BLF