Polycom 550 - Manual (Page 18)

User Guide SoundPoint IP 550 Phone
1 - 10
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 green—The call is held by the other party.
— 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 (solid)
— Registered shared line
— Unregistered line (outline)
— VoiceMail/Messages
— Speed-Dial
— Ringing
— Call if progress with HD Voice
— Call Forward
— Do Not Disturb
— Conference
— Presence/BLF
17. Graphic Display—Shows information about calls, messages, soft keys,
time, date, and other relevant data.
— Caller display information—first party, second party, number of calls