Definitions of LED
LED Indicator
Condition Color Status
Default
OFF
During FW boot
ON
Speaker
Loudspeaker is activated during a call
R
ed
ON
D
efault
OFF
During FW boot
ON
Headset
Headset
or Headset group-listing mode is
activated
during call
Red
ON
D
efault
OFF
During FW boot
ON
Mute
Mute is active
Red
ON
D
efault
OFF
During FW boot
ON
Used for speed dial keys in standby mode
OFF
Line appearance: standby mode
OFF
Line appearance: a call is incoming
Fast blinking
Line appearance: is active
ON
Feature keys
Line appearance: hold or remote ho
ld
Green
Slow blinking
Boot
:
during FW boot
Red
ON
Boot
:
during DHCP process
(if any)
Red
Slow blinking
Boot
:
during SIP registration
Red
Fast blinking
Running mode
:
Ethernet connection is down
Red
Slow blinking
Running mode
:
IP connection is down (e.g.
no IP address allocated)
Red
Slow blinking
Running mode
:
SIP connection is down (e.g.
SIP registration or registration refresh failure)
Red
Slow blinking
Auto
-configuration
:
during configuration file
download
Red
Fast blinking
Auto
-configuration
:
during firmware file
download
Red
Fast blinking
System is programming FLASH
Red
ON
Ringing state
Green
Slow blinking
System
Alert messages and missed calls
Red
Green
Green
Slow blinking