6
Indicator lights & tones
Indicator lights
DO NOT DISTURB
• On when the Do Not Disturb function is on.
(AUTO) REDIAL
When auto-redial is active:
• Flashes when the telephone is dialing the desired 
number.
• On between dialing attempts.
DTAD
• 
On when the answering system or auto attendant 
system is ready to answer calls. 
•  Flashes when there are new private or central  
  messages.
LINE
Green:
• On when the line is in use.
• Flashes slowly when the line is on hold. 
• Flashes quickly when there is an incoming 
transferred call on the line.
• Flashes quickly when there is an incoming auto 
attendant transferred call on the line.
• Flashes quickly when there is an incoming call.
• Flashes sequentially (two short flashes with a 
long one continually) when the auto attendant 
is answering or directing calls, or playing or 
recording announcements and messages.
Red:
• On when another telephone in the system is using 
the line. 
• Flashes slowly when the line is on hold by 
another telephone in the system.