NEC Portrait 308 Feature Handbook page 91

Charts
Your phone is idle (not on a call)
Outside Calls
An outside line is busy
An outside call is ringing your phone The line key flashes Slowly (Red)
And then you answer it
You place the outside call on Hold
Or a co-worker places the call
on Hold
You place the outside call on
Exclusive Hold
You place the outside call on Hold
Intercom Calls
An Intercom call rings your phone
You answer the Intercom call
You place the Intercom call on Hold ICM flickers Slowly (Red)
And then it recalls to you
Miscellaneous Features
You activate Microphone Mute
You activate Do Not Disturb
You send a Message Waiting
You have a Message Waiting
You activate Call Forwarding
Your phone is Monitored
You are Monitoring a phone
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System Flash Rates for LEDs
All LEDs out (dark)
The line key is ON (Red)
The line key is ON (Green)
The line key flashes Quickly (Green)
The line key flashes Moderately
(Red)
The line key flickers Moderately
(Green)
The line key flashes Quickly (Green)
ICM flashes Quickly (Red)
ICM is ON (Red)
ICM flickers Slowly (Red)
MIC is ON (Red)
DND/CONF is ON (Red) or flashes
Moderately (Red) (depending on
programming)
MW flickers Moderately (Red)
MW flashes Quickly (Red)
TRFR flashes Slowly (Red)
MON flashes Quickly (Red)
MON flickers Moderately (Red)