Led Instructions; Power Indicator Led; Line Key Led - Yealink SIP-T21 E2 User Manual

Power Indicator LED

LED Status
Solid red
Fast flashing red (300ms)
Slow flashing red (1s)
Off

Line key LED

LED Status
Solid green
Fast flashing green
Slow flashing green
Off
Line key LED (configured as a BLF key or BLF List key)
LED Status
Solid green
Fast flashing red (200ms)
Solid red
Slow flashing red (1s)
Off
Description
The phone is initializing.
The phone is ringing.
The phone receives a voice mail or text message.
The phone is powered off.
The phone is idle.
The phone is busy.
The call is placed on hold or is held.
The call is muted.
Description
The line is seized.
The line is in conversation.
The line receives an incoming call.
The call is placed on hold.
The line is inactive.
Description
The monitored user is idle.
The monitored user receives an incoming call.
The monitored user is busy.
The monitored user's conversation is placed on
hold (This LED status requires server support).
The call is parked against the monitored user's
phone number.
The monitored user does not exist.
Overview
5