Yealink SIP-T21 E2 User Manual page 15

LED Status
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
Line key LED (associated with a shared line)
The local SCA phone indicates the phone is involved in a SCA call, while the monitoring
SCA phone indicates the phone is not involved in the SCA call.
LED Status
Off
Fast flashing green
Solid green (for local SCA
phone)
Solid red (for monitoring
SCA phone)
Slow flashing green (for
local SCA phone)
Slow flashing red (for
monitoring SCA phone)
Slow flashing green (for
Description
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.
Description
The shared line is idle.
The shared line receives an incoming call.
The shared line is in conversation.
The shared line is dialing.
The shared line is seized.
The shared line conversation is barged in by the
other shared line party.
The shared line conversation is placed on public
hold.
The shared line conversation is placed on private
Overview
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