AT&T Merlin Legend MLX-20L Operation Manual page 127

Q
QCC operator's headset
An ultralight earpiece and microphone that connects to the handset
outlet on your console. 1-8
Queued Call Console (QCC)
An operator's console that receives calls (one at a time) in sequence.
An incoming call is put into a queue until an operator is available to
handle the call. 1-1
R
Release
A feature you use to complete a call so you can answer the next call.
You can also use Release to disconnect from a three-way conference
call. 1-10
S
Send/Remove Message
A feature you use to turn on the Message light on co-workers'
phones, notifying them of messages to be picked up from the system
operator. 1-10, 4-29
I-13