AT&T MERLIN LEGEND Release 2.0 MLX Queued Call Console Operator's Manual page 68

Quick Start
Dropping Last Person Called
You can also press Drop and then the Call button for the
conference to drop the last person added to the conference.
You can inspect the conference Call button to see which
person is to be dropped (indicated by an asterisk next to the
person's name).
NOTE:
If you are part of a 3-way conference, you can
press Release to drop out of the conference while
the others continue to talk. You can then handle
other calls.
If you are parl of a conference and drop out using
Forced Release, the entire conference call is
disconnected. Put the conference call on hold so
you can get calls while the participants continue to
talk.
The transmission quality may vary when
conferencing to outside lines.
Making Conference Calls
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