AT&T SYSTEM 25 Manual page 31

Dropping a Conferee
When a conferee is dropped, all parties that were added by the dropped conferee are also
dropped. In addition, the entire conference may be dropped if a person attempts to drop the
individual who added him/her to the conference.
1
Press
2
Press the button of the conferee you want to drop.
Single-Line
Setting Up a Conference
1 Dial the first party.
2 After the party answers,
the first party on hold.
Listen for confirmation tone and dial tone.
3
4 Dial the second party.
After the second party answers, press the switchhook to join
5
the conference parties together.
or
If the second party does not answer, press the switchhook
twice to return to the first party. (If you hear dial tone,
press the switchhook once more.)
Dropping the Second Party
When in a conference, a single-line voice terminal user can drop the second party and
continue talking with the first. However, the first part y cannot be dropped to continue
talking with the second.
1
Press the switchhook.
Continue talking with the first party.
2
2-18 Voice Terminal Features
.
[DROP]
press the switchhook to put