This allows you to add a third party to an existing conversation. The other parties may be on or off campus. When the third party answers, depress switch hook again to establish the three-way call. The third party can be dropped from the conference at any time by the controlling station by depressing the switch hook. When two outside calls are involved, all conferees are released when the controlling station hangs up.
Conference calls involving four to six people require operator assistance.
Dial 0 for the campus operator to establish such conferences. This automatically redials the last number you dialed, either an extension or an outside number. If this is a long-distance call, the access code must be reentered. Single rings indicate a call from within the campus. Double rings indicate a call from outside the campus.