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. On certain features, when you have a party on hold and encounter a busy, intercept, or reorder tone, or no answer after you dial, depress the switch hook, wait for a moment, and then press the switch hook again to return to your held call. Each number can be a complete or partial telephone number, an extension, or a feature code. Dial the number, extension, or feature code you wish to store. When you place a campus call to a busy or unanswered extension, the system will send you a three-burst ring when the called extension becomes available, thus eliminating the need for you to redial.