Originating user dials the precedence level access code followed by the extension
number of the destination party
The call is forwarded immediately to the call forwarding destination of the
destination user. The rules of MLPP will apply to the call forwarding destination.
Preemption at a busy station that has call forwarding activated
Originating user dials the precedence level access code followed by the extension
number of the destination user. The destination user is busy. It also has unconditional
call forwarding activated.
The call is not forwarded. The original call of the destination user is
preempted.
Call forward on no reply
Originating user dials the precedence level access code followed by the extension
number of the destination user. The destination user starts hearing precedence ringing.
The destination user does not answer. The call is forwarded to a new party. The
destination user stops ringing, the new party starts precedence ringing.