Abstract: A process for controlling a telephone switching system is disclosed which gives a telephone customer alternative ways of handling an incoming call while that customer is engaged with an existing call. The conventional call-waiting process is modified by permitting the dual tone multifrequency buttons to be operated for a predetermined short interval after the call-waiting signal is given to the called customer responsive to the particular tone signals keyed. The switching system is enabled to send busy tone or a predetermined announcement to the calling party or to reroute the calling party to an alternate destination.