Abstract: An apparatus and method is provided for limiting the connection time of selected telephone lines in a private branch exchange (PBX) telephone system to telephone numbers dialed therefrom. A maximum connection time is programmed into the system for selected lines. Calls are automatically terminated if the duration of the call exceeds the maximum time. The selected line is prevented from re-dialing the called number for a certain period of time. If desired, the selected telephone line is automatically enabled and disabled by the system at predetermined times. The telephone system may also incorporate other conventional features for certain ones of the telephone lines in the PBX system, including limited prefix dialing capabilities, limited area code dialing capabilities, blocking of incoming calls, and the like.