Remote status indication shall be required at ground floor entrances into all enclosed stairways. Status may be indicated by a remote annunciator panel showing the alarm floor(s) or by an electronic audio system that automatically indicates the alarm floor(s) through its own voice communication system. Speakers for this voice communication system may be combined with the building's local or public address speakers but shall only transmit a signal to the stairway speakers at their entry levels. (Prior code §§ 9.28.1235, 15.12.1207)