(a) The nurse's station must be equipped to receive resident calls through a communication system from:(1) resident rooms; and(2) toilet and bathing facilities.(b) The call cord does not have to be accessible in all parts of the room, but must be accessible to the resident. The system must be connected to on and off switches operable at each bed, toilet unit, and bathing unit.(c) Each call entered into the system must activate a corridor dome light above the bedroom, bathroom, or toilet corridor door that opens onto a corridor.(d) A visual signal at the nurses station must indicate the room from which the call was placed with an audible signal of sufficient amplitude to be clearly heard by nursing staff. The amplitude or pitch of the audible signal must not be irritating to residents or visitors.(e) The system must be designed so calls entered into the system may be canceled only at the calling station. Intercom-type systems which meet this requirement are acceptable.