Section 71661 - Signal Systems(a) Where bed patients are cared for, a call system shall be maintained in operating order in all nursing units. Call systems shall be maintained to provide visible and audible signal communication between nursing personnel and patients. The minimum requirements are: (1) A visible signal in the corridor above the door of each patient room.(2) An audible signal and light indicating the room from which the call originates shall be located at the nurses' stations. Alternate systems must be approved in writing by the Department.(b) The nurses' call systems shall be designed to require resetting at the calling station where the call originates unless a two-way voice communication component is included in the system.Cal. Code Regs. Tit. 22, § 71661