An indicator apparatus for a patient-nurse communication system, comprising: an indicator housing (206, 222, 241, 296, 552) mountable to a wall or a ceiling, a plurality of visual indicators (208-214, 224, 258-260, 298, 586) individually operably coupled to the indicator housing (206, 222, 241, 296, 552), the visual indicators (208-214, 224, 258-260, 298, 586) comprising: a plurality of light guides (258, 259, 260, 261, 262, 263, 265, 267, 269), the light guides (258, 259, 260, 261, 262, 263, 265, 267, 269) being arranged in pairs, a multi-color light source (302, 504-514) supported by the housing (206, 222, 241, 296, 552), the light source (302, 504-514) comprising a plurality of multi-color lights, each aligned with a respective light guide (258, 259, 260, 261, 262, 263, 265, 267, 269), and a plurality of icon sleeves, each sleeve having one or more icons and each sleeve being configured to slide over opposing faces of each pair of light guides, electrical circuitry operably coupled to the lights (302, 504-514) and configured to receive electrical signals from the patient-nurse communication system indicative of at least one color to be displayed by the lights, whereby the visual indicators (208-214, 224, 258-260, 298, 586) selectively illuminate in one or more of the colors emitted by the multi-color lights in response to signals received from a call-originating device of a patient-nurse communication system, a memory comprising at least one parameter relating to a call from the call-originating device of the patient-nurse communication system, and computer circuitry configured to access the memory, read the at least one parameter, identify at least one color to be illuminated by the lights based on the at least one parameter, and send an electrical signal to the lights (302, 504-514) to illuminate the at least one selected color in response to the call. an indicator housing (206, 222, 241, 296, 552) mountable to a wall or a ceiling, a plurality of visual indicators (208-214, 224, 258-260, 298, 586) individually operably coupled to the indicator housing (206, 222, 241, 296, 552), the visual indicators (208-214, 224, 258-260, 298, 586) comprising: a plurality of light guides (258, 259, 260, 261, 262, 263, 265, 267, 269), the light guides (258, 259, 260, 261, 262, 263, 265, 267, 269) being arranged in pairs, a multi-color light source (302, 504-514) supported by the housing (206, 222, 241, 296, 552), the light source (302, 504-514) comprising a plurality of multi-color lights, each aligned with a respective light guide (258, 259, 260, 261, 262, 263, 265, 267, 269), and a plurality of icon sleeves, each sleeve having one or more icons and each a plurality of light guides (258, 259, 260, 261, 262, 263, 265, 267, 269), the light guides (258, 259, 260, 261, 262, 263, 265, 267, 269) being arranged in pairs, a multi-color light source (302, 504-514) supported by the housing (206, 222, 241, 296, 552), the light source (302, 504-514) comprising a plurality of multi-color lights, each aligned with a respective light guide (258, 259, 260, 261, 262, 263, 265, 267, 269), and a plurality of icon sleeves, each sleeve having one or more icons and each sleeve being configured to slide over opposing faces of each pair of light guides, electrical circuitry operably coupled to the lights (302, 504-514) and configured to receive electrical signals from the patient-nurse communication system indicative of at least one color to be displayed by the lights, whereby the visual indicators (208-214, 224, 258-260, 298, 586) selectively illuminate in one or more of the colors emitted by the multi-color lights in response to signals received from a call-originating device of a patient-nurse communication system, a memory comprising at least one parameter relating to a call from the call-originating device of the patient-nurse communication system, and computer circuitry configured to access the memory, read the at least one parameter, identify at least one color to be illuminated by the lights based on the at least one parameter, and send an electrical signal to the lights (302, 504-514) to illuminate the at least one selected color in response to the call.