A nurse call system that enables a call for a nurse from anywhere in a hospital ward while a patient carries a mobile phone is provided. The nurse call system includes a plurality of patient mobile phones 10 are carried by hospitalized patients and connected to a controller 8 via a base station 12 as with nurse mobile phones 9, and each patient mobile phone 10 has a hospital room ID and a nurse call slave device ID registered therein for recognizing a bed location of the patient carrying the patient mobile phone 10, thus enabling a nurse call operation for transmitting a call signal with the hospital room ID and the slave device ID added thereto, to the nurse call master device 7 and at least one of the nurse mobile phones 9, through a predetermined operation.

A method of managing communications between communication devices within a digital intercom system includes providing input and output tables for each communication device. The tables for each device are made up of cells formed from linear arrays corresponding to communication channels and the other devices. When two devices communicate on a given channel, a cell in the appropriate input and output table is identified based on the channel and the devices communicating. The cells provide volume control information which can be relied upon to determine if or to what degree audio signals should be transferred between the devices.

A method of managing communications between communication devices within a digital intercom system includes providing input and output tables for each communication device. The tables for each device are made up of cells formed from linear arrays corresponding to communication channels and the other devices. When two devices communicate on a given channel, a cell in the appropriate input and output table is identified based on the channel and the devices communicating. The cells provide volume control information which can be relied upon to determine if or to what degree audio signals should be transferred between the devices.

Described herein is a retrofit digital speaker system comprising two or more retrofitted speaker enclosures, each of the two or more retrofitted speaker enclosures (enclosures) comprising: at least one speaker; and an analog-and-digital interface adapted to receive digitally encoded audio signals, electrical power, and digital command signals, and wherein the digitally encoded audio signals, electrical power, and digital command signals are transmitted over existing two wire analog audio cables, and further wherein the two or more retrofitted speaker enclosures are wired in a daisy chain fashion, via the existing two wire analog audio cables.

Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for a virtual intercom. In some implementations, a request from a visitor device to communicate with an occupant of a particular unit of the facility is received. A location of the visitor device is received. Based on the received location, it is determined that the visitor device is within a predetermined bounded area. An occupant profile is identified based on the received request. Information associated with the occupant profile is obtained. Based on the obtained information, it is determined the occupant has registered a profile. Based on the obtained information, a communication path to an occupant device is identified. The request from the visitor device is sent, using the communication path, to an occupant device belonging to the occupant. A response from the occupant device is received. Based on the response, an action is performed.

Methods and architectures for improving operation of 9-1-1 and other emergency services networks. Enriched data (e.g., text messages, videos, phase II location information, etc.) may be transmitted to a PSAP via a secondary communication channel (i.e., data), wherein the primary communication channel is a voice telephony trunk. Disclosed embodiments may increase the speed with which accurate location information is made available to improve call routing accuracy and decrease dispatch time. Some embodiments may also enable continued operation of legacy emergency services systems during and after transition to next generation systems.

A method and system for federating location of a point of emergency across a plurality of networks is disclosed. The method includes receiving, by a Location Service Orchestrator (LSO), an emergency alert from a User Equipment (UE), wherein the UE is communicatively coupled with a first network from the plurality of networks. The method further includes determining, by the LSO, a location of the UE based on the received emergency alert. The method includes refining, by the LSO, the determined location based on a network initiated location determination mechanism of the first network, when the accuracy of determined location of the UE is below a pre-defined threshold for locational accuracy. The method further includes federating, by the LSO, the refined location of the UE across the plurality of networks.

In an intercom system to be used in an apartment complex configured by residential buildings and a centralized building that can communicate with the residential buildings, the residential buildings includes: residential room master devices disposed in residential rooms, collective entrance devices which can communicate with the residential room master devices; and a building controller. The building controller has: a building controller ID that, when the centralized building is called by one of the residential room master devices via the building controller, is used in recognition in which the centralized building recognizes the building controller; and a collective entrance device ID that, when the centralized building is called by one of the residential room master devices via the building controller, is used in recognition in which the one residential room master device recognizes the building controller as a virtual collective entrance device that is different from the collective entrance devices.

The intercommunication system according to the invention is an intercommunication system used in an apartment complex comprising plural residential buildings. Each of the plural residential buildings is equipped with room parent devices installed in respective rooms; a collective entrance device which enables a call manipulation for calling one of the room parent devices; and a building control unit which connects, by an intercom line, the collective entrance device and the room parent devices of the respective rooms of the residential building. The collective entrance device has a storage unit which is stored with terminal information of the collective entrance device. The building control units of the plural respective residential buildings are connected to each other by a network in which a communication is performed according to a general-purpose protocol and can communicate, over the network, with an external apparatus that is connected to an external network.

Embodiments can enable a passenger to connect his/her portable device, such as smart phone to a display positioned to be used by the passenger. After the passenger connects the portable device to the passenger display, the passenger may be enabled to control the portable device by providing inputs through the passenger display and/or the portable device. In some embodiments, the passenger may be enabled to control one or more in-vehicle devices through the portable device after it is connected to the passenger display.