Abstract: 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.

Abstract: 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.

Abstract: An intercommunication system in an apartment complex comprises residential buildings, each including room parent devices installed in respective rooms; a collective entrance device having a call unit enabling a call manipulation for calling a visit destination room parent device; a storage unit stored with a call table having room numbers correlated with pieces of room parent device IDs for identification of the room parent devices, respectively; a processing unit performing processing of converting a signal input to the call unit into the room parent device ID of a call target room parent device based on the call table; and a transmission unit transmitting the room parent device ID to the room parent devices in the building of the terminal device; and a building control unit connecting the collective entrance device to the room parent devices of the rooms of the building of the building control unit, by an intercom line.

Abstract: An intercommunication system in an apartment complex comprises residential buildings, each including room parent devices installed in respective rooms; a collective entrance device having a call unit enabling a call manipulation for calling a visit destination room parent device; a storage unit stored with a call table having room numbers correlated with pieces of room parent device IDs for identification of the room parent devices, respectively; a processing unit performing processing of converting a signal input to the call unit into the room parent device ID of a call target room parent device based on the call table; and a transmission unit transmitting the room parent device ID to the room parent devices in the building of the terminal device; and a building control unit connecting the collective entrance device to the room parent devices of the rooms of the building of the building control unit, by an intercom line.