| 摘要 |
Methods and systems for allowing communication between an exterior and an interior of a location, or a person associated with the location. A device positioned exterior to the location is connected to a communications system of the location. The device includes a signal generator for providing a signal responsive to input such as from a person on the exterior. In response, the communications system initiates or forwards a communication to a communications unit such as a wireless unit of a person associated with the location. The communication may be initiated or forwarded after a selected time. The device exterior to the location allows for participation in the communication. A voicemail or other system may be included for receiving a message if the communication is not answered. The device may be switchable to doorbell mode, in which case, the device does not generate the signal to the communications system and no communication is initiated or forwarded.
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