Abstract: According to the present invention, there is provided a telecommunication Private Wire network comprising: a centralised switch and a number of locations with corresponding end points each of which is connected to said centralised switch by one or more dynamic Private Wires, said centralised switch including means for identifying each location and the end points within that location, a directory for storing details of each location and the corresponding end points, a directory search mechanism and a control means coupled to said identifying means, said directory and said directory search mechanism for receiving an invite from a requesting end point at one of the locations, using the directory search mechanism to identify the receiving end point at a location and the requesting end point at a location in said invite and for establishing a virtual Private Wire between said receiving end point at a location and said requesting end point at a location.

Abstract: An improved public intercom system is described which has a sealed enclosure including an extruded chassis having a front wall and a rear wall. The front wall has an interface panel and a viewing panel mounted within cutouts. A plurality of axially aligned module cover plates supporting system components are mounted over cutouts in the rear wall. The interface includes a speaker, a microphone, a call initiation means, and a camera positioned to acquire images of the area in front of the interface panel. One of the cover plates including an outer surface with heat dissipation protrusions, with a blower located on said rear wall being oriented to direct air across the protrusions to extract heat from the chassis interior. A two-way communication means is mounted on a module plate and programmed to initiate a call to a pre-programmed receiver responsive to a command from the call initiation means.

Abstract: A distributed intercom system that interconnects a hub and various keypad and door zone units having microphones and/or speakers via CAT5 or similar cable having multiple twisted pairs. Audio is carried between all devices over a first audio wire pair, in analog signal format, forming an audio bus. Audio twisted pair acts as a data communication bus for control messages. One or more of receiver units may be active, while only one keypad device can be individually instructed to connect its corresponding microphone circuit to the audio bus. Determination of which unit is selected to be the transmitter occurs under the control of the hub. For example, in a case where a first user wishes to speak to another user in a different room, the first user presses a “talk” button at his keypad, causing that keypad to send out a message on a data communication bus to the hub.

Abstract: Systems and methods which collect information regarding users of controlled environment visitation terminals for identification of one or more parties to a visitation conversation are shown. Identifying information may be provided by various means, such as entry of a PIN, RFID, biometrics, etcetera. Embodiments provide a closed circuit visitation communication system in which a single port of a communication control system is used with respect to a pair of visitation terminals. Embodiments operate to prevent communication between a resident of a controlled environment facility and a visitor while identifying information is collected and verified.

Abstract: A voice communication unit for communicating though a barrier includes an outer audio unit including an outer voice sensing device and an outer voice reproducing device, an inner audio unit including an inner voice sensing device and an inner voice reproducing device, and a signal processing unit which connects the inner/outer audio units and includes a extraneous-sound reducing unit. The input/output sound paths respectively from the outer voice sensing/reproducing devices are separated by a predetermined distance to minimize the interference. In addition to the noise elimination, the invention provides a voice communication unit with weatherproofness by adjusting the size of and disposing the openings for the sound paths. The voice communication unit can be adapted to a two-way communication channel that carry information in both directions, but not at the same time, or to a two-way communication channel that carry information in both directions at the same time.

Abstract: A compact voice information processing device having excellent howling preventing effect, and a wiring system using the same device, which is excellent in function expandability and easy exchangeability, are provided. This processing device has a speaker, a first microphone disposed to face a diaphragm of the speaker, a second microphone disposed outside of an outer periphery of the diaphragm of the speaker, and a signal processing portion for removing an output voice component of the speaker mixed in an output of the second microphone by use of an output of the first microphone. This processing device is preferably used in a wiring system for transmitting information and electric power between plural locations in a building structure.

Abstract: Systems and methods which collect information regarding users of controlled environment visitation terminals for identification of one or more parties to a visitation conversation are shown. Identifying information may be provided by various means, such as entry of a PIN, RFID, biometrics, etcetera. Embodiments provide a closed circuit visitation communication system in which a single port of a communication control system is used with respect to a pair of visitation terminals. Embodiments operate to prevent communication between a resident of a controlled environment facility and a visitor while identifying information is collected and verified.

Abstract: 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.

Abstract: A method and system for interconnecting a telephone system and an intercom system. In one exemplary embodiment, telephone switchgear is connected to a telephone interface which provides separate voice transmit and receive channels. For example, an E&M tie line module can be utilized, which also includes E&M signaling connections for signaling an incoming intercom call to a telephone and for signaling an outgoing telephone call to an intercom. In this exemplary embodiment, an interface circuit is also provided to allow for signal level adjustment along the transmit and receive channels, such that the signal gain of the telephone system can differ from the signal gain of the intercom system. The interface circuit can include a controller which controls a switching device for selectively allowing communication along the transmit and receive channels during periods when communication is desired.

Abstract: An electronic apartment station intercom unit, housed in a vandal proof enclosure, providing a means for a tenant to communicate with apartment building main entrance door panel and means to unlock said door. This unit has a power storage unit that enables this unit to be compatible with existing apartment building switching units. This power storage unit can be in the form of capacitors. In addition, this unit also contains a timer to shut the intercom unit off after a preset period of time.

Abstract: An intercom system for a building or apartment house includes at least one main entrance station 1 which is installed at an entrance or the like of a building or an apartment house, a plurality of residential master stations 2 which are respectively installed inside a plurality of residences in the building or apartment house for receiving calls and talking with the main entrance station 1, a common line 3 which connects the main entrance station 1 and respective residential master stations 2 in parallel, a line power supply 4 which supplies direct current power, for example, DC 24 V to the main entrance station 1 and respective residential master stations 2 through the common line 3, an electronic door lock 5 which is connected to the main entrance station 1 for locking and releasing an entrance door of a main entrance, and a plurality of call switches 6 connected to respective residential master stations 2 and mounted on front doors of respective residences for operation by a visitor.

Abstract: Apparatus for coupling communication signal modulated radio frequency signals between an electrical power distribution line and the electrical power wiring at a customer's premises which includes a first transceiver for transmitting and receiving electromagnetic energy is inductively coupled to the distribution line and a second transceiver for receiving electromagnetic energy from, and transmitting electromagnetic energy to, the first transceiver. The second transceiver is coupled to the customer's power wiring to receive communication signals from, and to supply communication signals to, the customer's power wiring. The electrical power for the first transceiver can be supplied by inductive coupling to the power line and/or a battery, the battery being a back-up source when both inductive coupling and a battery are present.