Abstract: A multiline telephone apparatus with caller ID signal detecting function had an expensive modem for demodulating the caller ID in each one of telephone lines. According to the invention of the present application, each line is provided with a signal detecting circuit for detecting a channel seizure signal or carrier signal in the caller ID signal, and the input line to the modem for caller ID demodulation is changed over depending on the detection output of these signal detecting circuits, so that the caller ID signals of a plurality of lines can be demodulated by one modem only. As a result, a simple and inexpensive multiline telephone apparatus with caller ID signal detecting function is realized.

Abstract: A telecommunications management system that deploys a unique Single-Point-of-Entry and Synchronous Data Base system. The system of the present invention is an integrated suite of system control and application software modules used to manage one or more telephone systems. In addition to controlling commonly used PBX systems, the invention controls adjunct systems such as voice mail and 911 emergency systems. The system of the invention ties its application modules and system control modules through a single point of entry and a synchronized database.

Abstract: An arrangement includes a number of POT CPE customer lines and a plurality of assigned called numbers that are associated with the POT CPE customer lines. The number of assigned called numbers may be greater than, equal to, or smaller than the number of customer lines. The arrangement includes a coupler that is responsive to the plurality of POT CPE customer lines, and includes a number of POT CPE output ports. A storage element maintain a record of which assigned called number(s) is (are) associated with a particular output port, and a switching arrangement, under control of a processor that is coupled to the storage element, controls the switching arrangement. Both hunting and key telephone functions can be implements with the aid of the disclosed coupler.

Abstract: A switching system which can easily reconnect a call to an original call path even if an original call state is disconnected at a time of transferring the call to another outside line or extension is presented. In a state where a call path between an outside line (or first line) and a call center (or second line) is formed, the outside line is connected to an outside line transfer destination (or third line) when a transfer demand from the call center to the outside transfer destination is received and the outside line is automatically reconnected to the call center when the call between the outside line and the outside line transfer destination ends.

Abstract: According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodating a plurality of extension lines each connected to a digital key telephone (DKT) 2 or a standard telephone (STT) 4 as an extension terminal, and having a function of switching and connecting the subscriber line to the plurality of extension lines or the extension lines to each other includes a called party storage means storing, in advance, information representing the correlation between the calling line and the extension terminals 2 and 4 as a called terminal. When a ringing signal arrives from the analog communication network NW, calling line identification information (caller ID) contained in the ringing signal is detected by a calling line identification information interface unit (RCIU) 12.

Abstract: A clock generating circuit generates a clock of a rate corresponding to a Dch rate in response to a specification from the exterior. A counting circuit detects completion of reception of one frame by counting the clock number up to “11” at timing at which a start bit detecting circuit detects a start bit in a serial signal. An S/P converting circuit fetches a serial Dch signal bit by bit in synchronism with the clock, outputs the latest fetched 10 bits in a parallel form and latches eight bits of a real data portion among the output data into a latch circuit at the time when reception of one frame is completed. In parallel with the above operation, a parity calculating circuit and flag/interruption generating circuit set various flags and generate a reception completion interruption.

Abstract: A call processing system is disclosed wherein plural platforms are populated with plural voice boards different resources thereon. Whenever a functional component on a server is requested to start operating for carrying out a particular function as requested by a call, polling software on said server runs to poll from the platforms the availability information of the corresponding resource required for said function requested by the call.

Abstract: According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodating a plurality of extension lines each connected to a digital key telephone (DKT) 2 or a standard telephone (STT) 4 as an extension terminal, and having a function of switching and connecting the subscriber line to the plurality of extension lines or the extension lines to each other includes a called party storage means storing, in advance, information representing the correlation between the calling line and the extension terminals 2 and 4 as a called terminal. When a ringing signal arrives from the analog communication network NW, calling line identification information (caller ID) contained in the ringing signal is detected by a calling line identification information interface unit (RCIU) 12.

Abstract: According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodating a plurality of extension lines each connected to a digital key telephone (DKT) 2 or a standard telephone (STT) 4 as an extension terminal, and having a function of switching and connecting the subscriber line to the plurality of extension lines or the extension lines to each other includes a called party storage means storing, in advance, information representing the correlation between the calling line and the extension terminals 2 and 4 as a called terminal. When a ringing signal arrives from the analog communication network NW, calling line identification information (caller ID) contained in the ringing signal is detected by a calling line identification information interface unit (RCIU) 12.

Abstract: Key telephone system with a private branch exchange that includes a switching unit, stationary key terminals, and at least one of mobile cordless and GSM terminals. The switching unit is adapted to switch calls to the stationary key terminals and to the at least one of the mobile cordless and GSM terminals. The system also includes a first trunk group and a key server system, in which the stationary key terminals are coupled to the switching unit through the first trunk group and the key server system, at least one additional server comprising a memory unit, and a second trunk group having lines associated with each of the at least one of the mobile cordless and GSM terminals.

Abstract: A network interface device that allows a user to simultaneously receive/send a plurality of calls from/to a telecommunications network by multiplexing/demultiplexing the calls on a single telephone line. The network interface device allows for the provisioning of an extra line on demand to the user for incoming and outgoing purposes. The network interface device further selectively connects the calls with a plurality of devices in accordance with each devices availability and the stored preferences of the party receiving the call. When a call ends, the network interface device terminates the temporary virtual line assignment.

Abstract: According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodating a plurality of extension lines each connected to a digital key telephone (DKT) 2 or a standard telephone (STT) 4 as an extension terminal, and having a function of switching and connecting the subscriber line to the plurality of extension lines or the extension lines to each other includes a called party storage means storing, in advance, information representing the correlation between the calling line and the extension terminals 2 and 4 as a called terminal. When a ringing signal arrives from the analog communication network NW, calling line identification information (caller ID) contained in the ringing signal is detected by a calling line identification information interface unit (RCIU) 12.

Abstract: A computer usable medium having software embodied therein for managing at least one telephone system having a PBX switch and database and at least one adjunct system and database. The software includes a method for creating and managing a master database for maintaining a copy of information contained in each PBX and adjunct system database, and collecting SMDR data from the PBX switch and converting the data to CDR data based on the information in the master database. Also provided is a storage device embodying a program of instructions to perform method steps for converting a record of a phone call collected from a PBX switch to 10 digits.

Abstract: A telephone device 100, integrated with a telephone or as a telephone add-on device, improves receipt and processing of network information such as Caller ID from conventional telephone networks. A comparator 103 decodes incoming Frequency Shifted Keying (FSK) signals by transforming transform the FSK signal into a square wave signal with corresponding periodic pulse widths. The transformed signal is sent to a microcontroller 105. The microcontroller is preprogrammed to further decode the transformed signal to obtain digital data representative of Caller ID information. Multiple devices connected to the same telephone line 410 may receive off-hook Caller ID simultaneously by selective disablement of an acknowledgment tone transmission through use of a switch 440. Configurable function keys 471 on a user interface 430 controls other network services, such as voice mail, regardless of different command code formats utilized by various network service providers.

Abstract: System-atypical plug-in locations are made available in a small system of an overall system series also comprising a mid-sized and, potentially a large system. These locations are supplied with signals in a different way than the system-specific plug-in locations. These signals and their handling by the system control are available in and of themselves in the corresponding system but are utilized in some other way. Additional plug-in locations are thus fashioned in a way that plug-in assemblies from the mid-sized and large systems can be utilized as peripheral assemblies. Solutions that are rarely applied can thus be realized in an economically justifiable way without complicated additional development. Performance features such as, for example, cordless integration, from a large system can thus be made directly available in a small system.

Abstract: This invention enables the key telephone system to send a busy tone to a party calling on a main extension number when a telephone call to the main extension number is received when a pseudo extension number is in use. The receiving mode is memorized in the memory of the main unit. When a telephone call to the main extension number is received when the pseudo extension number is in use, a busy tone can be sent to the calling party on the main extension number. According to this invention, the calling party thus knows that the key telephone set, which is the destination of his call, is busy.

Abstract: This invention relates to a key telephone apparatus which includes a key telephone main unit which accommodates a plurality of extension terminals each having a display via extensions and is connected to a network via an office line, and has an ACD function of forming a group of the plurality of extension terminals, and selectively distributing an incoming call received from the network to the plurality of extension terminals belonging to the group to receive the incoming call.

Abstract: A communicating apparatus for performing a communication through a plurality of communication channels including a control channel is constructed by a detection unit to detect a hold request and a transmission unit to transmit a channel switch command to a terminal in a waiting state by the control channel. The transmitting unit transmits the channel switch command such that the terminal waits and responds to a held communication in a state where the terminal is switched from the control channel during a holding state.

Abstract: A multiple-service offering communication terminal and a multiple-service offering apparatus comprise a multiple-service common judgment control unit for judging information on a communication failure or the occurrence of a failure which is provided with a multiple-device informing function to inform a user by controlling accessory terminals according to information to improve the efficiency of the way of informing a plurality of devices of a failure or the like and the operation efficiency of the user.

Abstract: A telephone switching system 10 comprises a plurality of physical ports 20, and switches removable terminals based on predetermined connection information, wherein such connection information is arranged to be capable of being stored and rewritten in a RAM 60 by inputting from the terminal. When a physical port connecting to a terminal interface 30 is reconnected from a first terminal to a second terminal, a CPU 40 rewrites the connection information stored in the RAM 60 so that an extension number the user desires is stored for the physical port reconnected with the terminal.

Abstract: An apparatus for use in an advanced intelligent network (AIN) having a service control point (SCP) . The apparatus includes a number of functional components "abstracted" into a control hierarchy including a rules engine, one or more enhanced service applications, one or more intelligent peripheral controllers, and a set of intelligent peripheral adapters. The rules engine supports one or more rules for use in provisioning an enhanced service according to the enhanced service application. Each enhanced service (ES) application translates each rule required by the application into a set of one or more application level service primitives for its associated IPC. The IPC, in turn, translates each application level service primitive into a set of directives to control each intelligent peripheral adapter (IPA) connected to the IPC. At the lowest level of the hierarchy, an IPA translates each IPA directive into actual hardware instructions for controlling a particular switch or resource.

Abstract: A digital telephone (60) comprises send equipment (40) and receive equipment (50), coupled via a signal splitter/combiner (61) onto a digital telephone line (62) for communication with a remote party (90). The send equipment (40) comprises an A-law map (12) and a mu-law map (43). Receive equipment (50) comprises an inverse A-law map (14) and an inverse mu-law map (52). Maps (12,43) are selectable by the user (80). Similarly, inverse maps (14,52) are also selectable by the user (80). Receive equipment (50) may further comprise an un-quick-fix module (55) for removing unwanted insertions of quick fixes (25) inserted into the telephone line (62) by international telephone companies. Receive equipment (50) may further comprise a digital signal processor (57), computer (56), a set of pre-stored templates (58) corresponding to possible incoming telephone characteristics, and a caller parameter decipher module (51).

Abstract: A key telephone system with a database dynamically sets a least cost route based on an access frequency distribution value of the database. For that purpose, the key telephone system evaluates access frequency distribution values of records in the database, indexes the records in order of the access frequency distribution value, and creates an index table. Then, the key telephone system searches the database based on the index table by a binary searching. The index table is a digit comparison table.

Abstract: The invention has a purpose of making the operability and functionality of a simultaneous all together communication (a broadcasting communication) good. A dealing communication system of the embodiment provides with COT 1-2 to be called with a public line, DBDLIN 1-7 connected to BD 1--1 and CLU 1-6 accommodating and being connected to COT 1-12 and DBDLIN 1-7.

Abstract: A multiple subscriber implementing method in a key phone system having an integrated service digital network trunk card connected to a digital telephone line, a public switched telephone network trunk card connected to an analog telephone line and an internal memory containing a plurality of logic ports and registered numbers each indicating a corresponding called subscriber terminal, including a call reception routine of connecting an incoming call containing a called subscriber number to a specific port of a corresponding called subscriber terminal when the incoming call is received through the digital telephone line and the called subscriber number corresponds to one of the registered numbers contained in the internal memory; and a call transmission routine of registering a called subscriber number and transmitting an outgoing call when the digital telephone line is seized by a private line subscriber.

Abstract: A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a first telephone line. In response to a first signal, the coupling between the first audio input device and the first telephone line is modified, and the second audio input device and the second audio output device are coupled to a second telephone line.

Abstract: This invention relates to a key telephone apparatus which includes a key telephone main unit which accommodates a plurality of extension terminals each having a display via extensions and is connected to a network via an office line, and has an ACD function of forming a group of the plurality of extension terminals, and selectively distributing an incoming call received from the network to the plurality of extension terminals belonging to the group to receive the incoming call.

Abstract: A device and method for recovering data in a file system. The method includes the steps of performing a given function that effects a change in a control structure of the file system and concurrently saving data relevant to the function in a state as data for a recovery, and recovering the interrupted function by using the data saved for a recovery, to prevent the loss of file data and maintain the consistency of the file system. The device includes a flash memory to store the control structure.

Abstract: A communication interface circuit in an aircraft entertainment system uses a single Universal Asynchronous Receiver and Transmitter (UART) for sending and receiving data to and from a number of devices. The UART is coupled to a number of transceivers each having a transmitter buffer and a receiver buffer. A circuit is used to enable and disable the receiver buffers. A masking element is coupled between the receiver buffers and the UART to mask off the data from the disabled receiver buffers allow only the data from the enabled receiver buffer to go to the UART. With this communication interface circuit, the amount of hardware is significantly reduced.

Abstract: A power failure shunting office line restoring circuit includes: a first relay having an office line tip port connected to a common port for connecting the tip port of the office line to a separate emergency telephone or a key telephone office line accommodating circuit in accordance with a first relay control signal; a second relay having an office line ring port connected to a common port for connecting the ring port of the office line to the emergency telephone or the key telephone office line accommodating circuit in accordance with a second relay control signal; a controller for generating the first and second relay control signals according to a power supply state or emergency telephone use state detection signal; first and second relay drivers for driving the first and second relays in accordance with the first and second relay control signals generated by the controller, and a detector connected to the first relay for detecting the use of the emergency telephone and for outputting the use state detect

Abstract: A system and method of providing site-to-site compatibility of telecommunications stations allow users to transparently relocate among a number of different stations, while the apparent locations of the users remain fixed. Co-ordinator modules of a private branch exchange (PBX) establish peer-to-peer communications with station-based co-ordinator modules to provide automated routing to the station at which the particular individual is located, while leaving the apparent location of the user fixed at a designated station of the PBX. In one embodiment, the compatibility of stations allows the user to operate from a home-based station, while the apparent location of the user to any calling and called parties is an office-based station that is dedicated to the user. In a second embodiment, the compatibility allows the user to operate from any one of a variety of office stations, while the apparent location remains fixed at one of the office stations.

Abstract: A multi-line interface device routes incoming and outgoing communication signals between one or more service providers and one or more customer stations. The device comprises one or more line access modules each for establishing communication between an interface device and one or more service providers, a first of the one or more line access modules in communication with a first service provider and a second line access module in communication with a second service provider. Additionally, one or more station access modules is provided for establishing communication between the interface device and the one or more customer stations, each of the one or more station access modules connected with a dedicated customer station. A bus switching device is provided for connecting signals between any of the line access modules and station access modules under the control of a control device.

Abstract: In an incoming call communication service using key groups to be hunted provided through a switching system, there is provided a master terminal for a group formed of a plurality of slave terminals and a call to the master terminal is connected to a call-acceptable slave terminal in the group. In this case, certain slave terminals in the group are concentrated with the other certain slave terminals without canceling the communication links at slave terminals in terminating connection. The state of use of slave terminals after slave terminal concentration is notified to the master terminal.

Abstract: A method for providing man-to-machine communication during an on-line conversation in a keyphone system is effected by: determining whether man-to-machine mode key data is input from a terminal of a user connected to the keyphone system while the terminal is in an off-hook state and the user of the terminal is engaged in the on-line conversation with a remotely located service center representative. Enabling the man-to-machine communication in order to implement one or more predetermined functions of the terminal in response to input of the man-to-machine mode key data. Receiving instructions from the service center representative as to how to implement the one or more predetermined functions. Providing input of man-to-machine code number data from the terminal based on the instructions to implement the one or more predetermined functions, and terminating the man-to-machine communication when the man-to-machine mode key data is again input from the terminal.

Abstract: A telephone apparatus includes a phone jack arrangement (299) providing an interface to land lines from the central office and other telephone apparatuses. Phone jack arrangement (299) comprises a phone jack (306) having inner conductors (420, 422) coupled to outer conductors (406, 408) of a phone jack (304), and outer conductors (424, 426) coupled to inner conductors (402, 404) of phone jack (304). Condition detectors (232, 234) detect whether phone lines of phone line circuitry (270) are connected to land lines, and microprocessor (212) may operate the telephone apparatus or configure base station user interface (126) accordingly. A two-line operating mode may select one of the phone lines for operating use upon detection of a predetermined condition from condition detectors (232, 234) or ring detectors (246, 248). Thus, a multi-line telephone apparatus operates flexibly according to different phone line connections.

Abstract: A voice level controller comprises a discriminator for determining whether speech is transmitted through an analog line or not, and a control circuit for controlling a speech level in accordance with the output of the discriminator.

Abstract: A voice services equipment includes a voice services module with a plurality of audio ports and a switching device responsive to an interactive control signal from a call control processor of the module to provide a selectable switching function between the audio ports of the module and a plurality of connections to a telephone network. The VSE is user programmable and includes a plurality of connections for incoming calls via an interface and a plurality of connections for outgoing calls via an interface. The switching device can switch between selected combinations of incoming call connections, outgoing call connections and the audio ports of the module. The switching device can thus connect a caller to a called party via the incoming and outgoing connections, and keep monitoring the call for billing purposes or in order to provide a follow-on call.

Abstract: A key telephone system having user-friendly electronic directory function in which dialling numbers more than the number of abbreviated dialling numbers can be registered and the number of digits of abbreviated dialling number is maintained to a small number by treating separately an abbreviated dialling data and other directory data upon registration of data. Further, the content of a retrieved directory data can be registered as an abbreviated dialling number. In the system, a necessary number of data can be registered in the directory, and calling operation using an abbreviated dialling number can be made with a fixed number of digits of abbreviated dialling number regardless of the number of abbreviated dialling numbers. Further, registration of abbreviated dialling number can be performed effectively.

Abstract: An electronic patching system includes a first plurality of ports connected to the terminations of a plurality of telephone and data lines from the utility central office, and a second plurality of ports wired to a plurality of telecommunications devices. Both pluralities of ports are coupled to inputs of a controlled switching matrix, which connects each of the telecommunications devices to one or more of the telephone and data lines. The switching matrix is operated by a programmable logic array that directs the matrix to establish and maintain the desired connections between the telephone equipment and the telephone and data lines, computer network lines, and the like. The switching matrix includes a high voltage switch portion to handle analog telephone instruments. An algorithm for controlling the programmable logic array is created using a personal computer, and stored in memory.

Abstract: A communication system of the present invention includes an exchange connected to a plurality of subscriber terminals. The exchange includes a display data management section which includes first and second tables. The first table indicates types of messages and is used to refer to the second table. The second table stores data of display messages classified for individual message types and is retrieved with a message number. When a calling party depresses a message displaying function key and then depresses a message number on a subscriber terminal, the exchange recognizes that a message display request has been input. The exchange reads out data associated with the display message from the display data management section, and causes a terminal display section of the calling party terminal to display the data and further causes a terminal loudspeaker section to output speech to allow the calling party to confirm the display message.

Abstract: A multi-station telephone system having a telephone control module (24) based user site network is provided. The system includes a plurality of electronic devices (26) located at a user site (12). A site telephone line (20) is coupled to a telephone line (16) provided by a telephone network (10) and extends through the user site (12). A plurality of telephone control modules (24) are coupled to the site telephone line (20) and to associated electronic devices (26). The telephone control modules (24) are operable to monitor telephone line communications (32) on the site telephone line (20) and to monitor associated electronic devices (26). The telephone control modules (24) are also operable to isolate associated electronic devices from and couple them to the site telephone line (20). Each telephone control module (24) is further operable to communicate with other telephone control modules (24) to form a user site (12) network for providing control of telephone line communications.

Abstract: A switch system for switching extension numbers, which can be changed by a subscriber having the extension number of the BBG (Basic Business Group) without the operation by a switch operator, is connected with a plurality of telephone sets (TEL) which belong to the BBG (Basic Business Group). An access code and an extension number are sent from one telephone set of the BBG to the switch. A former extension number of the one telephone set is deleted by the switch system and is registered in the switch to change the former extension number of the one telephone set to the extension number sent from the one telephone set. The switch system has a subscriber circuit section, a digital switch module and a central processing section including a central processor, a main memory and a file memory.

Abstract: A method of operating a multi-line telephone apparatus includes, when a phone line switch (140) is actuated, taking a phone line off-hook when the line is on-hook and bringing the phone line on-hook when the line is off-hook. When the phone line is off-hook and a hold switch (164) is actuated, a hold condition is placed on the phone line when the line is not on hold and removed when the line is on hold. When a phone call is established on a first phone line and a conference switch (160) is actuated, a second phone line is brought off-hook and a conference call connection is established. A common conventional method of making a conference call, which includes actuations of hold switch (164) and phone line switches (140, 142), is retained.

Abstract: There is disclosed an apparatus for providing automatic call distribution and auto-attendant capabilities to a digital telephone switch not having those capabilities. Digital interface circuitry is provided to emulate the appearance of a digital telephone connected to the telephone switch. The telephone switch is programmed to automatically route incoming calls to the interface circuitry and also to transmit the status of other digital telephones connected to the telephone switch to the interface circuitry. A processor is provided which determines the busy/idle state of other telephones connected to the switch, and transmits to the telephone switch a transfer command which re-routes the incoming telephone call to an idle telephone. Storage circuitry is provided for storing a user-defined algorithm for distributing incoming calls to the available digital telephones.

Abstract: Devices, such as a mouse and a keyboard, a monitor of a PC, a microphone and a speaker provided on the extension board, and a sound input/output device of the sound input/output unit which is connected to the extension board are utilized as a display unit, an operation unit, and a sound input/output unit of the key telephone, respectively, by interchanging control information between a central processing unit of a PC main device and a control unit of an extension board which includes an exchange circuit, an information processing circuit, an I/F circuit, and a telephone circuit for an extension line. Accordingly, it is possible to provide an information processing and communication apparatus, capable of controlling at least one external line and a plurality of extension lines, with superior operability, which has combined functions of a PC and a key telephone system.

Abstract: A telephone terminal has a plurality of handsets and at least one button to input a demand for starting an outgoing call or receiving an incoming call. The terminal includes a demand recognition unit for recognizing the input demand through the one button. The terminal also includes a search unit for searching for handsets in the idle status when the input demand has been recognized. The terminal further includes a select unit for selecting one of the searched handsets that are in the idle status as a selected handset. The terminal also includes a call connection unit for controlling a call connection of the operation corresponding to the input demand, when a handset in the idle status has been selected. The terminal still further includes a nullification unit for nullifying the input demand when no handset in the idle status has been selected.

Abstract: A remote supervisory control system is provided in which a master system performs monitoring and control of a plurality of slave systems, maintaining the fine control capability of the past, while enabling implementation with the minimum memory capacity. The master system is connected, via channels, to a plurality of slave systems, each of which has a plurality of individual control points in its purview. The plurality of individual control points are grouped into groups of individual control points having the same attributes, prescribed operations being performed on the status information of all individual control points within each group, the results of these calculations being taken as the status information of a representative control point. This status information is collected in memories located within the master system.

Abstract: A method of improving the speed of a computer communication interface module in a key telephone system is disclosed including the steps of: (a) detecting if control data transmission/reception interrupt occurs or not; (b) checking start flag in control data; (c) performing computer communication data polling at interval less than half of a control data processing clock; (d) receiving or transmitting one byte of computer data during the period of less than half of the clock, if there is an event of computer communication data after the polling; and (e) checking an end flag, finishing the process if there is an end flag, and carrying out processes repeatedly from step (c) if there is no end flag.

Abstract: A system for distributing electronic information signals throughout a structure, particularly a residential dwelling, which adapts a plurality of electronic information signals into a signal which can be received by one or more information utilizing devices which are located throughout a structure. In accordance with particular aspects of the present invention, an improved structure and method of installing a plurality of communication cables in a wall adjacent to an existing electrical box attached to a building member is provided. An apparatus for adapting a multi-line telephone signal distribution hub for use with a single telephone line, or two telephone lines, is also included which allows the wiring for an internal KSU/PBX telephone system to be installed immediately and a single telephone line readily interfaced with a multi-line telephone signal distribution hub while a KSU/PBX control box and additional telephone lines from the telephone service utility can be readily connected at a later date.

Abstract: A virtual private line key telephone system is provided. The system includes a console including a plurality of line keys each associated with a party that can be reached via a switched trunk line. A look-up table means associates the line keys with the telephone numbers of the associated parties. A communication path is established from the console to one of the trunk lines. Signals are sent to the central office via the selected trunk line corresponding to the telephone number in the look-up table means associated with a line key that is actuated to place a calls. The telephone number of incoming calls are determined and compared with telephone numbers in the look-up table. Thereafter the line keys which are associated with the incoming calls are determined. The incoming call is coupled to the console when a line key associated with the incoming caller is actuated.