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 multi-line modem interface circuit includes a processor and a sensing circuit coupled to the processor. The sensing circuit is operable to identify a status of one or more external lines and communicate the status to the processor. A control circuit is coupled to the processor, and the processor is operable to automatically configure a line connection configuration for either incoming or outgoing voice or data communications in accordance with programmed, user-defined preferences associated with the processor. The interface circuit is operable to automatically monitor a line to determine if it's ringing, determine whether it's allowed and couple the line to the modem for potential answer. The interface circuit line monitoring is non-invasive and keeps the modem from interfering with calls in progress.

Abstract: An integrated communication system for voice and data connecting an Ethernet LAN to an external communication network by utilizing a conventional communication system. An interface connected to the Ethernet LAN and transferring a voice signal at a data link level without processors is stored in a personal computer. An ISDN voice interface for connecting the personal computer to the external communication network with a voice channel is connected to the LAN. The input/output data of the ISDN voice interface and various routers performing data communication on the LAN is multiplexed/demultiplexed in a plurality of channels by an ADSL multiplexer. The input/output data of the multiplexer is connected to the external communication network through an access network having a user interface.

Abstract: A method and apparatus for converting an analog voice channel signal and a 4-wire digital signal into a single 2-wire digital signal which can be transferred over a single twisted pair line. In one aspect, the method comprises the steps of converting the analog voice channel signal into a first binary signal, converting the 4-wire digital signal into a second binary signal, combining the first binary signal and the second binary signal into a higher rate binary signal, and converting the higher rate binary signal into a 2-wire digital signal which can be transmitted to another location over a single twisted pair line. In another aspect, the method comprises the steps of converting a 2-wire digital signal to a higher rate binary signal, separating a first binary signal and a second binary signal from the higher rate binary signal and converting the first binary signal into an analog voice channel signal, and converting the second binary signal into a 4-wire digital signal.

Abstract: A system and a method for collecting and presenting subscriber number information for a calling subscriber sent by CTI system signalling over a stationary telecom network. The system utilizing the method includes for each individual telephone line a line processor (10-15) with a memory (4-9) for buffering. The memory is over a bus (3) interconnected to a central processor or a main processor (1) for collection of the incoming number information of each line. Additionally the system includes a unit for conversion of incoming CTI system signalling at each line processor into binary code constituting number information, each line processor (10-15) further including a number of subfunctions for handling and forwarding of number information received, and each line processor having a unique identification being forwarded together with number information for presentation.

Abstract: The voice mail system is embodied on a card (VxC) designed to be inserted into the PBX cabinet and communicate with the PBX processor via the backplane of the system. The VxC card includes a dual port RAM for providing two way communication between the VxC and the PBX. Through the allocation of memory areas, and control commands corresponding to the respective allocated areas, the PBX processor and VxC can communicate via the dual port RAM interface over the PBX backplane. The use of the dual port RAM communication over the PBX backplane eliminates the need for asynchronous RS-232 signaling to establish control and implement voice mail functions to a PBX system.

Abstract: A method and apparatus to identify/process dynamically telephony data over each of a set of channels. A system has one or more ports providing a set of channels for transfer of various types of (telephony) data (e.g., voice, fax, data modem, video teleconferencing, etc.). Upon detection of a data transfer request (e.g., a “call”) on one or more channels, the system dynamically identifies the type of data as voice, fax, data modem, etc., on the channel(s) and executes appropriate routines to process and route the data.

Abstract: A multipoint conferencing system communicates with a first remote digital simultaneous voice and data (DSVD) modem and a second DSVD modem. The multipoint conferencing system has a first DSVD modem adapted to communicate with the first remote DSVD modem and a second DSVD modem adapted to communicate with the second remote DSVD modem. Each DSVD modem has an analog to digital converter and a digital signal processor coupled to the analog to digital converter for receiving data from the remote DSVD modems. The system also has a bridge coupled to the first and second DSVD modems for transferring data between the first and second remote DSVD modems.

Abstract: A bi-directional data communication system using inverse multiplexers for transmitting and receiving data at high-speeds using regular analog channels. The inverse multiplexer splits a high-speed digital signal into low-speed digital signals that are input to analog modems. The analog modems modulate the low-speed digital signals into low-speed analog signals for transmission over the analog channels to the public switched telephone network. At the remote end, the data carried by the analog channels is reverse inverse multiplexed into a high-speed digital signal by an inverse multiplexer operating in a reverse inverse multiplexing mode.

Abstract: Methods and associated structures and systems for managing the exchange of data among secured systems via various transport media and techniques. The transport manager of the present invention manages the transport of data between two systems using a variety of transport media while assuring robust, reliable exchange of such data. More specifically, the transport media managed by the present invention include media and methods which are not precluded from data exchange by security measures implemented on the source and destination systems. Such transport media may include email network communication, file transfer protocol network communication, hypertext transfer protocol, and manual exchange via magnetic or optical media. Each desired exchange identifies a particular source and destination computing system operable in accordance with the present invention.