Abstract: A transmission apparatus is capable of transmitting a high-speed modem signal. It has at least two types of transmission schemes: one uses a clear channel that can transmit a high-speed modem signal; and the other is a conventional 32-kbit/s or 40-kbit/s ADPCM scheme implemented by a coding section 25. When an ANSam signal detector detects an ANSam signal according to the V.8 protocol from an input signal, a transmission assignment processor instructs a BC (bear channel) bit assignment section to switch the transmission scheme to the higher quality transmission scheme using the clear channel.

Abstract: Data is transferred between a plurality of networks which are not synchronized in clock with each other, without creating either an overflow or an underflow. Data output from a first DVCR is transferred to a second DVCR via a first IEEE-1394 serial bus, a first ATM/IEEE-1394 data transfer apparatus, a first UNI, a first ATM network, an NNI 101, a second ATM network, a second UNI, a second ATM/IEEE-1394 data transfer apparatus, and a second IEEE-1394 serial bus. The second ATM/IEEE-1394 data transfer apparatus stores data in a buffer for each flow and deletes or inserts an empty packet depending upon the amount of data stored in the buffer so as to prevent an overflow and an underflow. A deviation of a time stamp caused by the insertion or the deletion of the empty packet is gradually corrected.

Abstract: Systems and methods by which voice/data communications may occur in multiple modes/protocols are disclosed. In particular, systems and methods are provided for multiple native mode/protocol voice and data transmissions and receptions with a computing system having a multi-bus structure, including, for example, a TDM bus and a packet bus, and multi-protocol framing engines. Such systems preferably include subsystem functions such as PBX, voice mail and other telephony functions, LAN hub and data router. In preferred embodiments, a TDM bus and a packet bus are intelligently bridged and managed, thereby enabling such multiple mode/protocol voice and data transmissions to be intelligently managed and controlled with a single, integrated system. A computer or other processor includes a local area network controller, which provides routing and hub(s) for one or more packet networks. The computer also is coupled to a buffer/framer, which serves to frame/deframe data to/from the computer from TDM bus.

Abstract: A method of combining voice and data for transmission in a single digital wireless telephone call comprises the steps of establishing a circuit-switched data call connection from a mobile phone to a destination, routing the call through a pair of modems connected in-line with the call connection path, multiplexing non-voice digital data with vocoded voice digital data to form a multiplexed digital data stream, and sending the multiplexed digital data stream from the mobile phone to the destination through the pair of modems.

Abstract: The invention proposes a method of generating, from an input transport stream of a first type and from data of a second type, an output transport stream of said first type which notably carries said data of said second type.

Abstract: This invention discloses a system for transmission of audio content to a telephone, the system including an audio stream navigation functionality operable by using a telephone user interface and enabling a user to select audio data to be heard by the user via said telephone, an interactive voice response unit operative in response to an input from said telephone user interface operating said audio stream navigation functionality and a transcoder operative in response to an input from said interactive voice response unit for providing audio data, from an audio source remote from said transcoder, to said interactive voice response unit for listening by said user via said telephone.

Abstract: A telephone communication system is implemented to enable data communication and ring signaling to coexist on a subscriber loop. The communication system transmits data during the silence intervals of a ringing cadence and withholds the transmission of data during the occurrence of a ring signal. To ensure the transmission of reliable data, the communications system allows ring signals to occur and retransmits any interrupted data during the silence intervals between the ring signals. In another embodiment, the transmission of reliable data is ensured by delaying the ring signals until the data currently being transmitted is successfully and reliably received. Accordingly, in either embodiment, the reliability of data communication during the occurrence of a ringing cadence is preserved, and, therefore, data communication is allowed to coexist with ring signaling over a subscriber loop.

Abstract: A method of using a first communications device (2), such as a mobile telephone, together with at least one other communications device (27), such as a telephone, comprises the steps of playing back audio signals in the first communications device (2), transmitting the same audio signals to the other communications device (27), and playing back the audio signals in the other communications device (27). By transmitting the audio signals played back in the first communications device to the other device and playing them back there, shared audio listening is achieved and in this way the communications devices can be used also for the shared listening to e.g. music. Thus it is possible for two persons present at different locations to listen to the same audio signals simultaneously or at least almost simultaneously.

Abstract: An architecture, as well as various components, of an asynchronous transfer mode (ATM) subscriber access multiplexer (ASAM) system can be implemented using an XDSL (x-Digital Subscriber Line) using DMT (Discrete Multitone) or CAP (Carrierless Amplitude Phase Modulation) between a plurality of subscribers and a corresponding plurality of line termination equipment in a shelf that also includes network termination equipment for connection to an ATM network. The line termination and network termination equipment are interconnected by a bus internal to the shelf for providing subscriber access. Separate lowpass filters are provided at each end of a twisted wire pair between the shelf and each subscriber equipment. A shelf can be used as a hub for connecting to a remote shelf that includes the line termination equipment for connection to subscribers.

Abstract: A method and apparatus for service multiplexing over telephone networks which employ bridged tap construction to allow the simultaneous delivery of different services to physically separated subscribers over a shared single pair of wires. Service is provided to one or more subscribers by connecting them to an open-circuited branch or directly with the working portion of the shared line. Service filters are used at appropriate locations in the network topology to couple or isolate the different communication channels. The wire pairs are used to simultaneously carry different services to physically separated subscribers, i.e., a portion of a common line carries one service to one location and a second service to another location. Telecommunication services are partitioned to occupy separate frequency bands in the spectrum of the transmission line using frequency division multiplexing (FDM) techniques.

Abstract: A method for conveying over telephone lines digitized voice signals simultaneously with digital data signals by means of a communication system, having a transmitter having a discrete multi-tone unit yielding a plurality of carriers of different frequency, several of which are assigned to the voice signals and others to the data signals. The carriers for transmitting voice are selected on the basis of their signal-to-noise ratio characteristics, which carriers can be reallocated dynamically to data transmission. A first tone ordering circuit assigns data streams to data carriers, and a second tone ordering circuit assigns voice streams to voice carriers. Each carrier is modulated by QAM modulation, the data carriers by a sequence of QAM symbols representing data and the voice carriers by a sequence of QAM symbols representing voice. QAM modulation is carried out by a first constellation encoder that modulates the data carriers and a second constellation encoder that modulates the voice carriers.

Abstract: An apparatus and method for supporting a PC communication and internet service while supporting D-CATV and VOD services by using a settop box connected to a network for D-CATV and VOD services, without a separate communication equipment. The apparatus includes a PC interface installed in the settop box to communicate with the PC; and an internet gateway prepared at a head end of the D-CATV to provide an internet service channel between a backbone internet and a D-CATV subscriber. The settop box includes a controller for analyzing a previously designated VC (Virtual Channel) cell for SLIP (Serial Line Internet Protocol) within of data received from the network and for transmitting the VC cell together with a SLIP header to the PC. The controller also is for separating the SLIP header from the data received from the PC and for transmitting to the network the designated VC cell together with an IP (Internet Protocol)-over-ATM (Asynchronous Transfer Mode) header.

Abstract: An odd-order low-pass microfilter is disclosed for being interposed between a home telephone wiring network and a POTS, or voice-band, device to separate voice-band signals from higher frequency signals, such as ADSL signals and home networking signals. The filter topology is substantially symmetric so that the filter is reversible in that either end of the filter may be directly coupled to the home telephone wiring network without impairing high frequency signal performance or the filter characteristic of the filter. In one embodiment, the filter is a three-pole filter with a single capacitor disposed between a pair of coupled inductors. Each of the coupled inductors advantageously has an interwinding capacitance over about 100 pF to improve the filter frequency response without increasing the cost of the filter. In another embodiment, the filter is a reversible three-pole filter with a single capacitor disposed between first and second pairs of uncoupled, or discrete, inductors.

Abstract: A simplified version of a defined GPRS/EDGE Class A mobile station that incorporates transmission and reception of GPRS/EDGE data during discontinuous transmission and reception modes on a dedicated traffic channel, and that includes a mechanism for streaming GPRS/EDGE data to and from a packet-switched channel, along with optional association of a voice timeslot with one or more GPRS/EDGE data timeslots. GPRS/EDGE packet data and circuit-switched voice data are simultaneously transmitting along a dedicated GSM voice traffic channel by transmitting the GPRS/EDGE packet data between occurrences of circuit-switched voice data and silence descriptor frame data along a dedicated voice traffic channel.

Abstract: A network system comprises an exchange for accommodating a plurality of terminals, an IP network and a connecting device. When any one of the terminals sets a call through the IP network, the exchange notifies the connecting device of a priority class corresponding to the terminal. The connecting device saves a service type corresponding to the notified priority class. T he connecting device, when transmits packets comprising data from the terminal after the call is set, set the saved service type to the packets. Thereby, the priority control according to the set service type is performed in the IP network.

Abstract: In a publically switched telephone network (PSTN), a method and a system for simultaneously and independently multiplexing voice and non-voice data over a single, commonly shared PSTN access line. This is accomplished by packetizing the voice and non-voice data into minicells, and then multiplexing the minicells into a single data stream for transportation across the commonly shared PSTN access line. Once the minicells containing either voice or non-voice data have been transported over the single, commonly shared PSTN access line, the data is simultaneously and independently routed to distinctly different end-users according to the routing information stored in the header portion of each minicell.

Abstract: The present invention provides an effective way for Telecom operators to provide ADSL service to customers who are receiving POTS service over a pair gain system or who are connected to ISDN. According to one embodiment of the invention, an ADSLNDSL (Very High Speed DSL) splitter is integrated in the remote terminal of a pair gain system or in the NT1 (Network Termination 1) of an ISDN BA (Basic Access). Therefore, no extra box on the house and no extra truck roll is required when the customer orders ADSL service. Integrating the splitter makes the telephone line upwards compatible with UADSL since UADSL can be directly connected to an analog telephone line. According to another embodiment of the invention, both the splitter and ADSUUADSL modems are integrated in the remote terminal of a pair gain system or in the NT 1 of an ISDN BA. The splitter in the telephone company location may also be integrated in the central office terminal (COT) of the pair gain system.

Abstract: A modem for use in Digital Subscriber Line communications transmits and receives data over the local subscriber loop in common with voice information over the loop, while avoiding the need for voice/data splitters. The modem responds to disruptions associated with “disturbance events” such as on-hook to off-hook transitions and the like by rapidly switching between pre-stored channel parameter control sets defining communications over the loop under varying conditions. In addition to changing parameter control sets responsive to a disturbance event, the modem may also change transmission power levels and other system parameters such as frequency domain equalizer characteristics. Further, provisions are made for reduced bandwidth communications under selected conditions.

Abstract: A system for digitizing voiceband signals at the remote terminal (20) of a Digital Subscriber Line (DSL) connection and embedding the digitized voiceband component into an active DSL data stream using a DSL modem (24). Voiceband transmissions between the remote terminal (20) and the central office call switching equipment (1) occur in the analog domain when the DSL modem (28) is OFF and in the digital domain when the DSL modem (28) is ON with the digital voiceband signals transmitted over a DSL link. Preferably, the remote terminal (20) can drive a real analog telephone (30) by providing battery feed, ring-trip detection, off-hook detection and ringing generation (60) In-house 4-wire lines pairs (21, 23) are configured between the modem, telephones and computer or home network to permit all digital transmission from the subscriber to the central office.

Abstract: A mobile telecommunication system, which transmits a sound signal from a first mobile telecommunication terminal to a second mobile telecommunication terminal over a channel with a predetermined number of bits, includes a first base station to which the first mobile telecommunication terminal and a third terminal which transmits a non-sound signal are connected, and a second base station which is connected to the first base station via a digital network. The second mobile telecommunication terminal is connected to the second base station. The first mobile telecommunication terminal includes a unit which codes and compresses the sound signal to convert the sound signal into a compressed sound signal, and a unit which transmits an answer signal in response to receiving a notice signal which informs that the second mobile telecommunication terminal is the mobile telecommunication terminal.

Abstract: A multipoint digital simultaneous voice and data (DSVD) conferencing system includes a plurality of local DSVD modems to communicate with a plurality of remote DSVD modems and a bridge to transfer data and digitized voice signals among the plurality of remote DSVD modems by way of the plurality of local DSVD modems. A plurality of simultaneous conferencing connections are maintained between the plurality of local DSVD modems and the plurality of remote DSVD modems. The system support a multipoint DSVD conferencing session connecting the plurality of remote DSVD modems.

Abstract: Methods and apparatus for enabling simultaneous transmission of voice and data signals over a single subscriber line. Signals are time division multiplexed preferably using an ISDN access format such as the Basic Access or Primary Rate formats, but are treated separately at the exchange. Subscriber equipment combines signals from local computer and telephone devices for separation at corresponding exchange equipment. Similarly the exchange equipment combines signals from one or more packet networks and the public telephone network for separation at the subscriber equipment. Data signals are therefore passed by the exchange directly to or from a packet switched network while voice signals are passed directly to or from a telephone switched network. Channels available over the subscriber line are dynamically allocated with telephone signals generally taking preference over data signals.

Abstract: Transmitting/receiving apparatuses are installed in a base station and a mobile station, respectively, to perform mutual transmission and reception by using a plurality of spreading codes. The transmitting/receiving apparatus installed in the base station has a block for designating to the mobile station the kind and the number of spreading codes used in a reverse link from the mobile station to the base station through a forward link at the time that communication with the mobile station is started. The transmitting/receiving apparatus installed in the mobile station has a block for transmitting a signal to the base station by using spreading codes of the designated kind and number.

Abstract: An accessory device for portable telephones which provides simultaneous functionality of a hands-free accessory device and a data-in-voice modem enabling a portable telephone to be used in a vehicle such that the driver can be engaged in a hands-free conversation at the same time as data (such as GPS position information) is being sent over the same cellular voice channel.

Abstract: A system includes a plurality of end-user devices coupled to a communications controller which is connected to an integrated services digital network (ISDN) line of a telecommunications network. The ISDN line has two bearer channels bandwidth and a data channel. A method of subchannel bandwidth allocation from the bearer channels is initiated by establishing, as demanded for a particular end-user device, a call connection though the telecommunications network between the communications controller and another network terminator. The controller inquires, over the data channel, whether the network terminator is a compatible communications controller.

Abstract: Allocation of telecommunication systems bandwidth is provided preferably in a predictive fashion. Packets are identified with particular data streams and characteristics of the data streams are used to predict probable future bandwidth requirements. Such predictions are used to allocate high-bandwidth channels, such as ISDN B channels and to close or switch channels as in accordance with predicted needs. Preferably the system is self-learning and can modify a rules base for making allocation decisions e.g. based on actual use statistics.

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 method and system for providing telephony services utilizes an emulated telephony channel within an allocated portion of digital subscriber line bandwidth. The digital subscriber line connects to a packet switched network, and embodiments of the present invention derive telephony services over the digital subscriber line by utilizing a portion of the available bandwidth to emulate one or more telephony channels.

Abstract: The present invention enables a user, logged on to a data network over a traditional telephone line, to be notified of incoming calls over that same line without interruption of the data session. In addition, the user can accept the incoming call without terminating the data session. The user is also able to provide communication between the incoming call and the data session such that, voice over the data session can be conferenced into voice over the incoming telephone line.

Abstract: A line interface unit terminates individual subscriber lines and supports conventional telephone service and high speed data service. It provides an interface between subscriber customer premises equipment and central office equipment. The use of large diplex filters is not required in order to terminate subscriber lines at the central office while providing high speed data services.

Abstract: A communication system, a mobile services switching center and a method is described, for allowing a multi-dialogue communication to take place between a first subscriber station (MS1, MS2, . . . MSn) and a second subscriber station (ISDN ST1) through a mobile services switching center (MSC/VLR) of a public land mobile network (PLMN). A mapping device (MP) of the mobile services switching center (MSC) maps several communication channels between the first subscriber station (MS1, MS2, . . . MSn) and the mobile services switching center (MSC/VLR) onto at least one second communication channel (CC2) between the PLMN and a fixed network (FN).

Abstract: A method and device for distributing both high-speed data service, such as digital computer, video and multimedia data, and lower speed data service, such as POTS voice telephone signals, throughout a customer premises. High-speed digital data and lower speed POTS voice signals are separated by a POTS splitter and distributed throughout the customer premises on separate distribution networks. The lower speed POTS is carried on a wireless distribution network and the high-speed data carried on the existing customer premises wiring ordinarily used for POTS.

Abstract: In a wireless communication system, a method and apparatus improves a data transmission rate of baseband data via a wireless transceiver adapted for voice transmission. A modem receives baseband data for distribution to a wireless transceiver. The modem complementary pre-conditions frequency amplitudes that are subsequently augmented or pre-emphasized by the wireless transceiver. The modem then modulates the pre-conditioned baseband data for transmission by the wireless transceiver. Modulation may be performed using a single-carrier, multiple-carrier or a carrierless technique. The wireless transceiver pre-emphasizes the modulated pre-conditioned baseband data for presenting a consistent or flat amplitude spectrum to the RF transmitter.

Abstract: In a wireless communication apparatus for communicating by using a frequency hopping system, by providing a function such that frequency channels are divided into a plurality of channel groups or data of different types is transmitted every divided channel group or a different channel access system is used every channel group, even if the data of different types is simultaneously transmitted, a data error due to a collision or mutual interference of the data is prevented.

Abstract: The present invention provides for a receiver addressable AM compatible digital broadcast system and method. The digital broadcast signal includes a plurality of digitally modulated signals and an analog signal. A transmitter useable within the system includes a data combiner for generating an aggregate digital data signal, and a waveform generator for forming the digital broadcast signal. A receiver useable within the system comprises a waveform detector for separating the signals and a data parser for separating the digitally modulated signals. The present invention further provides for a method of selectively transmitting data via a digital broadcast signal. The method includes forming the digital broadcast signal from an analog signal and a plurality of digitally modulated signals, transmitting and receiving the digital broadcast signal.

Abstract: A user through a personal computer, in real time, controls the activation and selection of voice and data transmission paths in a communication network independent of network profiles. The network includes a public switched telephone network and a data network, e.g. the Internet for voice and/or data transmissions over either the voice or data networks. In the network, a voice terminal and a computer terminal are coupled to a shared voice and data terminal. A digital subscriber line access multiplexer is coupled to the shared voice and data terminal; the data network through a client server interface, and a voice network through an intelligent switch. The client server interface includes programmable stored data descriptive of network-authorized data and voice functions and transmission paths in the voice and data networks. The interface is linked to the multiplexer and switch for transmitting signaling messages directing traffic to the voice and data networks in accordance with the stored data.

Abstract: The present invention provides a facility transport system for transporting Ethernet over digital subscnber lines. The system, termed 10BaseS, is capable of transmitting 10 Mbps Ethernet over existing copper infrastructure. The system utilizes carrierless amplitude modulation/phase modulation (CAP), a version of suppressed carrier quadrature amplitude modulation (QAM). The 10BaseS transport facility can deliver symmetrical data at approximately 13 Mbps (net 10 Mbps) over the unscreened, twisted pair telephone wires originally intended for bandwidths between 300 Hz and 3.4 KHz. The system utilizes frequency division multiplexing (FDM) to separate downstream channels from upstream channels. FDM is also used to separate both the downstream and upstream channels from POTS signals. The downstream and upstream data channels are separated in frequency from bands used for POTS and ISDN, enabling service providers to overlay 10BaseS on existing services.

Abstract: An apparatus and method for facilitating interaction during a communication session between an analog modem and a terminal adapter for conveying digital alert tones and control data therebetween is provided. The embodiments provide for a collateral digital communication path between a microcontroller of an analog modem and a microcontroller of a terminal adapter for selectively relaying digital alert tones and control data therebetween. One embodiment utilizes a cellular interface of an analog modem for tapping and evaluating information for the presence of control data. Upon successful identification of control data, the microcontroller of a terminal adapter is notified and the specific control data detected in identified. By providing a method of apparatus for digitally relaying control data, accuracy of identification of control data by a terminal adapter is enhanced by foregoing needless signal transformation and retransformation.

Abstract: A wireless power line carrier voice and data communication device is provided. The device permits a user to connect one or more electronic devices to surge suppress and isolated AC power connections while simultaneously providing a communication channel between telephone equipment, such as telephone extensions, modems and/or facsimile machines, across the AC power lines to a remote telephone connection. This invention prevents the degradation of the voice and/or data signal across the power lines that would otherwise be induced by the AC connected electronic equipment. Furthermore, this invention provides a cost effective, convenient solution to the data processing user who requires access to telephone lines, for voice, data or both, as well as AC power outlets for electronic equipment all from a physical location some distance from a convenient phone connector. The isolation and surge suppression circuitry is designed specifically to address the power line carrier environment.

Abstract: In a modem signal transmitting/receiving system which includes a modem signal transmitter and a modem signal receiver connected to each other via a transmission line, a modem signal transmitter is suitable to transmit by multiplexing an analog signal such as audio and a modem carrier with digital data. Analog signals and digital data can be multiplex-transmitted at a high rate by effectively using an analog signal line. The modem signal transmitter includes a modem transmitting unit, an analog/digital converting unit which converts an analog signal into a digital signal, a demodulating unit which demodulates the digital signal with a predetermined carrier frequency signal, a decimation processing filter which decimates the demodulated signal and a deciding unit which decides a coordinate on a two-dimensional plane for the output from the decimation processing filter and then inputs the decision result to the modem transmitting unit.

Abstract: A telecommunication system for providing a remote access connection having a bandwidth of 128 Kbps or 144 Kbps to any location (homes, small businesses, etc.) connected to a central office by a local loop, and higher bandwidth for some locations. The 128 Kbps or 144 Kbps is provided using ISDN Digital Subscriber Loop (IDSL) technology and higher bandwidth using other DSL technologies such as ADSL. Using shared equipment and transmission facilities, the present invention enables the high-speed remote access connections to be provided in a cost effective manner.

Abstract: A signal processing method and apparatus are described for demultiplexing selected components (especially audio signals) from a multiplexed data stream. Each of the desired channel components has a unique identification code detected by a processor parsing the contents of a received data buffer between the disc reader and the demultiplexer. The demultiplexer is set up to output received data channel streams having a specific identification code different from any of those assigned to the channel streams originally. Prior to demultiplexing, the identification code for a desired one of the channel streams is altered by the processor to the specific identification code as it passes through the buffer in order to avoid re-setting the demultiplexer.

Abstract: The present invention enables a dial modem capable of simultaneous voice and data (SVD) operation and connected to a conventional telephone set to automatically select between SVD operation, analog voice operation and digital data operation when transmitting or receiving communication signals based on the position of the telephone set's hookswitch. The invention includes a hookswitch position detector, connected to the telephone set, for sensing the current position of the hookswitch, and a signal controller, connected to the hookswitch position detector. The signal controller may be configured to enable either of two hookswitch control option settings. The hookswitch control option settings determine the manner in which the controller responds to the current hookswitch position ("on-hook" or "off-hook") detected by the hookswitch position detector.

Abstract: In methods and apparatus for providing communications to a telecommunications terminal, a request for a page of data is received at a data service node, the request specifying at least one particular terminal. A terminal status request is sent from the data service node to a communications system which serves the particular terminal, the terminal status request specifying the particular terminal. The data service node receives from the communications system a terminal status message containing information indicating a current status of the particular terminal. The data service node sends to the data terminal a page of data indicating the current status of the particular terminal. The page of data comprises a communications request icon when the particular terminal is in a state in which it can communications.

Abstract: A discriminating section determines whether a voice band signal is "voice" or "data". When the voice band signal is voice, a voice detector detects the presence or absence of voice in the signal. If silence is detected, a cell assembly section prohibits transmission of cells. In the meantime, when the voice band signal is data, a carrier detector detects the presence or absence of a carrier. A cell assembly section sends out a cell in response to the presence of the carrier in the input signal, while prohibiting the cell transmission when no carrier is detected in the input signal. The apparatus reduces the number of cells transmitted and achieves a high transmission efficiency.

Abstract: Auxiliary data is transported in a primary data signal by hiding the data in the form of colored noise. The colored noise has a spectrum that simulates the spectrum of the primary data signal. The data to be transported is first converted to a spread spectrum signal. The primary data signal is analyzed to determine its spectral shape. The same spectral shape is imparted to the spread spectrum signal, which is then combined with the primary data signal for transmission. The spectral shaping can be performed using time domain modeling and synthesis such as linear predictive coding or by using subband coding techniques such as fast Fourier transforms. A plurality of different auxiliary information streams can be transported on the primary data signal. By adjusting the gain of individual spread spectrum signal carrier(s) and the power of the colored noise, the auxiliary information stream(s) can be rendered at a desired level at, below or above an interference threshold in the primary data signal.

Abstract: A mobile terminal communicable with a public switched network through a stationary radio station over a radio channel includes a telephone network effecting audible, telephonic conversation over the radio channel to the radio station. The mobile terminal may be set to the condition in which it is not allowed to effect the telephonic conversation to the radio station. The mobile terminal disables the telephone speech circuit thereof while it is in the condition. When the mobile terminal receives a call from the public switched network, it transmits to the public switched network the status signal representing that it is in the condition. In response to the status signal, a message meant to the mobile terminal is transmitted through the public switched network over the radio channel to the mobile terminal, and is displayed visually on the display and/or stored in the memory of the mobile terminal.

Abstract: An integrated voice and packet data telecommunications system has at least one dual mode channel. The system comprises a plurality of transceivers, at least one transceiver being operable to transmit and receive voice traffic on the dual mode channel, and at least one transceiver being operable to transmit and receive packet data traffic on the dual mode channel. The system further comprises a controller for controlling the transceivers so as to allocate the dual mode channel either to voice communications or to packet data communications. The controller responds to changing demand for voice channels and packet data channels by changing dynamically the allocation of the dual mode channel. The system is particularly useful for providing Cellular Digital Packet Data (CDPD) services.

Abstract: A micro-controller having multiple operating modes, including an idle mode, an analog voice mode, a digital data mode, and a simultaneous voice and data (SVD) mode, is provided to a DCE designed to support multi-modal voice and/or data calls over a single analog-loop telephone line. The micro-controller further contains control logic for establishing multiple logical connections and voice as well as data transmission protocols over these logical connections with another DCE, when switching from the analog voice mode to the SVD mode, and for multiplexing voice and data transmissions over these logical connections. The control logic transmits voice over a logical voice connection in nominally fixed intervals. A non-voice transmission, i.e. data or information to be exchanged, can be suspended in favor of transmitting a voice transmission. During the suspension, a special character (e.g., escape) is transmitted in conjunction with a length preceding the voice transmission.

Abstract: Simultaneous voice-and-data (SVD) modems (106, 156) are employed automatically in a call initiated between a telephone (111) of a remotely-serviceable communications switching system (101) and a telephone (161) of a service center (150) that includes either a maintenance and diagnostics system (165) or maintenance and diagnostics workstations (162). The remotely-serviceable communications switching system automatically connects the voice portion of a single SVD call set up by the SVD modem to its associated telephone and automatically connects the data portion of the SVD call to its remote maintenance and diagnostics port (109). An automatic call distribution (ACD) communications switching system (151) of the service center automatically connects the voice portion of the SVD call to a telephone (161) of one of its agents (163) and automatically connects the data portion of the SVD call to the maintenance and diagnostics system or workstation.