Abstract: An inexpensive alternative for call queuing is provided by queuing calls at an intelligent peripheral within an AIN telecommunication system. A call to the subscriber line is detected at a local switch supporting the subscriber line. If the subscriber line is busy, the call to the subscriber is queued in the intelligent peripheral.

Abstract: A method is provided for measuring harmonic load-pull for frequency multiplication to obtain a load impedance and a source impedance for which frequency multiplication performance of a frequency multiplication device is optimized. A fundamental frequency signal is supplied to a frequency multiplication device under test from a source measurement system that includes a source mechanical tuner for adjusting a fundamental source impedance of an input signal. A load impedance frequency is obtained at which multiplication performance of the frequency multiplication device is optimum from a load measurement system that includes a load mechanical tuner for adjusting a load impedance of a target even-order multiplied signal among harmonics included in signal output of the frequency multiplication device.

Abstract: When the present modem control apparatus detects that the receive level of a probing signal in phase 2 of the pre-communication procedure or a tone signal with a specific frequency in phase 2 of the pre-communication procedure is lower than a prescribed value, it sets the transmission rate of the control channel to a low rate of 1200 bps. In this case, the modem control apparatus sets the transmission rate to 1200 bps through a prescribed bit of the MPh signal in the communication control procedure and performs the setting that will not permit communications with the answer modem at different transmission rates, through the second prescribed bit of said MPh signal, and notifies those settings to the answer modem, thus carrying out communications at a lower transmission rate.

Abstract: A system and method for sharing a spare channel among two or more optical ring networks that have a common span. A first optical cross-connect switch (OCCS) and a first OCCS controller are placed at one end of the span and a second OCCS and OCCS controller are placed at the other end of the span. The first OCCS and the first OCCS controller are coupled to a first ADM from each optical ring, and the second OCCS and the second OCCS controller are coupled to a second ADM from each optical ring. The first OCCS controller receives alarm indications from each ADM that it is coupled to that senses a ring failure. The second OCCS controller receives alarm indications from each ADM that it is coupled to that senses a ring failure.

Abstract: To obtain means for suppressing a jump phenomenon to a B mode in a Colpitts oscillator using an SC-cut crystal unit. In a Colpitts oscillator including a piezoelectric resonator and an amplifier circuit, a series resonance circuit and a parallel resonance circuit consisting of an inductance and a capacitance are inserted into an oscillation loop, and the frequency of the series resonance circuit is set in the vicinity of the oscillation frequency of the oscillator, and the frequency of the parallel resonance circuit is set in the vicinity of an unwanted oscillation frequency of the oscillator, thereby to suppress the unwanted oscillation.

Abstract: A mobile communication system is disclosed that supports soft handoff between switching stations and increase service quality. The mobile communication system can include at least one mobile switching stations having a first inter network that controls a plurality of base station controllers and at least one local switching stations coupled to the mobile switching stations. Each of the local switching stations can include a second inter network that provides a communication path between the mobile switching stations.

Abstract: The present invention involves a system and method for classifying information received by a communications device. A first parameter having a first parameter range and a second parameter range, and a second parameter having a third parameter range and a fourth parameter range, are defined. A first class having one of the first parameter and the second parameter ranges, and one of the third and the fourth parameter ranges, are also defined. A second class having another one of the first parameter and the second parameter ranges, and another one of the third and the fourth parameter ranges, is also defined. Information having a first parameter value and a second parameter value is received. The method determines if the first parameter value is within one of the first and second parameter ranges and if the second parameter value is within one of the third and fourth parameter ranges is made.

Abstract: A messaging unit equipped with a cellular transceiver is attached to a truck trailer or a monitoring station located within a communications network. The messaging unit generates a data message in response to the occurrence of a reporting event. Upon generation of a data message, the messaging unit transmits the data message over the network via voice or data channels. Data messages may be sent over a data channel of the network using a feature request.

Abstract: The present invention discloses a power distribution system for circuit boards connected to a backplane in a customer premises telecommunications hub. Each functional board in the system contains its own DC to DC converter for receiving a first DC supply voltage from the backplane and supplying a lower voltage to the circuits on the board. The converter is of the single ended primary inductance converter type having its inductance element positioned between the power switching device and the input power capacitor. The power converter is connected to the main power supply through two pins of a staged or staggered connector on the board. A resistor is connected between the earlier of the two pins to make contact with the main supply. Due to the small size of the input resistor required for the converter, the input capacitor can almost fully charge before the second pin, which connects directly to the converter input, makes contact.

Abstract: A device (310, 320), in its receiver aspect, interconnects a high-rate terminal, e.g. DS1, link transmitting outgoing fractional DS1, e.g. DS0, channels destined for a customer site with autonomous first and second networks (301, 302) composed of high-rate links (112, 312) propagating incoming fractional DS1 channels. Each network is adapted to insert a fault indication signal in any channel affected by a fault condition. The device monitors each incoming channel from each network for a fault indication signal and switches fractional DS1 channels from the network manifesting a fault condition to the alternate network, thereby maintaining essentially uninterrupted digital service to the customer site. In its transmitter aspect, the device transmits replicated versions of channels supplied by the terminal link simultaneously onto both the first and second networks, thereby providing a substantially identical device connected at the other end of the networks with corresponding incoming high-rate link signals.

Abstract: A system, method and computer program product for emulating a telecommunications network by simultaneously emulating multiple independent activities normally performed by multiple network devices in a telecommunications network includes a network interface for communicating with a control system, a user interface for accepting user input and for providing user output, a command response manager for reading control system commands and for formulating intelligent responses, a script interpreter for executing scripts, a script database containing data from actual network devices for use by the scripts, a database manager for performing database functions and a multi-tasking system manager for controlling these logical components and for interacting with an operating system of a host computer to provide for invoking and terminating various processes. The system provides both script and non-script responses to a control system in order to emulate digital matrix switches.

Abstract: The present invention provides a visual messaging device for use with a high speed network. The message data is communicated to the network by a remote device, such as a computer or server. The visual messaging device includes a network interface circuit that receives the message data from the network and arranges it in a memory unit in usable form (packets) for use by a processor at the high network speed. The processor includes a central processing unit (CPU) and is a multi-tasking device, which sequences the messages in real time for display by the display device according to programmed instructions stored or provided to the visual messaging device. A display driver activates and deactivates the visual elements, such as individual LEDs, according to the processor's instructions. The various elements of the visual messaging device communicate in real time over a common data bus. The network may be a local area network, wide area network or the internet.

Abstract: To ensure that the distributed restoration process of a DRA provisioned network proceeds only in response to true failures, the present invention DRA network provisions to each of the ports of the nodes a timer mechanism for ascertaining whether an alarm is a genuine alarm. This is done by presetting the timer with an expiration period so that an alarm is validated as a failure only upon the expiration of the timer. When validated, the value of a counter is incremented. The value of the counter is reflective of the sum of validated alarms, and is compared against a preset threshold value. And it is only when the value of the summed validated alarms exceeds the preset threshold value would the DRA process be initiated. When a validated alarm ceases, the reverse process takes place. That is, the ending of the alarm has to be validated by another timer, which could be the same timer as used for validating an alarm.

Abstract: A restoral route generation process combines elements of a pre-plan methodology with a dynamic route generation methodology. The resulting hybrid approach quickly produces a restoral route in real time that has a minimal associated cost. The hybrid approach pre-generates sub-routes that are combined to produce a restoral route. The combining of the sub-routes takes place dynamically in response to a network failure. The hybrid approach may interactively operate to generate restoral routes for each trunk in the network that is affected by an outage.

Abstract: An apparatus and method for coordinating multiple user responses solicited from a user during a session with a call processing application includes receiving a first transmission from a user via a communication network, the transmission causing a voice channel control unit of an IVR unit to open a voice-form voice file. A first request is transmitted to the user, soliciting a first user response, the request being stored in a voice file database of the IVR unit. After receiving the first response, the first response is recorded into the voice-form voice file. A second request is transmitted to the user requesting a second user response. The second user response is appended to the voice-form voice file after it is received. A termination message is transmitted to the user informing the user that the current interaction with the IVR unit is complete. A system administrator configures the call processing application stored in an application database of the IVR unit.

Abstract: A public key cryptosystem with roaming user capability within a network that allows secure communication between users of the system, client machines, and encryption servers. A client machine generates and stores an encrypted private key on an encryption server. A user may then access the encrypted private key from any client machine located on the network and decrypt it using a passphrase, thus giving the user roaming capability. The private key may then be used to decrypt any encrypted messages received. A user can generate a digital message, encrypt it with a client recipient's public key, and transmit it to the encryption server from any client machine on the network.

Abstract: A method for qualifying a local loop for digital subscriber line service utilizes a test device connected to the customer end of the loop to measure test signals originating from the provider end of the loop. An output for the loop qualification test device is based on the measured test signal.

Abstract: An interface unit for a telephone receives data from an external source, such as an ISDN switch. Some of the data from the external source can be displayed on a display of the telephone. The interface unit also receives user inputs from various keys on the telephone, including a set of dialog keys. The interface unit includes a user interface that generates menu messages for displaying and operating a set of menus on the telephone display. A user of the telephone can use the dialog keys to navigate through the menus and perform a variety of actions, including executing telephone functions and changing the configuration of the telephone. A display data selector within the interface unit receives the data from the external source and from the interface unit and selects particular data items to be displayed on the telephone display. The selection of data to be displayed is based in part on the operational state of the telephone. The telephone has an active state, a configuration state and an idle state.

Abstract: A system for downloading a software image to a SONET network element which eliminates the need for a separate overhead channel for this purpose. The system conveys the software image using the File Transfer Protocol (FTP) over the Transmission Control Protocol (TCP), over the Internet Protocol (IP), using ATM. The disclosed system enables ATM cells carrying the software image to be received over a SONET ring connected to the device. The disclosed system uses permanent virtual circuits (PVCs) between network elements over which the software image may be transported. In a first embodiment, the PVCs form a star of logical connections with remote network elements to which software image files may be downloaded from a “gateway” network element. The gateway network element is a network element communicative with a central management station, which provides data to be downloaded to the remote network elements.

Abstract: A customer premise equipment device such as a telephone and an associated method for routing a call from an inbound central office are provided. The telephone comprises an audible input mechanism, an audible output mechanism, a keypad, and control logic. The keypad is used by a user to press a sequence of keys to initiate a call. The control logic responds to the pressed sequence of keys by transmitting a signal indicative of call information to the inbound central office. The keypad includes a standard telephone keypad, and further includes at least one additional key for use by the user to designate a routing method for the call.