Abstract: A method to enable mobility while connected to an Internet protocol network comprises receiving a first data packet from a mobile node at a first mobile gateway in a mobile-gateway-communication network via a first access point and determining if a communication session is ongoing responsive to receiving the first data packet. When it is determined that a communication session is not ongoing, the first mobile gateway is established as a home mobile gateway for the duration of the communication session. When the mobile node connects to a second mobile gateway in the mobile-gateway-communication network via a second access point during the communication session, a tunnel is opened from the second mobile gateway to the home mobile gateway so that the communication session is maintained regardless of the protocol implemented by the mobile node and the access points.

Abstract: A matrix card is provided. The matrix card includes a plurality of physical layer devices. Each of the physical layer devices is adapted to support cells of first and second priorities and including a controllable port. The ports are in operative communication with each other to provide for the transmission of all cells of the first priority from all of the plurality of physical layer devices before transmitting any cells of the second priority from all of the plurality of physical layer devices.

Abstract: In a family of telecommunications modules or other circuit boards, driver software is divided into a core support package for initializing board components common to the family of circuit boards and one or more extended support packages specific to individual members of the family. This facilitates a reduction in the amount of programming effort needed across the family of circuit boards as the core support package need only be developed once for the family of boards rather than developing complete driver programs for each member of the family. The remaining programming effort can then be focused on the specialized subroutines. In addition, changes in hardware common to each member of the family can be accommodated by redeveloping only the core program. This need only occur once for the entire family, rather than once for each member of the family.

Abstract: An electronic system is provided. The electronic system includes a logic device and at least one input/output interface coupled to the logic device. The electronic system further includes an input/output (I/O) device with memory coupled to the at least one input/output interface, wherein the memory of the I/O device is mapped as an address space region that is directly readable and writable by a processor.

Abstract: There are disclosed methods and apparatus for testing memory components for faults, defects or the like, by generating a testing sequence that produces various bit combinations as well as current changes, that when coupled, stresses or fatigues the memory component, and allows for the evaluation of single bits. The testing sequence is provided in cycles, formed of complement word pairs of N bit words. The first, or initial, cycle typically includes a first word of all binary zeros. Successive or subsequent cycles include a shifted bit in each subsequent first word. The testing pattern is written into the memory component(s) under test and corresponding words are read from the memory component(s). The written and read words are then compared, with this comparison analyzed for detection of faults, defects or the like in the memory component(s).

Abstract: The multiple modem apparatus has a number of analog front ends that feed analog signals to and receive analog signals from a modem controller circuit. The modem controller circuit has a codec function for sampling, quantizing, and digitizing the received analog signals. The codec additionally creates an analog signal from digitized signals received from the other side of the modem apparatus. A digital signal processing function provides digital processing of digital signals. An Ethernet device converts digital signals from the modem controller circuit to the Ethernet format and Ethernet signals going to the modem controller circuit are converted from the Ethernet format to digital data. A multiple modem apparatus controller controls the operation of the apparatus while providing synchronization of the multiple analog front ends and routing of data.

Abstract: A watchdog device is refreshed using either a hardware strobe or a software output as the refresh strobe. The hardware strobe is selected when the software output is undesirable as the refresh strobe. Undesirability includes the inability of the software output to reliably refresh the watchdog device or an unknown ability of the software output to reliably refresh the watchdog device.

Abstract: An electronic module that has a card cage having slots for first and second common cards located at different ends of the card cage and a plurality of slots between the slots for the first and second common cards for receiving a plurality electronic circuit cards each providing a clock source within the card cage. The electronic module has a bus that connects the plurality of slots for receiving the plurality electronic circuit cards with the slots for the first and second common cards such that the bus provides a substantially equal distance to the slots for the first and second common cards from any of the plurality of slots for receiving the plurality electronic circuit cards.

Abstract: The present invention relates telecommunication systems with virtual connections for voice over digital subscriber lines. In one embodiment, a digital subscriber line (DSL) access device is disclosed. The device comprises a network port, a plurality of local ports and an access function. The network port is adapted to receive cells on at least one aggregated permanent virtual connection. The plurality of local ports are adapted to interface a plurality of local permanent virtual connections. The access function is adapted to translate the cells between aggregated permanent virtual connections and the plurality of local permanent virtual connections.

Abstract: A method of transferring data from a host system to a target system includes creating a data record for transmitting data to the target in which the record includes a starting address for loading a sequence of data into a memory of the target system, one or more error detection codes, and an uninterrupted sequence of data for loading sequentially into the memory.

Abstract: Identifying virtual connection to telephony port relations in a telecommunication system. In one embodiment, a database is compiled of associations of virtual customer identity (VCID) information from ATM cells to telephony ports in an access system. The database is compiled by sending calling line identification presentation (CLIP) information across an ATM network along with the VCID to a virtual identification line (VIL) port in the access system. Reading the CLIP information associated with the VCID and storing VCID to telephony port relations in the database based on the CLIP information.

Abstract: An electronic circuit card having a central processing unit and a port electrically connected to the central processing unit is provided. The port is electrically connectable to a monitor and control system via a backplane of a housing for containing the electronic circuit card and a panel located externally of the housing. The monitor and control system is located externally of the housing and the panel. The port is adapted to convey signals between the central processing unit and the monitor and control system for at least one of monitoring and altering the operation of one or more software programs of the central processing unit.

Abstract: A method for recovering a reference clock from a composite clock signal is provided. The method includes receiving the composite clock signal. First and second intermediate clock signals are generated from the composite clock signal. The first and second intermediate clock signals are combined to recover the reference clock signal.

Abstract: A method and apparatus for generating a stable high frequency clock from a low frequency reference signal performs most of its operations in a digital environment. The method and apparatus reduce complexity and cost by reducing the number of digital to analog and analog to digital conversions and eliminating synchronous counters.

Abstract: An apparatus and method for handling traffic on an SDH/SONET access network in which there are one or more central units and associated remote units, the remote units slaved to the frames generated by the central unit.

Abstract: A monitoring circuit is provided. The monitoring circuit includes a bus interface that is adapted to be coupled to a bus for monitoring signals on the bus. The monitoring circuit also includes a programmable data capture circuit, coupled to the bus interface, that is adapted to be programmed to selectively capture data from the bus interface based on at least one criteria. The monitoring circuit further includes a memory, coupled to the programmable data capture circuit, that stores data provided by the programmable data capture circuit. A user interface is also coupled to the programmable data capture circuit. The user interface provides access to the programmable data capture circuit for programming the at least one criteria for capturing data. A controller is coupled to the user interface and the programmable data capture circuit to control the programming and operation of the programmable data capture circuit.

Abstract: Methods for monitoring a plurality of electronic circuit cards of an electronic system are provided. An embodiment of the method includes collecting a plurality of messages at one of the plurality of electronic circuit cards. The plurality of messages includes a message from one or more of the plurality of electronic circuit cards. Transmitting the plurality of messages from the one of the plurality of electronic circuit cards to a monitor located externally to the electronic system is also included in the method. The method further includes selectively filtering the plurality of messages at the monitor, whereby producing a plurality of filtered messages.

Abstract: A multi-user simulation system is provided. The multi-user simulation system utilizes a processing unit with multiple ports, the processing system being coupled via communications lines to a central unit. The processing system is adapted to execute test software and communicate to the central unit via the multiple ports to emulate multiple users of a communications network, thus simulating real-world loading conditions of the communication network. A method for testing the central unit is also disclosed.

Abstract: An electronic system is provided. The electronic system includes a logic device and at least one input/output interface coupled to the logic device. The electronic system further includes an input/output (I/O) device with memory coupled to the at least one input/output interface, wherein the memory of the I/O device is mapped as an address space region that is directly readable and writable by a processor.

Abstract: A method of generating optimized netlists is provided. The method includes providing an input mechanism that is adapted to receive selective test report files from one or more circuit board test generation software programs and adapted to receive in-circuit test restriction parameters. The method further includes generating netlists based on the received test report files and in-circuit test restriction parameters. The netlists comprise one or more of total number of nets for the board, number of nets that do not require in-circuit test pads, number of nets that possibly require in-circuit test pads, number of in-circuit test pads as test points and edge connector terminals, and number of nets that require in-circuit test pads.