Abstract: In some implementations, a device may receive, via a universal serial bus (USB) interface, configuration information and a supply of power from a network device. The device may receive, via an antenna that is external to the device, a first signal indicating timing information. The device may generate, based on the first signal, a second signal and a third signal, wherein the second signal comprises a one pulse per second signal and the third signal comprises a ten-megahertz signal. The device may provide, to the network device, the second signal and the third signal. The device may receive, via an input port, a clock signal to provide an extended holdover functionality to the network device.

Abstract: In some implementations, a device may receive, via a universal serial bus (USB) interface, configuration information and a supply of power from a network device. The device may receive, via an antenna that is external to the device, a first signal indicating timing information. The device may generate, based on the first signal, a second signal and a third signal, wherein the second signal comprises a one pulse per second signal and the third signal comprises a ten-megahertz signal. The device may provide, to the network device, the second signal and the third signal. The device may receive, via an input port, a clock signal to provide an extended holdover functionality to the network device.

Abstract: In some implementations, a device may receive, via a universal serial bus (USB) interface, configuration information and a supply of power from a network device. The device may receive, via an antenna that is external to the device, a first signal indicating timing information. The device may generate, based on the first signal, a second signal and a third signal, wherein the second signal comprises a one pulse per second signal and the third signal comprises a ten-megahertz signal. The device may provide, to the network device, the second signal and the third signal. The device may receive, via an input port, a clock signal to provide an extended holdover functionality to the network device.

Abstract: A method and apparatus are provided for horizontally slicing a multi-stage switching fabric having transmission inputs and transmission outputs to and from the switch fabric. The switching fabric includes switch elements arranged in at least first and second stages, each switch element having element inputs and outputs with each switch element being configured to join one of the element inputs with an associated one of the element outputs. The switch fabric includes a first logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage. The first logic device also contains a stage-2 subset of the switch elements arranged within, and configured to operate as part of, the second stage. The switch fabric includes a second logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage.

Abstract: Allocation of an amount of available bandwidth among a plurality of users of a computer network is provided. Each user has a maximum allocation of bandwidth. Tier information of a plurality of tiers is accessed. In the tier information, users are grouped according to maximum allocation. Tier information includes a breakpoint value of each tier. The available bandwidth is allocated in one example embodiment by (1) allocating the maximum allocations to users in tiers with breakpoint values less than or equal to the amount of available bandwidth, and (2) allocating remaining available bandwidth in a fair manner among remaining users, which are users in tiers with breakpoint values greater than the amount of available bandwidth. The breakpoint value of at least one tier is a minimum amount of bandwidth that must be allocated in a Max-Min fair manner among the plurality of users such that each user in the tier receives its maximum allocation of bandwidth.

Abstract: An apparatus for replacing lost PSTN data in a packet network and for generating variable power white noise, includes a lost packet detection unit (402) for detecting lost data packets, a data processing unit (404) for producing in response a lost data output indicating when replacement data needed, data playout unit (408) or data replacement unit (406), each may be implemented as a variable power white noise generator (FIG. 3) to generate replacement data by reusing data stored in an extended playback buffer, and placing the re-used replacement data on an external network.

Abstract: A method and apparatus are provided for horizontally slicing a multi-stage switching fabric having transmission inputs and transmission outputs to and from the switch fabric. The switching fabric includes switch elements arranged in at least first and second stages, each switch element having element inputs and outputs with each switch element being configured to join one of the element inputs with an associated one of the element outputs. The switch fabric includes a first logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage. The first logic device also contains a stage-2 subset of the switch elements arranged within, and configured to operate as part of, the second stage. The switch fabric includes a second logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage.

Abstract: A system automatically provisions a data flow. The system provides a flow range. The system receives a data unit associated with an unprovisioned data flow, determines whether the unprovisioned data flow falls within the flow range, and creates an automatically provisioned data flow based on the unprovisioned data flow when the unprovisioned data flow falls within the flow range.

Abstract: Allocation of an amount of available bandwidth among a plurality of users of a computer network is provided. Each user has a maximum allocation of bandwidth. Tier information of a plurality of tiers is accessed. In the tier information, users are grouped according to maximum allocation. Tier information includes a breakpoint value of each tier. The available bandwidth is allocated in one example embodiment by (1) allocating the maximum allocations to users in tiers with breakpoint values less than or equal to the amount of available bandwidth, and (2) allocating remaining available bandwidth in a fair manner among remaining users, which are users in tiers with breakpoint values greater than the amount of available bandwidth. The breakpoint value of at least one tier is a minimum amount of bandwidth that must be allocated in a Max-Min fair manner among the plurality of users such that each user in the tier receives its maximum allocation of bandwidth.

Abstract: A method and apparatus are provided for horizontally slicing a multi-stage switching fabric having transmission inputs and transmission outputs to and from the switch fabric. The switching fabric includes switch elements arranged in at least first and second stages, each switch element having element inputs and outputs with each switch element being configured to join one of the element inputs with an associated one of the element outputs. The switch fabric includes a first logic device that contains a stage-1subset of the switch elements that is arranged within, and configured to operate as part of, the first stage. The first logic device also contains a stage-2 subset of the switch elements arranged within, and configured to operate as part of, the second stage. The switch fabric includes a second logic device that contains a stage-1 subset of the switch elements that is arranged within, and configured to operate as part of, the first stage.

Abstract: A system automatically provisions a data flow. The system provides a flow range. The system receives a data unit associated with an unprovisioned data flow, determines whether the unprovisioned data flow falls within the flow range, and creates an automatically provisioned data flow based on the unprovisioned data flow when the unprovisioned data flow falls within the flow range.

Abstract: In allocating bandwidth to data for transfer through a network device, bandwidth is allocated to committed data traffic based on a guaranteed data transfer rate and a queue size of the network device, and bandwidth is allocated to uncommitted data traffic using a weighted maximum/minimum process. The weighted maximum/minimum process allocates bandwidth to the uncommitted data traffic in proportion to a weight associated with the uncommitted data traffic.

Abstract: An apparatus for replacing lost PSTN data in a packet network and for generating variable power white noise, includes a lost packet detection unit (402) for detecting lost data packets, a data processing unit (404) for producing in response a lost data output indicating when replacement data needed, data playout unit (408) or data replacement unit (406), each may be implemented as a variable power white noise generator (FIG. 3) to generate replacement data by reusing data stored in an extended playback buffer, and placing the re-used replacement data on an external network.

Abstract: A method and apparatus for replacing lost PSTN data in a packet network and for generating variable power white noise are disclosed. In one embodiment, the method for replacing data includes the steps of receiving data packets, detecting lost data packets, and producing in response a lost data output indicating when replacement data needs to be provided. The method preferably generates the replacement data by re-using data stored in an extended playback buffer (with the re-used replacement data starting with the oldest output data byte stored in the extended playback buffer), and placing the re-used replacement data on an external network. Another aspect of the invention is a variable power white noise generator for providing replacement data. The variable power white noise generator may use, for example, a multi-bit register that stores a magnitude, and a pseudo-random sign bit generator to change the positive and negative sense of the magnitude.

Abstract: A neural network solution for routing calls through a three stage interconnection network selects an open path through the interconnection network if one exists. The neural network solution uses a neural network with a binary threshold. The weights of the neural network are fixed for all time and therefore are independent of the current state of the interconnection network. Preferential call placement strategies are implemented by selecting appropriate external inputs to the neural network. An interconnection network controller stores information reflecting the current usage of the interconnection network and interfaces between the interconnection network and the neural network.

Abstract: An adaptive transversal filter is characterized by a first adaptive filter for generating a plurality of estimated impulse response coefficients representing an impulse response of a transmission path. An averaging circuit is coupled with the first adaptive filter, and generates a plurality of average estimated impulse response coefficients having values in accordance with the average values over a most recent time interval of associated ones of the estimated impulse response coefficients, and a second adaptive filter receives the average estimated coefficients. The average estimated impulse response coefficients more closely represent and have less variance with respect to the actual impulse response of the transmission path than do the estimated coefficients, and the second filter generates an estimate of an echo signal through a process including convolution of the average estimated coefficients and an input signal.