Abstract: A system for connecting a circuit network with a packet network. The system includes a packet switch fabric, a circuit network server, and a packet network server. The circuit network server has a first and second port. The first port of the circuit network server sends and receives circuit-based signals with the circuit network. The second port of the circuit network server sends and receives packet-based signals having packets with the packet switch fabric. The circuit network server also includes a plurality of digital signal processors. A digital signal processor performs packet adaptation and subsequent to the packet adaption a second at least one digital signal processor performs signal processing. The packet network server has a first port for sending and receiving packet-based signals with the packet switch fabric and a second port for sending and receiving packet-based signals with the packet network.

Abstract: A system and method for connecting a circuit network with a packet network. In one embodiment, the system contains a packet switch fabric, a circuit network server, a packet network server and a signal processing server. The circuit network server can send and receive circuit-based signals with the circuit network and can also send and receive packet-based signals with the packet switch fabric. The circuit network server has a digital signal processor which provides packet adaptation. The packet network server can send and receive packet-based signals with the packet switch fabric and can send and receive packet-based signals with the packet network. The signal processing server can send and receive packet-based signals with the packet switch fabric and has a digital signal processor for performing signal processing on the packet-based signals. The packet switch fabric transfers packet-based signals among the packet network server, the signal processing server, and the circuit network server.

Abstract: A system for connecting a circuit network with a packet network. The system includes a packet switch fabric, a circuit network server, and a packet network server. The circuit network server has a first and second port. The first port of the circuit network server sends and receives circuit-based signals with the circuit network. The second port of the circuit network server sends and receives packet-based signals having packets with the packet switch fabric. The circuit network server also includes a plurality of digital signal processors. A digital signal processor performs packet adaptation and subsequent to the packet adaption a second at least one digital signal processor performs signal processing. The packet network server has a first port for sending and receiving packet-based signals with the packet switch fabric and a second port for sending and receiving packet-based signals with the packet network.

Abstract: A remote access server and method for using the remote access server in a packet network. In one embodiment, the remote access server includes a packet switch fabric, a packet network server and a dial access server. The packet network server has a first port for sending and receiving packet-based signals with the packet switch fabric and a second port for sending and receiving packet-based signals with the packet network. The dial access server has a port for sending and receiving packet-based signals with the packet switch fabric and the dial access server has a first digital signal processor for performing signal processing on the packet-based signals. The packet switch fabric transfers packet-based signals among the packet network server, and the dial access server. In a further embodiment, the dial access server includes a second digital signal processor for performing signal processing on the packet-based signals.

Abstract: A high-capacity multistage switching system includes a second stage ATM switch that interconnects multiple lower-capacity switch modules. The switching system dynamically establishes a connection between the switch ports of two switch modules, using as part of the connection a permanent virtual connection, i.e., a pre-established connection path, through the ATM switch. Each switch module includes one or more switch ports, an ATM interface card and a time-division-multiplexed "TDM" bus that transfers user data between the switch ports and the ATM interface card. A system controller dynamically establishes connections between two given switch ports establishing one or more virtual trunks to transfer the user data between the TDM buses of the switch modules and cell payloads of ATM cells that are directed over the appropriate pre-established connection path through the ATM switch.

Abstract: The method and system implement a black-out timer to schedule intermediate network topology updates in coordination with a predetermined periodic network topology update timer to minimize redundant topology updates. Topology update scheduling in accordance with the present invention provides a significant enhancement to the efficiency of topology updating.

Abstract: A traffic management policing device (TMPD) (600) and method (TMPM) (700) monitor and substantially enforce a sustainable cell rate (SCR) and burst tolerance (BT) in a cell relay network utilizing a second-order leaky bucket system in conjunction with a peak cell rate (PCR) leaky bucket, thus substantially providing a predetermined quality of service.

Abstract: An end system cell flow regulator includes a congestion state determiner (208), a data source (202), a cell scheduler (206), and a leaky bucket monitor (204). The congestion state determiner typically decides congestion state based on feedback information and a timer. The data source typically further includes a cell generator, a cell buffer, a cell flow switch and a cell buffer state determiner. The cell scheduler further includes a DCR, Dynamic Cell Rate, determiner and a cell rate determiner, wherein the cell scheduler decides the next cell time for transmission based on the cell buffer state, congestion state and leaky bucket state. The cell rate determiner determines if the cell rate is set to DOR or PCR, Peak Cell Rate, based on the leaky bucket and cell buffer states. The DCR determiner establishes the DCR rate based on congestion state and cell buffer state.

Abstract: A device (500) and method (300) provide for management of resource allocation on selected links in a connection-oriented communication network such that existing connections may share the burden of freeing up resources for accommodating new connections. The rate of a connection is dynamically adjusted, on a connection-by-connection basis, using information on the status of each link broadcast throughout the network. Links are marked based on control information in the link state, and the in-call rate adjustment is based on negotiable Quality of Service, QOS, parameters.

Abstract: A novel resource constraint merge scheme combines the requested and acceptable resource constraint sets for an efficient solution to the problem of consolidating preferential resource constraints. This solution is particularly useful in consolidation of preferential resource constraints in ATM cell relay networks, especially LANs and WANs.

Abstract: A communication network transports packetized constant bit rate data from a source to a receiver. To improve the transport of the data across the network, a method is used to enqueue the packets in a buffer prior to playing out the constant bit rate data to the receiver.

Abstract: A method (800, 900, 1000) provides dynamic connection management in integrated communication networks such that an acceptable quality of service (QOS) over an entire duration of a connection is maintained. For example, the present invention facilitates adjustment of the QOS towards a requested level for a permanent voice call, holding a connection intact until a desired path is obtained. Where possible, a new path for the connection provides at least one agreed value that is renegotiated to a more desirable value without degrading the other agreed values.

Abstract: A mechanism and method control software overloads in a communication network system to preserve the throughput capacity of the system in a simple and efficient manner. System load is regulated by accepting, deferring or rejecting work that the system is requested to perform. The criteria used to accept, defer or reject work is based on the relevance of the request and availability of system resources.

Abstract: A combination of an end-to-end closed-loop rate control mechanism for controlling the flow of cells entering a cell relay communication network from an end system, along with a segment traffic control mechanism for protecting the segment against misbehaving or malfunctioning destination end systems provides a novel, more efficient traffic management system and method for cell flow regulation in a cell relay communication network.

Abstract: A device and method allocate bandwidth on internodal links in a communiation network such that worst case maximum delays and worst case average delays in a packet oriented network are guaranteed while providing statistical gains in maintaining predetermined end-to-end delay QOS objectives for different traffic types.

Abstract: An adaptive congestion control device (600) and method minimize congestion using independent congestion level indicators. The invention allows efficient recovery for an integrated packet network that becomes congested and allows a user to utilize the network on a space-available basis when capacity is available.

Abstract: The present invention provides for fast packet information transfer from a first type switching system to a diverse, i.e., different, type switching system by adaptation of a format of each fast packet from the first type switching system to a format that is portable across the second type switching system. For example, the present invention enables transport of fast packets from a fast packet switching system across a cell relay system and vice versa, from a fast packet switching system across an asynchronous transfer mode system and vice versa, and so on.

Abstract: A cell processor and a method for a cell processor (CP) utilize Cell Transit Queues to partition cell processing of cells from a Cell Interconnect in a cell relay network, thereby facilitating cost-efficient cell transmission from a cell interconnect to a node output.

Abstract: A fallback strategy for a system (700) and method (200) is provided for rerouting a call that fails to be established utilizing a first set of constraints in a communication network system. This strategy enables the communication network system to utilize a look-around-first type of preemption that avoids unnecessary preemption and provides alternate routing for a call according to predetermined constraints selected by a user.

Abstract: A device (800) and method (900) are included for providing a high-rate queueing discipline in an information network system having a plurality of traffic classes. The high-rate queueing discipline is based on a scan table-based dequeueing scheme having a scan table that is precomputed and stored in memory, thus facilitating rapid processing of different traffic class information. The device and method are particularly useful in a fast packet system.