Nortel Networks Corporation

Other

Sun Microsystems, Inc.

Network Equipment Technologies, Inc.

Clifford James Buckley

Manfred F Chiu

Anthony Peter Peck

Michael E Grimes

Yerrapalli R Sudhakar

Gregory C Hill

Jens Arne Holten

Steven A Eich

Israel Cidon

Peter J Newman

Raphael J Rom

Asad Khamisy

Amar S Gupta

Gururaj Singh

Willie T Glover

The Intelligent Multiservice Access System (IMAS) enables support for the next generation of virtual connections. Regardless of whether the communications lines coupled to the inputs and outputs of the IMAS are based on SVC, PVC, or a combination of PVC and SVC, the IMAS can support SVCs for a more flexible, timely, efficient, and manageable connection. In the more typical configuration, the loop side of the IMAS is PVC-based because the modems do not support SVC signaling, and the telecommunications backbone side is capable of supporting SVC signaling even though existing DSLAMs do not employ SVC signaling logic. With SVC support, the IMAS assists the ATM network in hand crafting an SVC-based connection almost immediately between end users when the originating end user wants to make a call to a destination end user, and tear down that virtual connection almost immediately when that call has completed. The SVC signaling is performed by a proxy signaling agent that resides in the IMAS to give the appearance to the ATM network in the telecommunications backbone that the loop side supports SVC signaling even though the line is PVC-based.

SVC signaling system and method

An efficient, cost effective method and apparatus for performing resource allocation of available bit rate (ABR) virtual circuit (VC) in an asynchronous transfer mode (ATM) network includes an explicit rate switch process performed at at least one switch of an ABR VC. The process provides a fast and more accurate computation of the number of active VCs in an ATM network. Furthermore, the fair share allocation is calculated at the switch in a way that is efficient and lends itself easily to implementation in hardware. For example, in one embodiment, the fair share is implemented using a series of counters and registers controlled by a state machine. This simple hardware implementation enables fast convergence to a current final state so that timely accurate resource utilization and allocation to the ABR VCs can be determined.

Method and apparatus for explicit rate flow control in ATM networks

Reactive congestion control in an asynchronous transfer mode (ATM) network where the network is formed by the interconnection of nodes each including a forward path for transfer of information from source to destination through the network and a return path for returning congestion control signals. Each source includes a modifiable issue rate unit which issues forward information signals at different rates for virtual channels in response to the presence and absence of congestion signals received on the return path.

Method and apparatus for reactive congestion control in an asynchronous

A portable light-weight utility stand is described which is very useful for supporting a trash bag in an upright manner with its top open to receive the deposit of material therein. The utility stand comprises: (a) a frame member including a bag attachment section and four leg members, (b) a platform attached to and supported by the legs below the bag attachment section, (c) a chute member pivotably attached to the frame and pivotable between first and second positions, and (d) a lid carried by the chute member and being pivotable between open and closed positions. The chute is adapted to secure the top of the open trash bag to the bag attachment section. The platform supports the bottom of the trash bag. The lid is adapted to cover the open top of the trash bag, if desired, until such time as the bag is filled, after which the filled bag may be removed from the utility stand and replaced with a fresh bag. The portable stand is easily assembled and is very sturdy.

Portable utility stand

Growing community of inventors

San Jose, CA, United States of America

Clifford James Buckley