Abstract: A network shelf system is disclosed, which includes a network mounting shelf for mounting networking components and a rotatable swivel mounting assembly, for a patch panel. There is a support shelf disposed intermediate associated support brackets, which mount the network shelf system to a wall or like structure. The rotatable swivel mounting assembly is rotatably mounted to and extends between the support brackets. Also, disposed intermediate the support brackets and below the mounting shelf may be a patch panel, which is securely attached to the rotatable swivel mounting assembly at the patch panel's center line to allow the patch panel to be rotationally positioned between zero and one hundred and eighty degrees to provide access to punch down blocks, located on the posterior side of the patch panel, from either above or below the network shelf system or any position therebetween.

Abstract: A computer system having an arbitration mechanism for controlling the coupling order between a plurality of requesters and a plurality of resources, where each resource has an associated resource type. The arbitration mechanism includes a plurality of request processing units, each associated with one of the plurality of requesters. The request processing units receive resource type request signals from an associated requester. The arbitration mechanism also includes a plurality of grant processing units, each associated with one of the plurality of resources. The grant processing units monitor a status signal from its associated resource. The arbitration mechanism further includes a common broadcast medium which is coupled to all of the request processing units and grant processing units.