Simplex Time Recorder Co.

Nortel Networks Corporation

Rockstar Consortium US LP

Rockstar Bidco, LP

Rpx Clearinghouse LLC

Michael K Poon

John J Osswald

Simon P Parry

Robert Friskney

Florin S Balus

Robert B Staubitz

Timothy C Repp

Walter P Gauthier

Peter Nikolla

A node comprises a first communications interface to a customer network element, where the first communications interface is part of a group of communications interfaces to the customer network element to provide failover support. The node further includes a network interface to communicate over a trunk group to other nodes, where the trunk group includes a primary trunk and a secondary trunk. Just one of the primary and secondary trunks is active for communicating data units.

Communicating data units in a communications network that provides failure protection

A system for originating connectivity fault management (CFM) frames on non-CFM aware switches is disclosed. In the disclosed system, an OAM (Operations Administration and Management) proxy networking device connected to a core Ethernet network operates with one or more CPE (Customer Premises Equipment) devices to which it is communicably connected to support CFM out to the CPE devices without requiring that the CPE devices themselves implement CFM functionality. The OAM proxy networking device generates Connectivity Check (CC) frames, Loopback reply frames, and Linktrace reply frames for MEPs (Maintenance End Points) or MIPs (Maintenance Intermediate Points) contained in communication ports on the CPEs. These CFM frames generated by the OAM proxy networking device are then sent within messages from the OAM proxy networking device to the appropriate CPE. When the CPE device receives a message from the OAM proxy networking device containing one of these CFM frames, it checks the operability of a communication port indicated by the message. If the port is operable, the CPE device extracts the CFM frame from the message and originates it through the OAM proxy networking device into the core Ethernet network. The OAM proxy networking device further operates to process Connectivity Check frames received from the core Ethernet network and addressed to the CPE devices by maintaining an MEP connectivity database. As a result, these received Connectivity Check frames are dropped without forwarding to the CPE devices.

Method and system for originating connectivity fault management (CFM) frames on non-CFM aware switches

A time recorder includes a digital display and a printer for printing selected information including time, date, comment and number. A removable cover covers programming text which surrounds the display. During programming, the cover is removed to expose the text and accept and change buttons which allow a user to accept or change entries in several printing and other categories. Programming entries are indicated either directly or through codes which are described in the programming text. Customized comments may be generated by a user. A character count is maintained on the display during programming. The display is inverted by the user to allow orientation of the time recorder for table or wall mounting.

Programmable time recorder

Growing community of inventors

Westford, MA, United States of America

Michael K Poon