Nortel Networks Corporation

Avaya Inc.

Rockstar Consortium US LP

Rpx Clearinghouse LLC

Richard Brand

Tal Isaac Lavian

Franco Travostino

Paul Allen Bottorff

Phil Wang

Ramesh Durairaj

Guyves Achtari

Huiwen Li

Kent Felske

Eric Bernier

Norival R Figueira

Norival Figueria

An optical communication device comprises an input/output configured to be coupled to an optical communications line, and a passive optical loopback module coupled to the input and configured to receive optical signals from the input/output, the loopback module being further configured to reflect incoming signals of a test wavelength to the input/output.

Passive optical loopback

Network resources allocated for particular application traffic are aware of the characteristics of L4+ content to be transmitted. One embodiment of the invention realizes network resource allocation in terms of three intelligent modules, gateway, provisioning and classification. A gateway module exerts network control functions in response to application requests for network resources. The network control functions include traffic path setup, bandwidth allocation and so on. Characteristics of the content are also specified in the received application network resource requests. Under request of the gateway module, a provisioning module allocates network resources such as bandwidth in optical networks and edge devices as well. An optical network resource allocation leads to a provisioning optical route. Under request of the gateway module, a classification module differentiates applications traffic according to content specifications, and thus creates and applies content-aware rule data for edge devices to forward content-specified traffic towards respective provisioning optical routes.

Content-aware dynamic network resource allocation

An optical network unit (ONU) interconnected by passive optical network (PON) equipment to an optical line terminal (OLT) is identified using secondary modulation of the optical carrier to impress an identifier of the ONU onto the carrier. This resolves a recurring ONU failure mode detection problem caused by failure of a laser driver that causes the ONU to be stuck in an on state.

Method and apparatus for the transmission fault detection in an access network

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Palo Alto, CA, United States of America

Richard Brand