Nortel Networks Corporation

Ciena Corporation

Marko Nicolici

Michael Reginald Bishop

John Clayton Atkinson

Daniel Rivaud

Simon John Shearman

Bonnie Lynne Mack

Simon J E Shearman

Terence Arthur Graham

Peter Ajersch

Kamran Rahmani

Roger Carroll

Chander Prakash Gupta

Behzad Mohajer

Douglas B Cross

Farid Aziz

Donald Lentz

Thomas Charles Currie

Kalvin W Korpela

Amrish Patel

Michele Low

Ken McFarlane

Edmund Gillespie

A network element include one or more modules each supporting one or more pluggable modules; and a first manifold and a second manifold each configured to connect to a conduit associated with a coldplate, wherein one of the first manifold and the second manifold is an inlet manifold and the other is an outlet manifold for a cooling fluid that flows through the conduit to cool the one or more pluggable modules. The one or more pluggable modules can be each a pluggable optical module that is one of compliant to any of XFP, SFP, XENPAK, X2, CFP, CFP2, CFP4, CFP8, QSFP, QSFP+, QSFP28, OSFP, and QSFP-DD and have a housing that has dimensions similar to any of XFP, SFP, XENPAK, X2, CFP, CFP2, CFP4, CFP8, QSFP, QSFP+, QSFP28, OSFP, and QSFP-DD.

Liquid cooling high-density pluggable modules for a network element

An outdoor, hardened telecommunications clamshell platform includes a base half and a top cover half. The platform also includes a Printed Circuit Board (PCB) disposed between two cooling plates within the platform, and a heat distributing mechanism surrounding the PCB within the platform and configured to distribute heat substantially evenly between the base half and the top cover half.

Hardened, telecommunications clamshell platform with heat load sharing between both halves of the platform

Disclosed is an apparatus and method for connecting a power feeder cable at a point for convenient operator access to an electrical subsystem located inside of a telecom equipment assembly. According to one embodiment, the terminal connection of the power feeder cable to the power entry point is positioned so as to be conveniently accessible to an operator from the telecom equipment aisle. According to another embodiment, a linking bus structure comprising, a first connector, a conducting path and a second connector, is mounted inside the telecom equipment assembly with the first connector positioned at the front panel of the telecom equipment assembly and conveniently accessible to an operator from the telecom equipment aisle. The apparatus and method are useful for overcoming difficulties normally encountered during inspection and maintenance of the connection of the power feeder cable at its terminal connection in a telecom equipment assembly.

Front access power landing design

A method and apparatus is disclosed for acoustic noise reduction using fan speed control. The acoustic noise reduction using fan speed control includes a plurality of temperature detectors disposed at a plurality of locations within an electronics equipment enclosure, each detector having an associated setpoint temperature. An error value is determined for each temperature detector, the error consisting of the difference between the detected temperature and the associated setpoint temperature. The maximum error among all error values is then identified and the operating speed of a cooling fan in is set in response to this maximum error. Advantages include providing a fan speed directly related to electronics temperature which inherently accounts for higher ambient temperatures, enclosure altitude, electronics power consumption, and air filter clogging. The acoustic noise reduction using fan speed control is particularly useful for overcoming the need to overcompensate fan speed, thereby resulting in higher than necessary noise levels in order to accommodate worse-case conditions known in the art.

Acoustic noise reduction using fan speed control

The invention refers to a telecommunications system comprising a module rack that defines a core bay, a service plane and a rack interface plane where the service plane is transverse to the rack interface plane. The core bay is in part bounded by the service plane and the rack interface plane. The telecommunications system also comprises a series of electronics modules each defining an electronics orientation plane where each of the modules includes two opposed cooling surfaces oriented substantially parallel to the electronics orientation plane. Each of the electronics modules is removably secured within the core bay. The series of the electronics modules forms an array such that their electronics orientation planes are substantially perpendicular to both the rack interface plane and the service plane. The array also defines at least one coolant stream passage across each cooling surface. Further the telecommunications system includes a coolant movement means for moving a coolant through the coolant stream passages and across the rack interface plane. As such, the coolant convects heat away from the cooling surfaces of electronics modules more efficiently and effectively than found in the prior art as it, amongst other things, shortens the distance over which the inlet coolant is required to travel to cool the same functional density and provides a coolant to the passage at approximately a uniform temperature for each module.

Telecommunications system

Growing community of inventors

Ottawa, Canada

Marko Nicolici