Nortel Networks 10292FA, 10396EA manual Glossary

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56Glossary

CD-ROM

compact disc read-only memory

A compact disc with pre-recorded data, normally used in large database-type applications such as directory, reference, or data retrieval.

channel

A communications path or the signal sent over that path. By multiplexing several channels, voice channels can be transmitted over one optical channel.

CO

central office

A major equipment center designed to serve the communication traffic of a specific geographical area.

configuration

The relative arrangements, options, or connection pattern of a system and its subcomponent parts and objects.

configure

The process of defining an appropriate set of collaborating hardware and software objects to solve a particular problem.

CWDM

coarse wavelength division multiplexing

A technology that allows two or four optical signals with different wavelengths to be simultaneously transmitted in the same direction over one fiber, and then separated by wavelength at the distant end.

dB

decibel

A unit of measure indicating relative optic power on a logarithmic scale. Often expressed to a fixed value, such as dBm (1 milliwatt) or dBµ

(1 microwatt).

dBm

decibels above one milliwatt

212257-B

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Contents Installation and Networking Guidelines for Optical Routing Copyright 2002 Nortel Networks 212257-BInstallation and Networking Guidelines for Optical Routing Canada requirements onlyNortel Networks Inc. software license agreement Installation and Networking Guidelines for Optical Routing 212257-B Contents Chapter Installing the shelf, OADM, and Omux ContentsFigures Figures 212257-B Tables Tables 212257-B Preface Component FunctionPreface Before you beginHard-copy technical manuals How to get help Technical Solutions Center TelephonePreface 212257-B Chapter Describing the optical routing system Wavelength division multiplexingParts of the optical routing system Gigabit interface converter descriptionDescribing the optical routing system Parts of the optical routing systemOptical add drop multiplexer description Cwdm Gbic transceiver and labelNetwork add/drop ring application Cwdm Oadm network and equipment side connectionsCwdm Oadm ring configuration example Optical multiplexer/demultiplexer descriptionCwdm OMUX-4 Cwdm Omux in a point-to-point application Cwdm OMUX-8 network and equipment side connectionsCwdm Omux point-to-point configuration example Cwdm Omux in a ring applicationCwdm Omux ring configuration example Describing the optical routing system 212257-B Chapter Calculating transmission distance About transmission distance and optical link budgetCalculating transmission distance How to calculate expected loss budgetHow to calculate maximum transmission distance Point-to-point network configuration example Point-to-point transmission distancePoint-to-point maximum transmission distance calculations Point-to-point signal loss valuesMesh ring transmission distance Mesh ring network configuration Mesh ring signal loss values Mesh ring maximum transmission distance calculationsHub and spoke network configuration Hub and spoke transmission distanceHub and spoke signal loss values Hub and spoke maximum transmission distance calculationsExceeding class 1 power level warning Chapter Installing the shelf, OADM, and OmuxPreparing for installation Electrostatic discharge Installing the shelf, OADM, and OmuxEnvironmental and physical requirements Installing the shelf Inserting a Cwdm Oadm or a Cwdm Omux Shelf with plug-in module in 19-inch rackCabling a Cwdm Oadm or a Cwdm Omux Cabling a Cwdm OadmCabling a Cwdm Oadm Cabling a four-channel Cwdm Omux Cabling a Cwdm OMUX-4Cabling an eight-channel Cwdm Omux Cabling an Cwdm OMUX-8 Removing a Cwdm Oadm or a Cwdm Omux Appendix a Cwdm Oadm specifications Cwdm Oadm specificationsAppendix a Cwdm Oadm specifications 212257-B Appendix B Cwdm Omux specificationsCwdm Omux specifications Appendix B Cwdm Omux specifications 212257-B Appendix C Handling and cleaning fiber optic equipment PrecautionsTools and Materials Cleaning Fiber Optic ConnectorsAppendix C Handling and cleaning fiber optic equipment Cleaning Single SC and FC Connectors Cleaning Duplex SC Connectors Cleaning Receptacle or Duplex Devices Page Glossary Glossary Dwdm See optical fiber Group of circuits connected at one point on a network See MMF Ndsf An optical wavelength band for WDM optical communications Device that does not require a source of energy to function See SMF WDM Glossary 212257-B Index Cwdm OmuxIndex OMUX, CwdmIndex Index 212257-B