Standards | AT&T 76450 instruction

Common Systems Connection Standards	AT&T Services, Inc
Date: August 31, 2007	ATT-TP-76450, Issue 9

As an exception, there are some new network elements that employ high DC current demands that when collectively configured in a packaged bay arrangement may exceed available fuse position capacities found at the BDFB. In a method to utilize the existing AT&T - DC distribution architecture, these individual network elements may be independently and directly fused at the BDFB via an SPDU. In these instances, direct feeds to the BDFB may be considered appropriate. However, the individual network element shall include an on/off /power cut off to locally disconnect the power from the bay components. In applications where a bay mounted SPDU is desired, AT&T has approved products designed to serve in that capacity and still allow

for independently fused services.

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AT&T 76450 manual Standards

Contents

Canceled/Superseded Doc N/A Pre-assembled versus Field Assembled Network Equipment RequirementsPurpose Scope Additional AT&T Requirements ATT-TP-76450 Internet Web Site Product Evaluation Process Adherence to AT&T Standard Suppliers Reasons for Reissue Nominal -48v DC AC Powered EquipmentRedundant Power Feeds Power Feeds List 1X Drain Battery Return ConductorDrain Definitions List 1 Drain Two Hole Connections Location of Power Terminations1 16 AWG Stranded Power Cable and Larger Size conductor Acceptable termination Associated Listings 3 18 AWG Power Cable and SmallerVisual Power Alarms and Status Indicator Power Distribution Delivery Fusing of Capacitors Individually Mounted PDU NE Integrated Power DistributionDirect Bdfb Power Delivery Standards Redundancy of timing inputs Synchronization/Timing StandardsTermination of timing leads Clock output lead cabling Output card exhaustion Alarms TL1 / TCP-IP TBOS/TABS Fiber Attenuators Fiber See Figure Copper DS1 Cross-Connect Wire Central Office Copper Wire and Cable Softcopy Documentation Vendor DocumentationUnusual Cable Types Protection of Cable and Jumpers Personnel Injury and Equipment Damage Warnings Alarm/Trouble Shooting GuideHard Copy Documentation Craft Interface Instructions Revision History Consistent Terminology throughout DocumentationConsistent Terminology between Documentation and Platform Revision Numbering Test Streaker Cards Other interconnection requirementsList of Documentation Equipment lighting Process Appendix a ATT-TP-76450 Checklist Instructions and ProcessInstructions Page Power Interconnection Standards Alarm Standards Part & N/A Footnotes Rqmt# Comment Vendor Documentation Document Number Document Description Appendix C References Appendix E Acronyms Appendix D ATT Contact List