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AIC INSTALLATION STANDARDS Issued May 2016AT&T Integrated Cloud Revised April 2019

AIC INSTALLATION STANDARDS (AICIS)

Introduction

This document presents detailed requirements covering all AIC infrastructure installations. Requirements are divided into Sections with each sections focused on a key area(s) needed to realize a quality installation. The expectation is that the vendors will understand these requirements and apply them to all AIC installation they deliver. These requirements cover all technical spaces AIC is deployed in which includes CO, SNRCs, IDC, EDC and NTC. As new technical spaces are introduced an effort will be made to examine and extend application of AICIS to this new space. Any reference to standard or industry standards should be interpreted as a reference to TIAA standards. Presented first are the general overall guideline used to craft these detailed requirements.

Overall Guidelines

AIC standards should only include installation requirements that are Critical to Safety and Critical to Service. Any other requirements become best practices/guidance for the installation vendors and will not be enforced

This guideline involves inclusion of only those installation requirements, in AIC Installation standards, that ensure:

1. Safety of AT&T/Vendor employees and 2. Avoiding conditions, caused by poor workmanship, that are highly likely to cause a service

outage within useful life of the platform (3-5 years).

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Issued May 2016 AIC INSTALLATION STANDARDSRevised April 2019 AT&T

CONTENTS PAGE

1. GENERAL................................................................................................................................ 3

1.1 Introduction............................................................................................................................... 31.2 Scope....................................................................................................................................... 31.3 General Requirements.............................................................................................................41.4 Laws, Rules And Ordinances...................................................................................................41.5 Hazardous Waste..................................................................................................................... 51.6 Safety....................................................................................................................................... 51.7 Tools and Precautions..............................................................................................................61.8 Installation Supplier Warranty...................................................................................................61.9 Quality Assurance Programs....................................................................................................61.10 Workmanship..................................................................................................................... 6

2. RACK/EQUIPMENT................................................................................................................. 7

2.1 Placement................................................................................................................................. 72.2 Leveling.................................................................................................................................... 72.3 Securing/Anchoring.................................................................................................................. 72.4 Shipping................................................................................................................................... 9

3. GROUNDING/BONDING..........................................................................................................9

3.1 AIC Grounding.......................................................................................................................... 9

4. INTRA RACK POWER...........................................................................................................10

4.1 Power..................................................................................................................................... 104.2 PDU Installation and load balancing.......................................................................................10

5. CABLING................................................................................................................................ 10

5.1 Cables and Cabling................................................................................................................105.2 Securing Power Cables..........................................................................................................115.3 Power Cabling........................................................................................................................125.4 Power cables AT&T DC Plant Environment............................................................................12

6. LABELING.............................................................................................................................. 14

6.1 Labeling.................................................................................................................................. 146.2 DC power cables....................................................................................................................156.3 Power Labeling....................................................................................................................... 15

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1. GENERAL

1.1 Introduction

1.1.1 This document provides the installation standards for AT&T Integrated Cloud (AIC) build outs in AIC Technical Space environments. This document provides general requirements when doing equipment installation, modification, removals or building work activity in AIC Technical Space.

1.1.2 Roles and Responsibilities:

a) “Installation Supplier” refers to organization performing the requested work activity.

b) “AT&T” refers to the Person(s) requesting the work activity.

1.1.3 The fundamental Guiding Principles of all sections of this document are as follows:

a) AIC Installation Standards should only include those requirements that are Critical to Safety and Critical to Service.

b) Any other requirements will be considered Best Practice/Guidelines but will not be audited by AT&T.

c) These standards and guidelines are written:

1. To ensure the Safety of AT&T and Installation Supplier employees

2. Avoid conditions caused by poor workmanship that are highly likely to cause a service outage within the useful life of the platform (generally, 3-5 years)

1.1.4 AT&T assumes no responsibility for any costs incurred by a given manufacturer or the Installation Supplier in conforming to the requirements of this document. Further, conformance to all requirements delineated in this document does not constitute a guarantee of acceptance of a given Installation Supplier’s product/service for use in AT&T AIC environments.

1.1.5 AT&T reserves the right, without prior notice, to revise this document for any reason.

1.1.6 AT&T reserves the right to audit Installation Suppliers for compliance to this document. Questions concerning the audit process or quality results should be referred to:

AT&T - U.S. Quality Assurance:402 N 3RD STFLOOR 2Saint Charles, MO 63301Attention: Christine [email protected]

1.2 Scope

1.2.1 The requirements contained in this document apply to installations in any AIC Technical Space which is defined as technical space dedicated to housing AIC equipment infrastructure either in stand-alone buildings or space within shared-use buildings.

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1.2.2 If collocated in buildings with existing Legacy Technical Spaces (e.g. COs, SNRCs, NTCs etc.) the AIC Technical Space shall be engineered to be separated from the Legacy Technical Spaces by one-hour fire rated barriers and shall follow applicable NEC and fire codes.

1.2.3 The standards and requirements for site preparation and conditioning for AIC Technical Spaces is included in ATT-812-000-723, AT&T Integrated Cloud (AIC) Technical Space Building Infrastructure Design Requirements.

1.3 General Requirements

1.3.1 The Installation Suppliers shall ensure as part of the evaluation of the installation that all work has been completed in accordance with the AT&T detail specifications, AT&T engineering documents or approved changes to the AT&T detail specifications.

1.3.2 All proprietary documents referenced in this document are available to contracted Installation Suppliers through signed nondisclosure agreements or as detailed in current contracts between AT&T and Installation Suppliers.

1.3.3 Non-AT&T publications referenced herein should be obtained from the originator of the publication.

1.3.4 Comments on this document should be submitted by e-mail to:

AT&T - U.S. Quality Assurance:402 N 3RD STFLOOR 2Saint Charles, MO 63301Attention: Christine [email protected]

1.4 Laws, Rules And Ordinances

1.4.1 The Installation Supplier shall comply with all applicable federal, state, county and local laws, ordinances, regulations and codes.

1.4.2 The Installation Supplier shall comply with all applicable Occupational Safety and Health Administration (OSHA) and Environmental Protection Agency (EPA) regulations when dealing with hazardous materials and other work place hazards.

1.4.3 The Installation Supplier will be responsible for providing all necessary permits from the local Authority Having Jurisdiction (AHJ).

1.4.4 Where applicable, all work performed by the Installation Supplier shall meet or exceed the technical requirements of the National Electrical Code (NEC) and all state, county and local codes.

1.4.5 All work and materials shall conform in every detail to the rules and requirements of the National Fire Protection Association (if in the US), the State Electrical Code (if in the US) and present manufacturing standards. All materials shall be listed by UL and shall bear the UL label.

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1.5 Hazardous Waste

1.5.1 The Installation Supplier shall discuss with the AT&T Representative any hazardous materials existing in the AIC Technical Space and/or hazardous materials to be used on the job and handled per the requirements of this document.

1.5.2 The AT&T Representative shall adhere to guidelines and procedures established by AT&T EH&S, available on the AT&T EH&S (Environment, Health & Safety) web site, http://www.ehs.att.com/, or via contact to the AT&T EH&S Hotline at 1-800-KNOW-EHS (1-800-566-9347).

1.6 Safety

1.6.1 The Installation Supplier shall be entirely responsible for the safety and instruction of its employees or representatives.

1.6.2 The Installation Supplier shall take precautions to avoid harm to personnel, equipment and building (e.g., cutting installed threaded rod).

1.6.3 The Installation Supplier shall immediately report to the AT&T Representative any accident, outside agency inspection or hazardous condition, including:

a) Any accident or injury that occurs to employees or subcontractors of the Installation Supplier while on AT&T premises.

b) Any OSHA inspection or citations issued to the Installation Supplier while on AT&T premises.

1.6.4 Floors and work area shall be kept free of all potential hazards. The Installation Supplier shall avoid creating a slip or trip hazard.

1.6.5 All waste materials, such as waste paper, foam, plastic, cloth bags, packing boxes, packing material and similar material supplied during the installation, shall be removed from the building by the Installation Supplier on a daily basis (or more frequently if required).

1.6.6 All walkways, entrance and exit routes through the equipment area shall be kept clear of tools, equipment, equipment packaging, cable, etc. Caution signs/cones shall be posted where needed.

1.6.7 The Installation Supplier shall not obstruct doorways, equipment aisles, corridors, stairs, fire exits, fire extinguishers and fire-fighting equipment, pull box alarms and electrical breaker/fuse panels.

1.6.8 If the Installation Supplier has any questions in regard to safety, contact the AT&T Representative.

1.6.9 The Installation Supplier shall ensure the following during the installation:

a) Combustibles are to be removed from equipment areas and placed under fire retardant / anti-static tarps in a designated staging area when not being installed.

b) That apparatus or materials are not stored in equipment aisles, corridors, stairs or fire exits.

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c) That Installation Supplier’s personnel adhere to AT&T’s no-smoking policy.

d) That precaution is taken to prevent fire resulting from the use of temporary wiring, test wiring, lamps, soldering irons and other similar equipment.

e) That no activity cause the activation of smoke alarms or other sensors.

f) That Installation Supplier personnel are familiar with the building’s evacuation features.

g) That Installation Supplier personnel are familiar with the location and use of the fire extinguishing equipment in the installation area.

h) When there is any doubt, check with AT&T Representative for site-specific procedures or compliance.

1.7 Tools and Precautions

1.7.1 The Installation Supplier shall provide its own tools.

1.7.2 Extension cords shall be NRTL listed, three conductor, 14 gauge or larger, commercial grade.

1.7.3 All battery and AC powered tools shall be grounded or double insulated.

1.7.4 The Installation Supplier shall remove all personal jewelry when performing any installation activities.

1.7.5 Metal framed ladders, metal desks and metal chairs shall not be allowed in the immediate vicinity of AIC equipment.

1.7.6 Non-conductive measuring devices (i.e. measuring tapes) shall be used in the vicinity of working AIC equipment.

1.8 Installation Supplier Warranty

1.8.1 The Installation Supplier shall provide warranty as per AT&T negotiated contracts.

1.9 Quality Assurance Programs

1.9.1 The Installation Supplier shall conform to AT&T’s Quality Assurance Program as specified by the AT&T’s Quality Assurance organization in support of these requirements.

1.10 Workmanship

1.10.1 The Installation Supplier must be proficient in using the manufacturer’s products, adhere to the engineering, installation and testing procedures and utilize the approved products and devices.

1.10.2 The Installation Supplier shall be experienced in all aspects of this work and may be required to demonstrate direct experience on systems of similar scope and size and shall have demonstrated competency for the job assigned.

1.10.3 All cut materials that shall be installed shall have any sharp or rough edges finished with a file or grinder and performed outside of the office.

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1.10.4 Additionally, any scratches or blemishes to the materials exposing bare metal shall be touched up with the appropriate finish coating.

2. RACK/EQUIPMENT

AIC Rack/Equipment Requirements

2.1 Placement

2.1.1 Rack Placement of Hot / Cold Aisles: Racks shall be arranged with alternating rows fronts of racks facing each other in a row to create ‘cold’ and ‘hot’ aisles.

2.1.2 Uninterrupted rack rows should not exceed 40 continuous feet in length. Racks shall be aligned according to the clearance recommendations. (Per ATT –812-000-723 AT&T integrated Cloud (AIC) technical Space Building Infrastructure Design Requirements)

2.1.3 Computing Equipment Placement: Equipment shall be placed in racks with ‘cold’ air intake at the front of the rack. Blanking panels shall be installed in empty rack spaces to improve the functioning of the airflow. Special arrangements and exceptions will be made for large computing equipment.

2.1.4 Placement relative to floor tile grid: When placed on access floor, racks shall be arranged so that they permit tiles in the front and rear of the racks to be lifted. Racks shall be aligned with either the front or rear edge along the edge of the floor tile. Racks shall be placed such that the threaded rods that secure the racks to the slab will not penetrate an access floor stringer.

2.1.5 For details of Rack-Roll/Rack-Stack refer to Reference ATT-TELCO-IS-JA-000-004-121.

2.2 Leveling

2.2.1 Racks located within Low Seismic Risk regions shall rest on the floor surface with or without the use of leveling feet and caster assemblies.

2.2.2 Racks located within High Seismic Risk regions shall rest on the floor surface without the use of leveling feet or caster assemblies.

2.2.3 Racks levelers shall be deployed as per manufactures guidelines.

Note: Seismic Risk regions can be investigated at http://iecss.web.att.com/zones/ZoneForm.cfm

2.3 Securing/Anchoring

2.3.1 Equipment deployed within High Seismic Risk regions shall be installed within GR-63-CORE Seismic Zone 4 certified racks Equipment deployed within Low Seismic Risk regions shall be deployed within racks rated for IBC and UL rated (minimum requirement). Worst case conditions in the IBC Seismic 4 standard shall be considered when performing the modeling test.

2.3.2 Racks shall be plumb, level and junctioned together using the appropriate manufacturer supplied hardware. It assures that the racks are attached and aligned securely to each other,

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http://iecss.web.att.com/zones/ZoneForm.cfm


supporting and dispersing weight equally for the maximum capacity. Uprights of adjacent racks shall be joined together per manufacturer’s specifications to form a continuous lineup.

2.3.3 Low Seismic Risk regions: Side junctioned racks located within an equipment lineup shall be anchored with bolts to the floor using a minimum of two AT&T approved floor anchors (refer to Figure 1). Free standing non-junctioned racks shall be anchored with bolts to the floor using a minimum of four AT&T approved floor anchors (refer to Figure 1).

2.3.4 Racks located within High Seismic Risk regions shall be anchored with bolts to the floor using a minimum of four AT&T approved seismic floor anchors. Refer to Figure 2.

FIGURE 1 -- Cabinet Anchoring – Low Seismic

FIGURE 2 -- Cabinet Anchoring – High Seismic

2.3.5 Racks shall not be mechanically connected to any suspended grid system. This includes ceiling suspended and stanchion suspended system. This does not include stubbed up systems supported from the tops of racks or stanchions.

2.3.6 In lineups where racks are the primary or only support for overhead cable rack, the equipment rack shall be secured to building floor with four anchors and junction to adjacent racks. Refer to Figure 2.

2.3.7 Where equipment racks shall not be side junctioned, a space of 5 inches minimum shall be provided between the adjacent racks or building walls, columns or other structural members.

2.3.8 No part of any equipment installed within or apparatus attached to the rack shall extend beyond the footprint of the rack.

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2.3.9 The fronts of the base of all racks in a common lineup shall be aligned. An exception to this requirement is permitted for racks that are shown on the floor plan to be out of alignment with the other racks in the lineup. Exceptions should only be made on an as-needed basis and framework extension beyond existing racks in the lineup into the front or maintenance aisle shall not exceed 3 inches.

2.3.10 For more detailed information on Equipment framework anchoring (raised access floor) – refer to ATT-TP-76402, Section 10.

2.4 Shipping

Reference ATT-TELCO-IS-JA-000-004-121, “Potential Rack & Issues” Job Aid Rack-n-Roll Feasibility Check List

2.4.1 From Manufacture to VAR Facility: The empty equipment rack shall be shipped from the rack manufacturing warehouse to the VAR facility on standard shipping pallet with cardboard protective corners, cardboard top plate and shrink-wrap.

2.4.2 From Value Added Resource (VAR) to Site: VAR is to provide a shock resistive pallet designed for AIC specific racks deployments. VAR to also provide a ramp capable of allowing AIC racks to be rolled from said pallet, if applicable. The shock pallet is to be returned to the VAR facility once the rack has been removed from the pallet. More details can be found in Rack & Roll Checklist ATT-TELCO-IS-JA-000-004-121.pdf.

2.4.3 The VAR Facility is to palletize and crate the assembled equipment rack for shipment to installation site.

2.4.4 Tilt/shock indicators shall be attached and activated on the shipping container to indicate potential equipment damage during transit. The VAR facility is to attach tilt/shock indicators on the shipping container, as per manufacturer’s instructions, in a manner that allows for front-to-rear and side-to-side tilt monitoring.

3. GROUNDING/BONDING

3.1 AIC Grounding

3.1.1 All equipment, racks, and overhead racking (if used) shall be properly bonded to the site grounding system to insure safety of personnel and reliability of service. Rack doors shall be bonded to the racks.

*Note: If the cabinet has threaded hole rails and the unit is fused at less than 30amps, thread turning screws will provide proper grounds. If the cabinet uses cage nuts for mounting the chassis, then a separate chassis ground to the ground bar provided with the cabinet shall be utilized.

3.1.2 At a minimum, the grounding installation must comply with all applicable articles of the current issue of the National Electrical Code NFPA-70.

3.1.3 Grounding conductors shall be sized to handle the maximum possible AC and/or DC fault current.

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3.1.4 The Installation Supplier shall apply a thin coat of NO-OX-ID “A” anti-corrosive compound to all connections of dissimilar metals to inhibit future corrosion.

Note: Per the instructions from the No-ox manufacturer, terms used to apply No-ox include "thin", "light", and "the ideal amount is 1 molecule thick". Our Hyground connectors specify a minimum thickness of 0.030” (30 mils). To be consistent with this we would recommend the same minimum thickness underneath the lug.

4. INTRA RACK POWER

4.1 Power

4.1.1 All AIC Power installation work shall be in accordance with the NEC® and NFPA.

4.2 PDU Installation and load balancing

4.2.1 Equipment shall be plugged into ports assigned by Design Team.

4.2.2 Once AC devices are powered-up and placed under load, the PDU’s LED readout (or management tools) shall be reviewed to determine if the load is evenly distributed across the electrical phases and do not exceed 80% of the PDU branch capacity. If the load is not distributed equally across the three (3) electrical phases, in consultation with the design team, care shall be taken to re-locate the power-plugs to other electrical phases. This approach should also be taken to balance loads across any single phase PDU (CDU) branches and do not exceed 80% of the PDU branch capacity.

4.2.3 Separate A&B diversely sourced protected PDUs shall be provided. Exception: When the equipment rack is designed exclusively for single power feed equipment.

4.2.4 Each PDU shall be engineered with a dedicated branch supply circuit sourced from a PPSC and load managed, not to exceed 80% of the PDU circuit breaker.

4.2.5 Each PDU shall be installed in a rack per manufacturer’s recommendations. PDU’s shall be placed so as to not impede the removal of any equipment from the rack.

5. CABLING

5.1 Cables and Cabling

5.1.1 Communication cables/jumpers shall be compliant with ANSI/TIA Standards, 10/40/100 technology, and Method B (Key up Key up).

5.1.2 MPO mated connectors shall include alignment pins.

5.1.3 LC connectors shall permit polarity reversals in the field.

5.1.4 OM4 communications channel shall not exceed 150m limit.

5.1.5 Cables/jumpers shall be protected from sharp edges, hot surfaces, and supported to prevent excessive strain on the connectors while maintaining proper bend radius.

5.1.6 Standard inside bending radius (industry standards), by cable type, shall be observed at all times unless specified differently by the manufacturer.

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Note: Refer to TP76300 Section J Paragraph 2.10 Items 1 thru 11.

5.1.7 Cables shall be routed in engineered pathways.

5.1.8 Standing on or applying excessive stress/pressure to cable is prohibited.

5.1.9 Every attempt shall be made to segregate communications cables and power cables.

5.1.10 Cables/jumpers shall be ordered in the shortest standard stocked length to minimize slack.

5.1.11 Inter-rack cable slack storage should be avoided within the racks.

5.1.12 Installed copper backbone cables shall be certified to industry standard specifications per cable type.

5.1.13 Installed fiber backbone cables shall be certified via 100% Tier 1 testing. Tier 1 testing is defined by the requirements called out in TIA-526-7 for Singlemode Fiber Optic Cable and TIA-526-14 for Multimode Fiber Optic Cable or the cable manufacturer’s loss claim, whichever is more stringent (i.e. Commscope Systimax Link Loss Calculator.).

5.1.14 Factory certified fiber jumpers do not require inspection/scope or loss testing.

5.1.15 All fiber end faces shall be dry cleaned before mating.

5.1.16 Unterminated fiber shall have dust protective caps installed.

5.1.17 All test documentation shall be retrieved directly from test unit and turned over to AT&T in electronic .pdf format for archiving.

5.1.18 Ends of all bare wire/cable shall be insulated during all work activities.

5.1.19 Failed and Unused jumpers shall be removed with appropriate approval.

5.1.20 Communications cables shall be secured to provide proper support with AT&T approved Hook and Loop material within the AIC footprint.

5.1.21 Plenum rated cables shall be utilized where required by Authority Having Jurisdiction (AHJ).

5.1.22 All cables/jumpers shall be factory connectorized.

5.1.23 Cable/jumpers shall be dressed to ensure containment within the equipment frame footprint and shall not block access to future cabling, shelves and hardware.

5.1.24 Cable pathway fill ratios shall be maintained as per the manufacturer’s guideline for the specified product.

5.1.25 Cable Grooming, Combing and Bundling shall be applied as follows:

a) End of Row FDF cables shall be bundled at the top of the Interbay Management Panel (IMP) attached at the side of the FDF. Cables shall feed vertically down along the outside of the IMP spools utilizing a positive drip loop feeding upward toward the appropriate panel location. See ATT-C-60000-E-10 for illustration.

b) Equipment cabinet cables shall be run in bundles of identical cable types and run parallel not braided. Cables shall be secured with AT&T approved Hook and Loop materia.

5.1.26 All CAT 5e/6 cables shall be gray.

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5.2 Securing Power Cables

5.2.1 Power cables shall be secured within 10 inches of the termination point and every 24 inches thereafter.

Note: refer to TP76300 Section M Subsection 8 for power cable securing requirements outside of the AIC Rack.

5.2.2 Power cords and cables shall be secured to the vertical and horizontal cable management systems, dressed to avoid congestion and not impede air flow through the rack.

5.2.3 Lacing bars shall be placed so that all field serviceable items can be easily accessed.

5.2.4 AC power cords and cables shall be secured to provide proper support with AT&T approved Hook and Loop material within the AIC footprint.

5.2.5 DC power cables shall be secured to provide proper support with 9-Ply wax cord material within the AIC footprint.

5.3 Power Cabling

5.3.1 When cabling AC hardware to the rack’s PDU, the power cord shall be sized per manufacturer’s power requirements, these cords shall be ISO, TL or UL compliant.

5.3.2 The equipment AC power cords shall be furnished in the correct stock length (1 foot increments) to minimize slack.

5.4 Power cables AT&T DC Plant Environment

5.4.1 DC power cables within the AIC footprint shall be red for -48 battery and black for + ground return and shall be textile jacketed. Approved non textile jacketed cables shall be protected where secured or banded.

5.4.2 Approved non-standard color DC power cables or cables that are reversed in color for i.e. Red + Black -, shall have red and black tape or heat shrink (preferred) applied at the source to meet Telco DC plant color standards.

5.4.3 Damaged cables within the AIC equipment rack footprint shall be replaced.

5.4.4 UL approved connectors shall be used and the proper tool and die sets must be used for DC power connectors. Compression connectors shall be properly crimped per manufacturer’s instructions.

5.4.5 Tool and die sets shall be calibrated as required by the manufacturer.

5.4.6 Connections shall be made to ensure proper electrical operation of equipment and use appropriate equipment Torque requirements and include Torque markings for lug type connections.

5.4.7 Intra-rack DC Cables and fuses shall be sized according to requirements for the voltage drop and amperage based on distance and L2 drain requirements.

5.4.8 Polarity and lack of voltage shall be verified before terminating cables.

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5.4.9 Battery and return cables shall be paired and associated with the same return bus as the fused position.

5.4.10 Verification of lack of current, with a clamp on ammeter, shall be performed before disconnecting power leads.

5.4.11 All AIC DC powered racks shall be fed from a DC fuse/breaker panel, installed in the top of rack, (output side of fuse/breaker panel) wiring shall meet manufacturer’s L2 drain requirements

5.4.12 The Installation Supplier shall apply a thin coat of NO-OX-ID “A” anti-corrosive compound to all connections of dissimilar metals to inhibit future corrosion

Example of Copper Cable Penciling

Example of Fiber Cable Penciling

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6. LABELING

6.1 Labeling

6.1.1 Labels shall not be hand written.

6.1.2 Labels shall not be modified by placing a designation label onto an existing label.

6.1.3 Lettering shall allow for readability and maximum information.

6.1.4 Racks shall be labeled with AT&T Job Order number at the top left, front & rear. For Pre-assembled racks, an additional label shall be placed by the VAR stating “Assembled:” and the VPMO Number at the top left, front & rear. (i.e., ‘Assembled: 123456’).

6.1.5 Racks shall be labeled using ¾” Font with Rack number & Name (where applicable) at the top front & rear, close to the center. “Arial” font shall be used unless the labeling equipment does not support the Arial font. Alternative fonts may only be used if labeling equipment is not equipped or upgradable to “Arial” font.

6.1.6 Racks shall be labeled with Power Source at the top right, front & rear.

6.1.7 Rack Units (Shelves/Devices) shall be labeled with the machine or host name, shelf number or rack unit number on the front & rear in a clearly visible location consistent with other racks in the build. Any shelves added to existing racks shall also include the AT&T Job Order Number on the front and rear.

6.1.8 Equipment mounted in racks shall have the designation labeled on the rack door/cover/finishing detail on the front and the inside rack framework on the rear.

6.1.9 Asset Tags provided to and installed by the VAR shall be placed uniformly on the front or rear of the units in a visible location when possible. When equipment does not allow for placement on the front or rear of the unit, the top of the unit is acceptable.

6.1.10 PDUs shall be labeled at the 1st position of each plug grouping.

Note: If the PDU positions are already stenciled/satisfied via the manufacturer and can readily be viewed, then it does not have to be duplicated by the installer.

6.1.11 PDUs shall be labeled to identify load diversity (Load A, B etc.).

6.1.12 AC power service rack circuits shall be designated beside the circuit breaker or on the designation card with the location of the circuit being served and the circuit breaker amperage.

6.1.13 Every connecting cable/jumper that connects to a device or appliance shall be labeled, permitting easy identification, tracking/tracing and troubleshooting for connectivity issues.

a) All cable/jumper ends shall be labeled per the OEM provided physical port identifiers.

b) Flag Labels shall be placed neatly dressed and readable approximately 3” to 10” from the connector, fanned, placed in a manner to not cause congestion or require twisting of the cable. Longitudinal Labels are not permitted.

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c) Intra-Rack cables/jumpers shall contain the Rack Unit Number, Slot, & Port with the Near end assignment 1st, Far end 2nd. Any cables/jumpers added to existing racks shall also include the AT&T Job Order Number.

d) Inter-Rack cables/jumpers shall contain the Rack Location, Rack Unit Number, Slot & Port with the Near end assignment 1st, Far end 2nd. Any cables/jumpers added to existing racks shall also include the AT&T Job Number. Rack location may be identified as Rack Name, Grid Location, FIC or Relay Rack location to be consistent with the Design Planning Organization’s method of designating Tech Space floor location in the site Design document.

e) Duplex fibers shall have a single flag label on one leg of the duplex (TX on straight through at both ends) (TX at one end and RX at opposite end when the fiber flips).

f) Fiber termination panels shall have far end termination designations (frame location, panel and port) placed on the front of the panel or manufacturer provided assignment card. Flag type labels are not required on fibers terminated at the rear of the fiber termination panels.

g) There is no requirement to label temperature sensor cables.

h) A multi-entity fiber cable flag label may be utilized under the following conditions:

1. When deploying structured cable management

2. Utilizing a fiber cassette module as its mid-entity

3. A fiber connection consisting of multiple cable ‘hops’ (NE - cassette - NE)

6.1.14 AC power cables/cords shall be labeled with AT&T approved 145 P tags or flag tags at both ends with near and far end information.

6.2 DC power cables

6.2.1 DC Power Cables, from BDFBs to the Network Element SPDUs, shall be labeled at both ends with AT&T approved 145 P-Tags providing.

6.2.2 DC Power Cables, from Network Element SPDU to the individual Rack Unit’s power connection, shall be labeled with AT&T approved 145 P-Tags at the Rack unit. The Fuse Designation card will provide the far end information for the outputs at the SPDU end. See Figure 3, 4, 5, 6, 7.

6.3 Power Labeling

6.3.1 Labeling shall also follow other guidelines outlined in the labeling section above.

6.3.2 Power source shall be labeled on the outside (front and rear top) of the rack at the time of installation.

6.3.3 Each PDU shall be labeled indicating its electrical source (RPP) and its terminating circuit within that RPP. The plug side of the PDU shall be labeled indicating its source receptacle

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FIGURE 3 -- Power/Ground cables on the right. 1 P-tag for each -48v/Rtn combo. Also notice the Twin-Ax and Cat-6 cables on the left

FIGURE 4 -- -48v and Return cables at the fuse panel. 18 fuses per panel for 36 positions. Area too congested for P Tags

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FIGURE 5 -- Congested Labels at fuse panel, do not follow

FIGURE 6 -- Fuse designation card at fuse panel

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FIGURE 7 -- Front of a Rack. Fuse designation cards at right and left of Rack number at top.

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