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From the Clean Room to the Great Outdoors

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From The Clean Room to the Great Outdoors: Deploying Telecoms Equipment in hostile Environments presented by Ronan Kelly - ADTRAN.

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From the Clean Room to the Great Outdoors

  1. 1. © 2015 ADTRAN, Inc. All rights reserved. 1 From The Clean Room to the Great Outdoors Deploying Telecoms Equipment in hostile Environments
  2. 2. © 2015 ADTRAN, Inc. All rights reserved. 2 The Journey Exchange Deployment Technology: ADSL2+ Homes Passed: 3,000 – 40,000 Service offering ≤ 24Mbps FTTCabinet Deployment Technology: VDSL2 Subscribers: 100 – 400 Service offering ≤ 100Mbps FTT-DP / FTTBasement Technology: G.fast Subscribers: 1 - 96 Service offering ≤ 500Mbps High Low Cost Per Subscriber Time to Market Phase 1 Phase 2 Phase 3 Fast SuperFast UltraFast
  3. 3. © 2015 ADTRAN, Inc. All rights reserved. 3 The Clean Room  Air Quality Control - ISO 14644-1 & ASHRAE standards - Particles per Cubic Meter - Humidity levels - Temperature  Power - Source Diversity - Robust Failover Procedures  Communications - Diverse building entry for critical links - Diverse in-building routing of cables  Security - 24x7 Manned or Automated Security - Zero Public Access Key Attributes of the Local Exchange
  4. 4. © 2015 ADTRAN, Inc. All rights reserved. 4 First Steps Outside  The Mini Clean Room - Closed System - Microclimate*  Heat Exchanger to exhaust heat  No Direct airflow though equipment  Matching Equipment - The same Active broadband equipment as in the Exchange - The same passive equipment  Localised Power Solution - Usually Single AC supply - Local Rectifiers - Local Backup Batteries  Relative Security - Locked and Alarmed Doors * Some Choose Forced Air Cooled Open Systems
  5. 5. © 2015 ADTRAN, Inc. All rights reserved. 5 Leaving the Goldilocks Zone – OSP DSLAM  Initially Developed for the Under-Served - Rural – Low Density Broadband - Minimal Deployment & Operational Costs - Single Technician Turn-up - Flexible Deployment Options  Purpose Built for Extremes - Self Contained Microclimate - Broad Operating Temperature range - Hermetically Sealed - Completely Solid State - Zero Routine Maintenance - Ballistics Grade Enclosures  Established Option for VDSL2 Roll-out - Reduced Time to Market - Lower Operational Costs - Reduced Dependencies on Utilities & Fibre Backhaul 1st Gen 1124 (ADSL) 2nd Gen 1148 (ADSL2+) 3rd Gen Solutions (ADSL2+/VDSL2) 4th Gen Solutions (VDSL2 w/ vectoring) G.fast DPUs
  6. 6. © 2015 ADTRAN, Inc. All rights reserved. 6 We’re Not in Kansas Anymore  Temperatures - Operating range -40C to +70C - Substantial Daily Temperature Swings - Solar Loading - Convection Cooling  Power - Dirty Power Sources - Frequent Micro Outages - Exposure to lightening Strikes  Security - Out of Reach Pole Mounting - Out of Sight Chamber Mounting - Passive Cabinet Exterior Mounting
  7. 7. © 2015 ADTRAN, Inc. All rights reserved. 7 What Have We Learned?  View an OSP as a System - The Power, Uplinks, Fixtures, Cables - The Weakest Link can Down the System  A Power glitch can equal a reboot ~10 Minute TV interruption  Factor in System Testing Margin - Exceeding the System Rating Regardless of Component Specifications  Component Suitability - Operating Temperatures Push the Limits of Most - Temperature swings reveal any weaknesses - Broader Recognition of the New Extremes Required from Component Vendors
  8. 8. © 2015 ADTRAN, Inc. All rights reserved. 8 97.70% 99.98% 96.50% 97.00% 97.50% 98.00% 98.50% 99.00% 99.50% 100.00% 100.50% X5R (85C) X7R (125C) Reliabilityin% Ceramic Capacitor Ceramic Capacitor Reliability Improvement • Initial Design Used a X5R (85C) Ceramic Capacitor in VDSL DSLAM • Unit Operating Specification -40C to +70C • Early Customer Returns Data Dictated the need to use X7R (125C) An Example of Tailored Component Selection
  9. 9. © 2015 ADTRAN, Inc. All rights reserved. 9 What Have We Recognised?  Collaboration Between Procurement and R&D - Standardising on the minimum range of components not always possible - Physical Dimensions and Temperature considerations more pronounced in the cramped space inside an OSP  Supply Chain Control - When your Supplier’s Supplier Makes Material or Process Changes  Is Corrosion Resistance Compromised?  Is Operating Temperature Range Reduced?  Is the Thermal Output Increased - Individual Application Testing of Each Alternative Component
  10. 10. © 2015 ADTRAN, Inc. All rights reserved. 10 What Have We Changed Ourselves?  Supply Chain Change Control - Stringent Supplier Change Control Procedures - System Focused Component Selection Criteria - Tight Collaboration Between Procurement and Engineering  Assembly Quality Control - Criteria for Material Selection for Connectors, Adhesives, and Solders - Adopted Stringent Controls over Component Dimensions  Flexibility vs Reliability - Field Service Options Compromise Enclosure Integrity  Failures from Incorrect Closure Outweigh Component Failures  Component Quality Improvements Can Negate Field Replacement Requirements
  11. 11. © 2015 ADTRAN, Inc. All rights reserved. 11 What Have We Shared?  Increased Customer Education on Deployment Risks  “Any Colour you like so long as it’s White”  Painting Green or Brown significantly alters performance under Solar Load conditions.  Mounting locations can Impact Airflow  Enclosed Spaces Impede Heat Exhaust  Covers, Lids, Camouflage & Mounting Direction can all prevent Convection  Cable Routing & Securing  Avoid Sheathing Abrasion  Prevent Water ingress  Reduce Cable Related Failures  Corrosion Awareness  Salt Fog in Coastal Regions Attacks Every Weak Point  Standing Salt Water in Chambers - Common in Snow Prone Regions  Directly Buried Equipment at High Risk From Corrosive Materials  UV Damage Will Quickly Destroy Inferior Materials
  12. 12. © 2015 ADTRAN, Inc. All rights reserved. 12 Key Takeaways  G.fast will Demand OSP Deployment due to Proximity and Economic Constraints  OSPs Bring the Required Expediency and Predictability To Deployment Schedules  Tight Supply Chain Controls Critical to Preventing Unwanted Post Deployment Surprises  When Installed per the Guidelines OSPs Deliver Exceptional Customer Experiences for Decades  We Hope Our Experience Aids Your Journey out of the Clean Room

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