NH High Speed Data Initiative Mike Bewersdorf TDS – OSP Engineering February 2009
Objective and Site Selection • Objective: •Provide a 25 Meg (downstream) by 1.5 Meg (upstream) data connection across multiple technologies. • Deployment Strategies Analyzed for Each Serving Area: • Fiber to the Home (FTTH) using Gigabit Passive Optical Network (GPON) • Fiber to the Node (FTTN) using ADSL2+ & VDSL2 • Criteria for Selecting Areas to Serve • Level of competition • Density of households • Cost of build •Primary contributing factors driving cost of build… •Do we own the interconnection into the exchange? •Type of outside plant construction in the target area - aerial vs. buried February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 1
Planning Process • Planning – April through May •Reviewed 12 exchanges •Serving 20K+ service addresses (SA) •Estimated both FTTN and FTTH solutions for all customers •Without fail, existing fiber fed buildings, without any extenuating circumstances; ie. power, space, etc., always proved out as FTTN •Solution was selected based on cost per service address passed per serving area •If FTTH could be constructed for less than double FTTN, we selected FTTH •Once costs were estimated, a priority was put to each serving area based on number of homes served and average cost, until we reached the identified budget February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 2
Planning Process – Household Density Map February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 3
Engineering Process • Engineering – May through September •Engineered solutions in 10 exchanges •25 fiber distribution hub (FDH) locations •Passing 4800 SA’s •154 strand miles of fiber •35,000 fiber splices •19 FTTN locations •Passing 4100 SA’s Engineering ultimately exceeded planning estimates and budget availability, forcing sites to be eliminated for this phase. February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 4
Engineering Process – Sample Staking Sheet February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 5
Engineering Process – Sample Fiber Splicing Block Diagram February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 6
Deployment Process • Deployment – August through December •Constructed solutions in 10 exchanges •21 fiber distribution hub (FDH) locations •Passing 3560 SA’s •126 strand miles of fiber •29,000 fiber splices •15 FTTN locations •Passing 2952 SA’s • Total SA’s Passed: 6512 • Avg. Cost / SA Passed: $954 February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 7
Sample Hybrid FTTN / FTTH Network February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 8
Sample FTTN Network Our Networks February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 9
Sample FTTH Network February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 10
Lessons Learned (LL): Material Acquisition • Runs on material are inevitable, even in bad economic times, so plan accordingly. • When we were working through the planning phases of these projects fiber lead times were at 3-4 week intervals. When materials were ordered in the middle of June they were at 6 weeks and when the final materials were ordered delivery was at 10-12 weeks. • Splicing materials were ordered for an approximate savings of 12% over bid pricing: • Points of interest: • When providing materials for ribbon fiber splicing, need to order separate ribbon fiber splice trays and blocking kits • Doubling up MST tails on each port in the D5 closure seems to improve the seal but requires more branch off clips then was original planned for February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 11
LL: Planning and Engineering the Fiber Distribution Hub (FDH) • When possible, deploy the FDH in right of way… • Attaching to existing poles or working with municipalities to place facilities in public right of way, will: • Help to manage time in the deployment by expediting site acquisition and engineering timelines • Save on overheads • Leaving sufficient slack in cabinets placed in right of way will allow the FDH to be moved in the event of such a requirement. • Disadvantage is that we have no location to place electronics if an active fiber solution was required in the future. • FDH with stub • The stub allows splicing to be done in an environmentally controlled location and eliminates prep for more efficient turn around. • 864 FDH – 2 Men – 4.5 to 5 days • The part number for an 864 FDH that we selected in the OSP Ordering Guide is for the largest stub possible. It will be provided as 4 216 stubs for distribution and 1 72 stub for feed. • Ordering the proper size stubs will reduce the required additional splicing and tie cables between closures as depicted on the next slide. • More attention to ordering is necessary to facilitate matching of stub and field cables. • Recommend the standard stub size be reduced to 144. • Leaving 80’ of slack in tie cables between closures will allow for a single closure to be pulled out for future splicing or maintenance. February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 12
LL: Planning and Engineering the FDH …continued February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 13
LL: Planning and Engineering FDH …continued • FDH with splice wheels • Eliminate some of the issues discussed with the FDH with stub and reduced splicing and closure costs to some extent. • They require significant prep which translates to time on an aggressive schedule • 288 FDH – 2 Men – 3.5 to 4 days – 1.5 to 2 days of that are prep. • 432 FDH – 2 Men – 4.5 to 5 days – 2.5 to 3 days of that are prep – same amount of time as an 864 w/ stubs • Now that the full scope of the prep required is known, splicing pricing might be impacted to reflect the amount of time in the next phase of the build out. • In northern climates, there are no tails to be brought to a splicing van or trailer. Splicing was completed in a tent, the lack of environmentally controlled conditions further impacted productivity. February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 14
LL: Planning and Engineering – SCA vs. MST • SCA • Provides a more finished look and feel • Instills a confidence level in the installation personnel because of its similarity to a terminal. • Inventory is easier to manage as their are only two options a 9” closure w/ 4 or 8 ports • They are more expensive • Harder to engineer for, as they require hand coils be left and accounted for in initial engineering of fiber • Prep and splicing of these closures is extremely prohibitive and consistent production is two per man per day • A better understanding of the amount of time necessary will drive future cost in closure placement and splicing as subcontractors who work by the piece have left these jobs February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 15
LL: Planning and Engineering – SCA vs. MST …continued • MST • Is an effective but crude manner to construct outside plant • It is a cost effective and time saving alternative to the SCA • It limits the number of splice points. ◦ We were already using our own homemade MST’s, at a much greater cost, to limit our access points in our larger fibers, 144 and greater, in TN. • While construction takes a little longer, splicing is much faster. Instead of 2 SCA locations per man per day from a bucket, a splicer can drop the tails and cable, bring them into a van or trailer and turn up 7 or 8 MST’s in a day. • The MST did pose logistical problems in storage and inventory management for both TDS and our contractors. • The MST w/ a 2000’ tail provided difficult to pull into duct and runs of this length should be avoided in buried plant applications. • There is some concern about the proper amount of inventory to repair cable damage. ◦ Have recommend 4 Port MST’s w/ 2000’ tails and 8 Port MST’s w/2000’ tails to be left at a centralized location in our area for maintenance purposes February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 16
Keys to Success • Partner with a trusted engineering and construction contractor! • Bring the team together regularly to discuss progress! • Get in the field during construction to make sure your getting what you want! February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 17
February 2009 TANE/NYSTA – TDS High Speed Data Initiative - 18
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