2011

FTTH Deployment Techniques In Existing Infrastructure

Background To Emtelle

• One of the Leading suppliers of Blown Fibre passive network infrastructure solutions with its Fibreflow microducting system

• UK - uPVC Primary Duct (1981)

• Europe - HDPE Duct / Sub Duct (1994)

• Rope in Duct / Cable in Duct (1998)

• Blown Fibre Tube Bundles (1993)

• Installation Equipment / Training (1997)

• Fibre Mini Bundles and Mini Cables (2005 onwards)

Emtelle: innovation is our tradition

MDU – Do It Right First Time

Development of Duct Solutions

Trends / Drivers:

– Evolution of Cable design (getting smaller)

– Future Proofing

– Development of deployment techniques

– Use of existing Ducted Infrastructure

– Use of Existing Overhead Infrastructure

1980s

1 fibre per tube10mm OD - pulled

1990s

8 fibres per tube18mm OD - pulled

2000

12 fibres per tube13mm ODBlow / Pulled

2008

12 fibres per tube7mm ODBlowable

96 fibre

Cable Evolution

2011

24 fibres per tube7.9mm ODBlowable

144 fibre

96 fibre

96 fibre

8 fibre

Deployment Methods In Existing

Infrastructure

Under ground Ducts and Subducts

Sewers & Waterways

Overhead

Current Sub-ducting Trend into Existing Ducts

110mm duct with 4 x 35/30 subducts into a 100mm duct

or 40/50mm Direct Buried Subducts

110mm duct with 7 x 14/10 tubesBenefit to Telco’s :-

• Cheaper ducts

•Takes up less room

•Faster cable installation

Benefit to Operator & Constructor :-

• Smaller products, so easier and

faster to install

•Less machinery required

• Tubes take up less room, so more

opportunities for ‘Over Ducting’

• Smaller tubes are more forgiving

when installing around bends etc,

New Sub-ducting Trend (Day 1)

110mm duct with 24 x 14/10 tube66% Duct Fill

New Sub-ducting Trend (Part Filled)

4x 14/10mm primary tube

installed into 63mm Sub

duct

Duct Install

All primary tubes can be pulled in

at the same time, using 4 small

pull socks attached to a larger

main pull sock

Sewers, Culverts & Tunnels - Pro’s

• Most commonly used in Cities as an

alternative to Trenching or poles

• Quick cable installation

• Reduced damage risk

• Long installation lengths achievable

Sewers, Culverts & Tunnels - Con’s

• Politics

• Cables to be rodent resistant

• Trenches required to link to existing

networks and new customers

• Co-operation required from other

utilities

Water, Waste and Tunnel Systems

Aerial Installation Overhead – Rural and Urban

• Use of Existing Poles from other Operators

• A charge may be made each time a cable is installed

on a pole.

• With Emtelle Blown Fibre, Only 1 Cable is installed on

a pole.

Over Head Solutions

Large 14mm tube for 96 or 144

fibre cable24 x 4mm tubes for drops to homes

and central 8mm tube for 12 fibres

(For PON)

12 x 4mm tubes and a central

14mm tube for main fibre cable

runs

Alternative Lower Cost Deployment Techniques

New Build

Microtrenching

(150mm width)

Microtrenching

(20mm width)Mole Ploughing

Slot Cutting

Different size

machines can

provide various cut

sizes

DBfmf (direct buried filled metal free)

from 3DBfmf up to 7DBfmf 12/10mm

Stages of Cleanfast process

Refilling with a

specific mortarDuct-laying

TrenchingGPR Detection

Final reinstatement

Slot Cutting

• Niche application in certain areas

– Very cost effective

– Low environmental impact compared with

open cut methods

– Shallow depth limitation of 220-250mm

– Fibre provision is enough for small

business applications

– Can be incorporated into existing

underground Infrastructure

– Risk of future damage due to shallow

burial depth

Slot Cutting

Blown Fibre Supply Options

Direct Bury Or

SubDuctingDirect Install Products

Sub-Divisioning of Existing

Ducted NetworksNew Build

Mole Plough / Trenching

New or Existing Build

• 4 fibre - upto 1500m max in typical route

• 500m in this route (up and down 4 times)

(average installation speed was 49m/min)

• 8 & 12 fibre 800 – 1000m

• 72 fibre cable in 10/8 tube, 1000-1500m

• 72 fibre cable in 12/9.4mm tube 2.2km

• 96 fibre cable in 12/9.4mm tube 1000m

The above distances are point to point blows.

Fibre can be centre blown and onward blown

to get 6km splice-less fibre lengths.

How Far can you blow fibre in One point to point blow ?

Thanks for your time

QUESTIONS