Matteo PandolfiField Applications Engineer

Connectivity & FTTx Business

MDU Cabling in ItalyAn overview

The extractable Solutions in MDU cabling

Nowadays the extractable solutions have become veryimportant in MDU cabling systems, because they bringmany advantages to the installation:

Speed and ease of the installation

Less cables to deal with

Reduced space required

High Flexibility

Future upgrade

The harsh environments A new compact Solution ConclusionsThe extractable solution

The extractable Solutions in MDU cabling

The harsh environments A new compact Solution ConclusionsThe extractable solution

The principle of extractable solutions is so easy:

Step 2On the subscriber’s floor pull

back the selected fibre module

Step 1On a higher floor cut the

selected fibre module

Optical NetworkTermination

2nd window : “extraction window”

1st window: “pick window”

Extr

actio

n Le

ngth

250 µm Optical Fiber (ITU-T G.657.A1)

900 µm LSOH coating

LSOH outer sheath materialGood thikness to accomodate the strength members

Standard Micromodule

GRP Rodsgive tensile strength to the cable

The harsh environments

Installers and Tel.Co.s find it very effective, and more and morechoose to go this way…

…pushing it to the limit when they find:A very limited space available in the Riser ShaftsA difficult path between two floorsOvercrowded Riser DuctsA lot of bends to deal withHistorical Buildings without any cable ductsVisual impact as an issue

And this is the situation you face very often in the old-countries ofEurope, not only in Italy, where for the first time a new solution isrequired.

The harsh environments A new compact Solution ConclusionsThe extractable solution

The harsh environments

A new compact Solution ConclusionsThe harsh environmentsThe extractable solution

A new compact Solution

In all those cases, moving away from the standardsolution, a new compact solution is available:

Compact Riser Cable design

Embedded Riser Cable

A new compact Solution ConclusionsThe harsh environmentsThe extractable solution

250 µm Optical Fibre(ITU-T G.657.A1)

Yarn reinforced peripheral

900 µm LSOH coating

LSOH outer sheath materialJust a thin skin to hold the fibre modules

Enhanced Micromodule

A new compact Solution

Compact connectivity

Embedded Breakout Unit

Embedded Fusion In-Line Splice protection

Secondary Manifold

ConclusionsThe extractable solution A new compact SolutionThe harsh environments

A new compact Solution

New specific Installation Tools

Embedded Stripping Tool

Embedded Crimp Set

ConclusionsThe extractable solution A new compact SolutionThe harsh environments

A new compact SolutionThis allows you to cope with the most difficult

environments:

ConclusionsThe extractable solution A new compact SolutionThe harsh environments

A new compact Solution

ConclusionsThe extractable solution A new compact SolutionThe harsh environments

Pros:Larger number of fibresMore room insideNo worries during installationGood stiffness, can be pushedGood extraction lengthAvoids twisting of micromodulesOptical fibres not stressedCan stand a little crushingDoesn’t contain aramidCost effective...

Cons:Larger diameterCan’t deal with extreme bendingMore space needed for window cuts

Conclusions

ConclusionsThe extractable solution A new compact SolutionThe hard environments

Pros:Smaller diameterBetter flexibility for extreme bendingLess space needed for window cuts

Cons:Less fibres insideLess room insideBe careful during installationToo weak to be pushedShort extraction lengthModules can be highly twistedOptical fibres can be very stressedDoesn’t stand any crushingContains aramidMore expensive...

For the time being, extractable solutions represent themost effective way to create the fibre network in theMDU. Systems are new babies, which can have a lot offurure improvements.

For internal cabling, when enough space is available forthe installation, the standard solution has to be chosendue to its advantages in terms of speed, ease ofinstallation, protection to the fibres.

In case of very challenging environments, a compactand embedded solution is available, providing that yourenounce some of the standard solution advantages.

Conclusions

ConclusionsThe extractable solution A new compact SolutionThe hard environments

Thank you all for your kind attention!

Matteo PandolfiPrysmian Cavi e Sistemi Telecom

Connectivity and FTTx - Field Applications EngineerLightspeed is our limit

T : +39 02 6449.50854M : +39 335 1602554F : +39 02 66132.458@ : carlomatteo.pandolfi@prysmian.com

A compact Solution ConclusionsThe hard environmentsThe extractable solution