Ericsson ECN330 Manuel d'utilisateur télécharger pdf (Page 42)

Figure 22, Planning the fiber routes

As the Figure 22 shows, new pipeline is installed to extend the reach of the

access network. Because the area is in downtown Helsinki, a bundle of eight

pipes is installed. This gives enough capacity for the cables now and for fu-

ture needs. The construction is from crossroad A6 to B6, from C2 to D2 and

from B2 to B3 to C3 and to C4. The pipeline in crossroad A3 and B3 has

been constructed in a communal project with another service provider. Two

new wells are placed at the crossroads of B2, B3, C3, C2 and A6.

The amount of cable needed is a mater of opinion. If the real estates are

connected using one fiber pair, a total of 130 fibers are needed. Connecting

the real estates with two fiber pairs, one for the broadband connection and

one for spare, 260 fibers would be needed. Four 96 fiber cables are used to

connect the real estates to the service providers network. Two fiber pairs will

be brought into the real estates HMDF. The cable routes can be seen in Ap-

pendix 1 to 4.

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Ericsson ECN330 Manuel d'utilisateur Page 42