ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 300)

tecture that we have seen in Chapters 10 and 11 dedicated to home and corporate

PLC networks.

The topology of the low voltage HTA electrical network of the community from

the MV/LV transformer to the various building meters is a star topology. In addi-

tion, the distribution network requires an isolation between customers of the PLC

network in order to prevent any interception of the data communications circulat-

ing between a PLC network customer and the Internet.

This implies a PLC architecture of the master-slave type in which the network

master:

•

Monitors, administers, and supervises the various network devices;

•

Ensures the security and the confidentiality of the connections to the Internet

and between each customer of the PLC network;

•

Ensures the gateway functionality to other IP networks, and, more especially

to the IP transit point available in the community (satellite, IP point of pres-

ence, optical fiber, BLR, WiMax, Mesh, and so forth).

Figure 12.10 illustrates an example of PLC architecture in a community from

the MV/LV transformer to the various branches of the star network supplying the

community buildings with electricity.

The key points of this architecture are the following:

Implementation of a Communitywide PLC Network 281

University

residence hall

Figure 12.10 PLC architecture example for a community

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ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación Pagina 300