ZyXEL Communications PLA-470 V2 - V3.0.5 Przewodnik Instalacji Pobierz pdf (Strona 242)

The following Niroda devices of the RJ-11 PLC network can be placed as indi-

cated in Figure 10.6:

•

InternetBox connected to the electrical network to outlet 1 via its RJ-11 tele-

phone plug;

•

Telephone 1 connected to outlet 6 by means of a Niroda device to the tele-

phone PLC network;

•

Telephone 2 connected to outlet 5 in the same manner.

Since the throughputs required for telephony are on the order of 20 Kbit/s, it is

quite realistic to envisage this on the electrical installation of a medium-sized house

(three or four rooms).

Figure 10.7 illustrates the following signals or flows circulating over the electri-

cal and telephone networks of the domestic installation:

•

Analog telephone signal between the telephone sets and the InternetBox RJ11

connectors;

•

IP data flow originating from the ADSL Internet connection.

Configuring Security Parameters

Even within the household, the protection of a PLC network represents a major

step. The use of electrical wiring implies that the network beams a more or less wide

Configuring Security Parameters 223

Table 10.2 Displayed and Useful

HomePlug Turbo PLC Throughputs

DISPLAYED

THROUGHPUT

(Mbit/s)

USEFUL

THROUGHPUT

(Mbit/s)

85 12.5

75 11.8

55 9.42

45 8.79

35 8.23

25 7

14 4.5

12.83 3.5

11 3.2

10.16 2.9

8.36 2.4

6.35 2

4.04 1.22

3 0.89

1 0.33

0.9 (ROBO mode) 0.2

1 2 ... 237 238 239 240 241 242 243 244 245 246 247 ... 348 349

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ZyXEL Communications PLA-470 V2 - V3.0.5 Przewodnik Instalacji Strona 242

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