ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación descargar pdf (Pagina 281)

To enable active PLC devices from Oxance to behave as a repeater (or bridge),

an option must be activated by connecting to the PLT320 via the interface available

on the PLT300 and by entering the MAC address of the PLT320 in the Source menu

of the Oxance menu bar. A drop-down list displays the identified devices. These

identifiers start with PLT and end with hexadecimal characters corresponding to the

end of the MAC address (MAC address equal to 0c000b0507e8 for the device iden-

tified by PLT_0507e8).

Therefore, it is important to correctly read the MAC address on the case of the

device to be configured and to spot it in the Source pull-down menu for connecting

to it and modifying its configuration parameters. In this case, we spot the PLT320

device.

VoIP Under PLC

Since the PLC networks can be viewed as Ethernet networks in the electrical net-

work, IP phones can be connected to it within the company. These phones are con-

figured so that they can connect to a PABX (private automatic branch exchange) of

the IP type. This PABX recovers the SIP (session initiation protocol) flows from the

phones and is used as a gateway to the STN (i.e., the usual analog telephony net-

work).

The royalty-free Asterisk tool developed by Michael Spencer, available at the

following address: http://www.asterisk.org, can be installed on the corporate net-

work in order to manage the IP phone fleet on PLC. The Digium company launched

after the Asterisk project originated offers a range of services and products based on

Asterisk implementations.

The advantage of this solution is that it makes it possible to move the IP phones

on the entire electrical network. Figure 11.11 gives an architecture example.

262 PLC for Businesses

Figure 11.10 Logical representation of PLC repetition on two segments

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ZyXEL Communications PLA-470 V2 - V3.0.5 Guía de instalación Pagina 281