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NTU Optical Network Terminals
29
3.3
NTU-RG-1402G-W Architecture
Fig. 18— Logical Architecture of a Device with Factory Settings
Main Components of the Device:
–
optical receiver/transmitter (SFF module)
for conversion of an optical signal into an electric one;
–
processor (PON chip)
which converts Ethernet and GPON interfaces.
–
Wi-Fi module
is intended to organize wireless interface on the device.
A device with factory (initial) settings have the following logical blocks (see Fig.18Fig. 18):
Br1;
Voice (VoIP block);
eth0…3;
FXS0…1;
wl0;
IPInterface.
In this case, the
br1
block is used to combine LAN ports in one group.
The
eth0..3
blocks physically represent Ethernet ports with RJ-45 connector for connection of PC, STB, or
other network devices. They are logically included into the
br1
block.
FXS0..1
blocks are ports with RJ-11 connectors for connection of analogue phones. They are logically
included into the Voice block. The
Voice
block can be controlled through web interface or remotely with ACS
server through TR-069 protocol. The block specifies VoIP service parameters (SIP server address, phone
numbers, VAS, etc.)
The
wl0
block is an interface for Wi-Fi module connection.
The
Filter
and
Marking
blocks are designed to include local interfaces in one group (
br1
). These blocks are
responsible for traffic rules:
Filter
is used for incoming traffic, while
Marking
—for the outgoing one.