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16 NTU-2V, NTU-RG Optical Network Terminals
3 NTU-RG-1402G-W ARCHITECTURE
Fig. 6 – Architecture of a Device with Factory Settings
Main Components of the Device
– optical receiver/transmitter (SFF module) for conversion of an optical signal into electric one;
– processor (PON chip) which converts Ethernet and GPON interfaces;
– Wi-Fi module for wireless interface of the device.
A device with factory (initial) settings have the following logical blocks (see Fig. 6):
br0;
Voice (IP telephony);
eth0…3;
FXS0…1;
wl0.
br0 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, and
other network devices. They are logically included into the br0 block.
The FXS0..1 blocks are ports with RJ-11 connectors for connection of analog 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.
A connection to optical device (successful connection to an OLT) additionally create the gpondef,
gpon1232..1236, gpon1232.2..1236.6, bronu0, bronu255, veip0, and bronu255.19 (ACS) blocks with the help
of the OMCI protocol (ONT Management and Control Interface). Blocks enumeration is configured in OLT.
The ACS block is used for device remote control with the help of the ACS server (Auto Configuration
Server). The block is used for communication with subscriber's equipment and processing of queries from NTP
devices and enables services.
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