Televes 769501, Руководство пользователя

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GPON ONT
Figure 2-5: Optical fiber Internet service user access
In the upstream direction, the Refs. 769501-769502 is connected to the optical splitter and respectively to the OLT through the PON port to pro-
vide integrated access services through the service headend.
In the downstream direction, the Refs. 769501-769502 is connected to various terminals through the following LAN-side ports to implement
multi-play services:
Four 10/100/1000M Base-T Ethernet ports, which can be connected to terminals such as PCs, STBs, and video phones to provide
the high-speed data and video services;
Two FXS ports, which can be connected to telephone sets to provide VoIP services;
Two Wi-Fi antennas, which can connect to Wi-Fi terminals wirelessly to provide a secure and reliable high-speed wireless network;
Two USB ports, which can be connected to a USB storage device to provide convenient storage and file sharing services within a
home network;
One RF Overlay port, which can be connected to a TV set to provide high-quality CATV service.
The communication between client equipment (ONT) and the ISP access routers (MAN edge) is made by an optical fiber-based passive architec-
ture (ITU-T G.984 Recommendation). The GPON network acts as a Layer 2 Ethernet metropolitan network. Access network assures and controls
the media (MAC) communication through a TDMA scheme, introducing GEM (GPON Encapsulation Method) in between to adapt TDM layer to
Ethernet.
The used protocol stack is shown in Figure 2-6.