Radio Frequency Video Signal Distribution; Video Overlay System - Alcatel-Lucent 7302 Information Manual

The V-OLT supports the full cable television (CATV) spectrum from 47 MHz to 862
MHz.
Access to video services may require a Set-Top Box (STB) between the video output
of the ONU equipment and other Customer Premises Equipment (CPE).
The V-OLT requires a separate Element Management System (EMS) to control
video output signals from the V-OLT equipment.
The RF video service in the downstream 1550 nm optical band supports most
available cable television (CATV) services, including standard analog broadcast
channels, as well as standard and high definition digital broadcast channels. For
access to these services, a set-top box may be required between the video output of
the ONT equipment and the customer's television set.
Within the ONT functional blocks, the RF subsystem is an RF amplifier that
produces the required RF output for the subscriber video equipment. The RF
subsystem monitors the levels of optical and RF signals in support of the
performance management functions. The RF video service is optional and
independent of the SoC functions. Figure
Video head end
Broadcast
video
Analog
channels
Digital
channels
Video RF mux
Private
network
VoD
VoD
server
Ethernet
Router
A
Analog broadcast No STB needed
B
Digital broadcast STB needed
C Broadcast and VoD STB needed

Radio Frequency Video Signal Distribution

The V-OLT uses Erbium Doped Fiber Amplifiers (EDFA). The distribution requires
a Wavelength Division Multiplexer (WDM) to be overlaid into the fiber path.
Alcatel-Lucent 7302 ISAM | 7330 ISAM FTTN | 7360 ISAM FX ONT R04.06.02
3FE 55873 AAAA TCZZA Edition 01
ONT Product Information Guide
3 — ONT and MDU general and interface technical specifications
Figure 3-3 Video overlay system
Core transport Central office
1550 nm
(downstream RF video)
Video optical
EDFA
transmitter
OLT
IP
Network
1490 nm
(downstream data)
3-3 shows the video overlay system.
Fiber (PON) ONT
Distribution
1310 nm
(upstream)
Power Major Alarm
Processor Minor Alarm
WDM
November 2013
Home network
A
Coax
B
Coax
C
Ethernet
Coax
3-15