Alcatel-Lucent 7330 - Radio Frequency Video Signal Distribution; Video Overlay System

3 — ONT and MDU general and interface technical specifications
Alcatel-Lucent 7302 ISAM | 7330 ISAM FTTN | 7360 ISAM FX ONT R04.06.02 November 2013 3-15
3FE 55873 AAAA TCZZA Edition 01
ONT Product Information Guide
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 3-3 shows the video overlay system.
Figure 3-3 Video overlay system
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.
Coax
Ethernet
Coax
Coax
OLT
VoD
server
WDM
Router
IP
Network
Broadcast
video
Analog
channels
Digital
channels
VoD
Ethernet
Private
network
Video optical
transmitter
EDFA
Power
Processor
Major Alarm
Minor Alarm
Video head end Core transport Central office
Fiber (PON)
Distribution
ONT Home network
1550 nm
(downstream RF video)
1310 nm
(upstream)
1490 nm
(downstream data)
Video RF mux
Analog broadcast No STB needed
A
A
Digital broadcast STB needed
B
Broadcast and VoD STB needed
C
B
C