Alcatel-Lucent 7330 Product Information Manual page 153

Timestamps within the MEF-8 packets are used for carrying timing information
across the network. Timestamp values are generated in differential format when the
interface is operating in differential timing reference mode. Otherwise, the
timestamp values represent absolute time.
3.7 RF video interface specifications for video overlay
The following section provides design guidelines for coaxial connectivity,
configuration recommendations, and information based on the RF video receiver
types used by Alcatel-Lucent ONTs and MDUs.
Video overlay overview
The system can provide RF video service through the video overlay function. The
function operates downstream in the 1550 nm optical band. Signals sent over the
overlay network are presented to the subscriber as RF signals from a video F-type
connector in the ONT.
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.
Alcatel-Lucent 7330/7302 ISAM FTTN R04.02.42a
3FE 54199 AAAA TCZZA
3 — ONT and MDU general and interface technical specifications
Warning —
Operating equipment outside of its tested and
documented performance characteristics and causing an optical
overload may cause damage to equipment components, such as APD
receivers. This can affect service delivery, and void any component or
system warranties.
Note 1 —
V-OLT is an optional network equipment that is used to
distribute Radio Frequency (RF) video signal from service providers
to the ONTs. This equipment is not part of the OLT or ONT system.
The following description of the V-OLT function is provided for
informational purposes.
Note 2 —
Alcatel-Lucent only guarantees ONT RF video output
levels. Coaxial cable and splitter information in the following sections
are provided as guidelines. See the coaxial and splitter vendor
documentation for more information.
Caution —
Video subscribers can only be provisioned on the
7342 ISAM FTTU system platform.
Edition 01 ONT Product Information Guide
March 2011 3-13