Televes 769503 Manual de usuario
GPON ONT STANDARD
EN User´s Manual
w w w . t e l e v e s . c o m
Ref. 769503
ENGLISH
EN
Index
1. Summary.............................................................................................................................................................................................. 11
2. Technical Description...................................................................................................................................................................... 12
2.1 ONT Main Functionalities............................................................................................................................................................... 12
2.1.1 Application Scenario ....................................................................................................................................................................... 12
2.1.2 Interoperability.................................................................................................................................................................................. 13
2.1.3 Services................................................................................................................................................................................................. 14
2.1.4 Policing / Rate Limiting................................................................................................................................................................... 19
2.1.5 Interfaces ............................................................................................................................................................................................. 21
3. General Specications..................................................................................................................................................................... 23
3.1 PON Optical Interfaces.................................................................................................................................................................... 23
3.2 Optical Metering ............................................................................................................................................................................... 24
3.3 Wavelenght Filtering ....................................................................................................................................................................... 24
3.4 GPON/Ethernet characteristics.................................................................................................................................................... 25
3.5 GPON management......................................................................................................................................................................... 25
3.6 RF TV Channel slicing characteristics......................................................................................................................................... 26
3.7 General Features ............................................................................................................................................................................... 26
3.8 Standards............................................................................................................................................................................................. 27
4. Setup ..................................................................................................................................................................................................... 28
4.1 Before installing your ONT device .............................................................................................................................................. 28
4.2 How to Setup your ONT.................................................................................................................................................................. 28
4.3 Interface connection ....................................................................................................................................................................... 30
4.3.1 ONT 769503-SFU............................................................................................................................................................................... 30
4.3.2 ONT 769503-4GE-2FXS ................................................................................................................................................................... 33
4.3.3 ONT 769503-MBH ............................................................................................................................................................................. 35
5. Conguration ..................................................................................................................................................................................... 37
5.1 ONT activation ................................................................................................................................................................................... 37
5.2 Customization.................................................................................................................................................................................... 37
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GPON ONT STANDAR
5.2.1 Software download from the OLT............................................................................................................................................... 37
6. Operation indicators........................................................................................................................................................................ 39
6.1 ONT 769503-SFU............................................................................................................................................................................... 39
6.1.1 Status..................................................................................................................................................................................................... 39
6.1.2 Final checks......................................................................................................................................................................................... 40
6.1.3 Troubleshooting................................................................................................................................................................................ 41
6.2 ONT 769503-4GE-2FXS ................................................................................................................................................................... 42
6.2.1 Status..................................................................................................................................................................................................... 42
6.2.2 Final checks......................................................................................................................................................................................... 43
6.2.3 Troubleshooting................................................................................................................................................................................ 43
6.3 ONT 769503-MBH ............................................................................................................................................................................. 44
6.3.1 Status..................................................................................................................................................................................................... 44
6.3.2 Final Checks ........................................................................................................................................................................................ 45
6.3.3 Troubleshooting................................................................................................................................................................................ 45
7. Glossary of Terms and Abbreviations........................................................................................................................................ 45
EN
5
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GPON ONT STANDAR
1.Summary
The ONT is an Optical Terminal Equipment unit for Passive Optical Networks (PON) termination in a (Fiber-To-The-Home) FTTH / (Fiber-To-The-Cell)
FTTC service delivery architecture. ONT communicates with the OLT (Optical Line Terminal) for the PON side and with the customer’s premises for
the client side. This equipment supports triple-play services - high speed internet (HSI), voice (VoIP) and video (IPTV and/or RF Overlay) as like as
implementing the mobile backhaul service in the access component in the FTTC architecture. The use of the GPON ber access technology stan-
dard architecture does allow a signicant service delivery increase when compared with traditional xDSL technology.
The ONT equipment technology is based on GEM (GPON Encapsulation Method), and complies with ITU-T G.984.x. recommendation as like as
G.984.4 (OMCI) ensuring interoperability with major GPON OLT vendors.
These base functionalities, together with the support for bit rates of up to 2.5 Gbps (downstream) and 1.24 Gbps (upstream), a splitting ratio of up
to 1:64 in a single ber and a distance range of up to 60 km, make the GPON technology and the ONT the most ecient option for passive optical
network topologies.
Together with multi-vendor OLT interoperabily (BBF.247 certied), other dierenciated features of the ONT product family are the embeeded RF
Video Overlay as well as the chance to have several TV channel packs by means of using remote managed analog RF video overlay lters. The use
of an embeeded optical reective component also increases probing resolution in case of FTTH probing.
As opposed to the point-to-point architecture, in which there is one physical port per client in the Central Oce, in this GPON point-to-multipoint
architecture there is one single laser and photo-detector in the Central Oce (CO) to serve up to 64 CPEs. All the Optical Distribution Network is
built by means of passive equipment modules with a long MTBF value and very low OPEX costs. This leads to a signicant cost reduction in this
kinf of networks rollout.
EN
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2.Technical Description
2.1 ONT Main Functionalities
The ONT is aimed for customer premises and complies with the ITU-T G.984.x recommendation in order to transport (over GPON) and deliver (to
premises domain) the full pack of broadband services.
Broadband service applications are commonly referred as below:
High speed internet (HSI);
Voice (VoIP) services (SIP/MEGACO H.248);
TV (whether IPTV or analog RF video overlay);
Mobile Backhaul.
The multiplay environment is thus reinforced when combining the upper reered services.
2.1.1 Application Scenario
The Figure 2-1 shows possible bridging scenarios for ONT equipment when in an end-to-end PON architecture.
Figure 2-1: ONT applications scenario
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GPON ONT STANDAR
2.1.2 Interoperability
The ONT bridging family equipment complies with ITU-T G.984.x. recommendation as like as G.984.4 (OMCI) ensuring multi-vendor OLT interop-
erabily with major GPON OLT vendors.
The ONT bridging family equipment is certied by BBF.247 ONU certication program.
BBF.247 ONU certication program certies ONT link layer conguration and management protocol, OMCI, Figure 2-2, as dened by ITU-T G.984.3,
ITU-T G.984.4 and ITU-T G.988.
OSS
EMS
OLT
ONT
RGW STB
OMCI
Network Topology
OLT/ONT
Management
(TL1, SNMP)
Figure 2-2: Link Layer Conguration and Management
IP-based services conguration and management is achieved by means of the TR-069 protocol as dened by Broadband Forum. This procedure
takes for granted that previously the link layer connectivity has been achieved.TR-069 is then transparent to the OLT, since the TR-069 connections
are established between the ACS and the ONTs,Figure 2-3.
OSS
EMS
OLT
ONT
RGW STB
ACS
TR069
OMCI
Network TopologySubscriber Service
OLT/ONT
Management
(TL1, SNMP)
Figure 2-3: IP Based services-TR069 conguration
EN
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2.1.3 Services
The ONT supports the following services:
Voice over IP (VoIP) service;
Broadband Internet Access:
High bit rate data for High Speed Internet service – HSI;
IPTV service;
Analog video service (RF Overlay);
Mobile Backhaul service.
2.1.3.1 Internet over GPON
GPON is a point-to-multipoint passive optical network, in which unpowered optical splitters are used to enable a single optical ber to serve
multiple premises, typically 1-64.
A PON consists of an optical line terminal (OLT) at the central oce and a number of optical network terminals (ONT) at the customer premises.
Downstream signals are broadcasted to all premises sharing multiple bers. Encryption can prevent eavesdropping. Upstream signals are com-
bined using a multiple access protocol (Time Division Multiple Access - TDMA). The OLT queues data to the various ONT terminas in order to pro-
vide time slot assignments for upstream communication.
In Figure 2-4 it is shown a scenario for Internet service user access through an ISP network.
Figure 2-4: Optical ber Internet service user access
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GPON ONT STANDAR
The communication between client equipment (ONT) and the ISP access routers (MAN edge) is made by an optical ber-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 2-5.
IP
ETHERNET
GEM
TDM/TDMA
Figure 2-5: Stack of protocols for GPON architecture
Several transmission containers (T-CONT) are assigned to each user. Each T-CONT has an associated GEM port and each GEM port has a VLAN
identier and an 802.1p priority level.
The ONT classies the trac depending on the VLAN and the marked priority, and routes it over the corresponding T-CONT/GEM port. Thus for
frame multiplexing, GEM and T-CONT ports are used for uplink while the downlink only use the GEM ports feature.
The CPE architecture is shown in Figure 2-6.
Figure 2-6: CPE architecture
Internet access is provided through the Home Gateway (HG) to obtain a public Internet IP.
The home gateway allocates a private IP address to each client through DHCP, making the addresses conversion through NAT for Internet output.
The home gateway establishes PPPoE session with the ISP network, which authenticates the user for Internet access. The user must be a service
subscriber and the service must be provisioned at the OLT where the ONT is connected to.
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