Televes 769503 Manuale utente

GPON ONT STANDARD

EN User´s Manual

w w w . t e l e v e s . c o m

Ref. 769503

ENGLISH

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 Specications..................................................................................................................................................................... 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. Conguration ..................................................................................................................................................................................... 37

5.1 ONT activation ................................................................................................................................................................................... 37

5.2 Customization.................................................................................................................................................................................... 37

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

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 signicant 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 ecient option for passive optical

network topologies.

Together with multi-vendor OLT interoperabily (BBF.247 certied), other dierenciated 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 reective 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 Oce, in this GPON point-to-multipoint

architecture there is one single laser and photo-detector in the Central Oce (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 signicant cost reduction in this

kinf of networks rollout.

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 reered 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

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 certied by BBF.247 ONU certication program.

BBF.247 ONU certication program certies ONT link layer conguration and management protocol, OMCI, Figure 2-2, as dened 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 Conguration and Management

IP-based services conguration and management is achieved by means of the TR-069 protocol as dened 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 conguration

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 oce 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

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.

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

identier and an 802.1p priority level.

The ONT classies the trac 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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