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BROADBAND TECHNOLOGIES & SERVICES

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Broadband Technologies -Core Network

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BROADBAND

Broadband Signifies :

High Bandwidth• High Access speeds, 256 Kbps t o 100 Mbps• Huge Core bandwidth pipes, STM –16 (SDH), GigE (MEN) and 2.5 GigE (DWDM / CWDM) Multiple Converged Services • High Speed Data• Voice• Video

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BROADBAND SERVICES

Services Offered On Broadband :

• Data Services • High Speed Internet Services • Point to Point and Point to Multi Point VPN Services• Web Hosting Applications• Walled garden (Internet on TV)

•Voices Services• Audio Conference• Voice over IP (VoIP)

•Video Services• Video Broadcast• Video on Demand• Video telephony• Online Gaming

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BROADBAND SERVICES

Basic Telecom Service Voice

Internet

Value-added Applications

Time

Web Hosting

Multimedia Conference

Video/Audio-On-Demand

OnlineGamingVideo on PC

Revenue

Value Add applications to boost revenues

Services Offered on Broadband

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BROADBAND COMPONENTS

video communication

gaming video

IP VPNBusiness

Residential

Voice over IP

CoreNetwork

Access&

AggregationNetwork

NMS Server

Radius ServerNMS Client

Video Server

User BackendCoreAccess

Soft Switch

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BROADBAND NETWORK ELEMENTS

The Access

The Core

• Wired Access ( DSL, Cable, FTTH)

• Wireless ( BWA, Wifi )

• The Media

•Optical Fiber

• The Technology

• SDH

• CWDM / DWDM

• ATM

• Ethernet

Backend• Authentication Server

• Content Servers

• Web Hosting Servers

• Video Servers

Network Elements – Technology Options

• Corporate / SME / SOHO

• Residential User

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BROADBAND NETWORK COMPONENTS

Dual Homed Ring

2 Fiber SM G.652

DSLAM

Internet

MPLS

BBRAS

Internet Gateway Router

GigE

GigE

GigE

Backend

•DNS•DHCP•AAA

Core Network Access

•Voice Services Server•Internet Data Services Server•TV/Video Services Servers

FTTH 100M

M/CSTB

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CORE NETWORK TECHNOLOGIES

BB Core Technologies:

Core Network: Architecture

• Ring• Single Homing• Dual Homing

• Mesh

Technology•ATM / IP / Ethernet• SDH• SDH over CWDM / DWDM

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RING ARCHITECTURE

Aggregation Ring

2 Fiber SM G.652

Core Switch

Collector Ring

Advantage•Low Cost•Simple ArchitectureDisadvantage•Hub – Potential Single Point failureTarget Application•Towards Access and Low Capacity Core

Advantage•Highly Reliable•Disadvantage•High Cost Solution.Target Application•High Capacity Core

Single Homed Dual Homed

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MESH ARCHITECTURE

Core Ring

Dual-Homed Mesh

Advantages• Extremely Reliable• Protection against Equipment / Fiber failure

Disadvantages• Very Complex and Costly to implement

Target Application• Highest Tier in Core

Mesh Network

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CORE TECHNOLOGIES

Technology Options on Core

1. ATM Backbone2. IP / Metro Ethernet3. SDH / CWDM / DWDM.

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ATM BACKBONE

Traditional ATM Backbone Core

Benefits:1. High deployment across the world2. Stabilized Technology3. Aggregation through multiple E1’s or upto STM 16

rings.4. Good for aggregating Higher bandwidths.

Drawbacks:1. ATM pvc uses 10% overheads2. Higher Provisioning time.

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ATM BACKBONE CORE

E

D

Broadband RAS

A

STM4/STM16

DSLAM for Residential Internet Access– Traditional Way

xDSL xDSL

xDSL xDSL

B

ATM MESH

RFC 1483Bridged Access

RFC 1483Bridged Access

Internet

RFC 1483Bridged Access

STM4/STM16

STM4/STM16STM4/STM16FTTH 100M

LAN Switch

Metro Ethernet

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METRO ETHERNET CORE

Metro Ethernet Core

Benefits:1. Deployment has started in Huge way across the world2. Aggregation through Fast Ethernet or Gigabit

Ethernet.3. Highly recommended for high bandwidths

requirements.

Drawbacks:1. Technology getting standardized2. Limited support for VLAN’s.3. Single broadcast domain.

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BROADBAND TECHNOLOGIES & SERVICES

Ethernet ServiceConnectivity Provider

DSLAM for Residential Internet Access– Next Generation

FE/Gig

FE/GigFE/Gig

FE/Gig

FE/Gig

xDSL xDSL

xDSL xDSLInternet

Internet Gateway Router

Broadband RAS

IPDSLAM

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SDH / CWDM / DWDM CORE

SDH NetworkSTM 1/4/16

AggregationRing (CWDM/DWDM)

2 Fiber SM G.652

DSLAM traffic going to the core through Metro Ethernet

xDSL xDSL

Metro Transport and Aggregation

Network

Inter-City Backbone Network

Ethernet UNI

Ethernet UNI

Internet

MPLS

BBRAS

Internet Access Router

Internet Gateway Router

GigE

GigE

GigE

Backbone

SDH

STM1/STM4 on Sonet

ATMSTM1/STM4on ATM

Core Switch

• Voice ServicesServer•Internet Data Services Server•TV/Video Services Servers

•DNS•DHCP•AAA

Aggregation Node

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BROADBAND SERVICES

•Multiple Technology Options for Changing Needs

•Need for multiple service offering

•Focus on Centralized Management and Provisioning

THANK YOU