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XDSL Technology & GSV Products. Victor Zhou 2002.5.24. GT03001V1. What are xDSL?. Stand for x Digital Subscriber Line Public network access technologies Data,voice,and video can be carried Over twisted-pair copper wire on the last mile Between a network service provider CO and CPE.

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Xdsl technology gsv products

XDSL Technology & GSV Products

Victor Zhou

2002.5.24

GT03001V1


What are xdsl
What are xDSL?

  • Stand for x Digital Subscriber Line

  • Public network access technologies

  • Data,voice,and video can be carried

  • Over twisted-pair copper wire on the last mile

  • Between a network service provider CO and CPE


Different type of xdsl
Different Type of xDSL

  • ADSL

    Asymmetric Digital Subscriber Line

  • HDSL

    High Bit-Rate Digital Subscriber Line

  • SDSL

    Symmetric Digital Subscriber Line

    Single-Line Digital Subscriber Line

  • VDSL

    Very High Bit-Rate Digital Subscriber Line


Other technology term
Other Technology Term

  • ADSL Lite

  • R-ADSL

    Rate-Adaptive Digital Subscriber Line

  • MDSL

    Moderate Speed Digital Subscriber Line

  • CO

    Central Office

  • DSLAM

    DSL Access Multiplexer

  • CPE

    Customer Premise Equipment


Other technology term cont
Other Technology Term (cont)

  • FDM

    Frequency Division Multiplexing

  • DLC

    Digital Loop Carrier

  • CAP

    Carrierless Amplitude Modulation

  • DMT

    Discrete Multitone

  • QAM

    Quadrature Amplitude Modulation


Other technology term cont1
Other Technology Term (cont)

  • POTS

    Plain Old Telephone Service

  • PSTN

    Public Switched Telephone Network

  • Spiliter


Technology application comparison
Technology&Application Comparison

  • Technology Speed Distance Application


How adsl modems work
How ADSL Modems Work

Echo Cancellation(EC)

FDM

Upstream

downstream

upstream

downstream

voice

voice

freq

freq

0-4khz

0-4khz

25khz

25khz

200khz

1104khz

200khz

1104khz


Dslam structure
DSLAM Structure

co

Internet

IP

Router

PC with NIC

DSLAM

Set -box

ATU-R

PC/Telephone

ATM

Server

ATM

Server

HDSL

Multi- service

SDSL

PC/Telephone

Other

Broadband

Equipment

Other

Broadband

Equipment

RAM

Multi- service

PSTN

Switch

ATU-R: ADSL Termination Unit-Remote

RAM: Remote Access Multiplexer




Fourteplus overview

Quad DSP

Quad AFE

GS7266+

Line Drivers

FourtePlus Overview

  • Highest Performance for All Market

    • ITU G.DMT, G.Lite

    • ANSI T1.413i2

    • Annex A, B, C & H

  • Highest Density

    • Total Area – 1.4 sq. in./ 9 sq cm

  • Lowest Power

    • G.DMT: 1.35 W - G.Lite under 1.0 W

  • Fastest Time-to-Market

    • Using Existing Production Fourte Firmware

  • Highest Functionality


Titanium g16 product features
Titanium G16 Product Features

  • Highest Density, Lowest Power DMT Available

  • Enables Rapid time to Production

  • Lowest Power

    • G.DMT: 1.2 W - G.Lite under 1.0 W

  • Highest Density

    • Total Area 7.5 sq cm (1.1 sq. in.)

  • Supports all ADSL Markets and Standards

    • ITU G.DMT, G.Lite

    • ANSI T1.413i2

    • Annex A, B, C & H

  • Highest Functionality

    • Higher Speeds (12 Mbps)

    • Concurrent Voice Support

GS7866

x 4

x 16


One solution for all markets

GS7266+

One Solution for all Markets

World Wide

ILECs – G.DMT & T1.413i2

CLECS – G.DMT & G.lite

One hardware design supports all Standards

and Markets through firmware downloads

Best

Performance

Firmware

Downloads

DMT: 12 Mb/s Down, 1 Mb/s Up

Lite: 4.5 Mb/s Down, 1 Mb/s

Application

Solutions

ADSL over POTS

8 Mb/s Down, 1 Mb/s Up

4B3T

2B1Q

ADSL over ISDN

ADSL/SDSL

For Japan

Europe

(annex B)

Common

Hardware Platform

Annex C: 8 Mb/s Down, 1 Mb/s Up

Annex H: 192 kb/s to 3 Mb/s Symmetric

Japan

(annex C/H)


Vdsl markets
VDSL Markets

GlobespanVirata provides the only multi-port, multi-service chipset addressing all ADSL/ VDSL markets:

  • Digital Loop Carrier (DLC) / Optical Network Unit (ONU)

  • Multi Dwelling Unit (MDU)

  • Multi Tenant Unit (MTU)

  • Multi Hospitality Unit (MHU)

DLC/ONU

FTTC

MDU

FTTB

Central

Office

FTTB

MTU

FTTB

MHU


Globespanvirata adsl vdsl advantage
GlobespanVirata ADSL/ VDSL Advantage

  • Fastest Time to Production with lowest system cost

    • Based on field proven ADSL (8th generation) architecture

    • Enables highest density and lowest power solutions

    • Leverages cost reduced ADSL overhead (e.g. POTS splitters, power supplies, memory, etc)

    • Common API with ADSL for minimal software development

  • ADSL/ VDSL convergence

    • Maximum connectivity via ADSL for longer reach

    • Configurable spectrum for non-ADSL service compatibility

    • Configurable PSD for ADSL service co-existence


Titanium express convergence

MDU- 22/3 Mbps up to 3 kft

ONU- 16/1 Mbps up to 4.5 kft

DLC- ADSL connectivity up to 16 kft

Titanium Express Convergence

Only Titanium Express supports ADSL and VDSL =>

12 times the coverage provided by QAM based solutions

Titanium Express

QAM

10BS

Only Titanium Express builds upon ADSL designs =>

Minimum development effort & risk for fastest time to production


Titanium express compatibility
Titanium Express Compatibility

Only Titanium Express has programmable G.993.1 compliant egress =>

Minimal impact on existing services

Maximum quality of VDSL service

HomePNA

(4MHz-10MHz)

INFX

non-compatible

ADSL/VDSL

(25kHz-5.2MHz)

BRCM

non-compatible

Amateur Radio Interference

(1.8MHz-2MHz)

Digital Phone Service

(0-100kHz)


Leader in the shdsl market
Leader in the SHDSL Market

Titanium

The GlobeSpan Legacy of DSL Convergence

ADSL

G.DMT, G.Lite, T1.413 Annex A

Fourte

G24/Octane

FourtePlus/G12/G16

ADSL

Annex A

Annex B

Annex C

ADSL

Annex B

ADSL

Annex A

Annex B

Annex C

Annex H

ADSL

Annex A

Annex B

Annex C

Annex H

SHDSL

ADSL

Annex C

Annex

H

Orion

SHDSL







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