ADSL Slideshow07

Views:
 
Category: Entertainment
     
 

Presentation Description

No description available.

Comments

By: reyadhkhled (40 month(s) ago)

Nice

By: Krist1991 (44 month(s) ago)

plz i ned this presantation today

By: asrasr03 (44 month(s) ago)

thank u i need this ppt for urgent fplz forwd dis ppt to my email asrasr03@gmail.com

By: mahesh.rman (44 month(s) ago)

tnq u..... & plz send me this ppt. if u have documents plz send me.... my mail id mahesh.rman@gmail.com

By: seymiyon (46 month(s) ago)

pleas esent this PPT to mail seymiyon@gmail.com

See all

Presentation Transcript

Asymmetric Digital Subscriber Line Tutorial: 

Asymmetric Digital Subscriber Line Tutorial

Tutorial Outline: 

What Is ADSL ? How Does It Work ? Architectural Options What Can ADSL Do ? Status of the Technology The Future Tutorial Outline

Market Status of ADSL Technology: 

Market Status of ADSL Technology ADSL is the #1 Broadband Choice in the World ADSL is available in every region of the world ADSL is capable of providing up to 50 Mbp, and supports voice, video and data. Other forms of DSL can reach even 100 Mbps! The new DSL network is IP-centric There is broad equipment interoperability and there are established test specifications for ADSL, ADSL2plus, SHDSL, and VDSL Finally, ADSL and home networking are a natural fit as DSL effectively supports multiple applications for multiple uses via each DSL connection.

“Evolution of Digital Access”: 

Voiceband Modem ISDN ADSL FTTH FTTx, VDSL2, ADSL2plus Enhanced Copper Hybrid Fibre/Copper Pure Fibre “Evolution of Digital Access”

Today there are various DSL Technology Options: 

Today there are various DSL Technology Options

Many options: 

Many options Distance x1000 Feet ADSL2+ VDSL2 Bonded ADSL2+ 2.4 GPON (32-split) EFM Active 100Mbps EFM Active 1Gig

Simple overview of ADSL in the phone network: 

Simple overview of ADSL in the phone network POTS- Plain Old Telephone Service

ADSL Equipment: 

Residential Customer ADSL Modem or Gateway Customer Premises Equipment Central Office Building ADSL Rack of Line Cards Standard Telephone Lines ADSL Equipment

Reach of ADSL: 

Reach of ADSL Typically ADSL can reach as far as 18 kft from the central office To extend the reach, service providers have a host of options, outlined in the white paper DSL Anywhere v.2

“Today’s Typical Network” : ADSL: 

ADSL 1.5 to 8Mbit/s 9.6 to 640kbit/s Broadband Network Internet Video Servers Live Broadcast Telephone Network “Today’s Typical Network” : ADSL

In the home: ADSL Modems Keeping internet traffic from interfering with phone service: 

ADSL Modem POTS Filter Mbit/s kbit/s ADSL Modem POTS Filter POTS Linecard Mbit/s kbit/s Line Exchange End Customer End In the home: ADSL Modems Keeping internet traffic from interfering with phone service

Basic Architecture: 

CPE or PC ISP ADSL Linecard Router Ethernet Hub/Switch 10 base T Ethernet 10 base T Ethernet 10 base T or 100 base T 45 or 155 Mbit/s ATM or Ethernet ADSL Remote Basic Architecture

IP Architecture Quality of Service (QoS) Breakthrough!: 

IP Architecture Quality of Service (QoS) Breakthrough! DSL Forum’s TR-059 specifies IP Routed Network Architecture to support a mix of IP based services including IP Video from an Application Service Provider, by employing DiffServ. Or IP Transport

Building on TR-059 Evolving Broadband Access: 

Building on TR-059 Evolving Broadband Access TR-101: Migration to Ethernet Based DSL Aggregation WT-156: Using GPON Access in the Context of TR-101 Universal Access Network Architecture: Fiber or Copper

Slide15: 

What can you do with ADSL? Internet Access & File Sharing Video Broadcast TV Video On Demand Voice over IP via DSL Teleworking Online Education & Shopping Telemedicine Online Gaming

For most applications speed is not enough- Customers want a Quality Experience: 

For most applications speed is not enough- Customers want a Quality Experience New! DSL Forum TR-126 : Triple Play Quality of Experience (QoE) Requirements Compendium of guidelines for QoE dimensions, measurement and provisioning for different applications: Broadcast TV, VoD, Premium Video Including Packet Loss Ratio guidelines for SDTV and HDTV Voice Best Effort Internet Access & others

What is the DSL Forum doing to help develop the potential of DSL?: 

What is the DSL Forum doing to help develop the potential of DSL?

Current Activities: 

Technical Testing & Interoperability Interoperability test plans for VDSL2 Plugfests & ITL program Operations & Network Management ADSL2/2plus & VDSL/2 element management BroadbandHome Technical CPE requirements & management TR-069 remote management work & related test events Architecture IP Ethernet Policy Control Framework Video QoE over DSL Marketing BroadbandSuite Education Plan Application Notes for service delivery of key applications, ie IPTV, VoIP, Teleconferencing TR & Interop messaging Summit / Best Practices Executive Summits & industry panels Ambassador Global speakers bureau Marketing Communications Tradeshows, Conferences, Website, Events & Public Relations Current Activities

What’s Next? New Commercial Applications: 

What’s Next? New Commercial Applications Alternative access solution for WiFi, WiMAX, Cell Tower backhaul and beyond

Use of DSL to feed WiFi Hotspots: 

BRAS DSLAM ADSL Modem Temporary Office DSLAM SHDSL Modem Home & Banks Airport, Train Terminal, Hotel, University, Office DSLAM Use of DSL to feed WiFi Hotspots Rule #1 : Make sure the remote DSL router will “auto re-boot”! VoIP over DSL is also used at these Wi-Fi hotspots

Future Opportunities : WiMax (Broadband Radio) : 

Future Opportunities : WiMax (Broadband Radio) BRAS Middle Mile Aggregation Metronodes & Core DSLAM DSL modem WiMAX combined with DSL) Internet GW voice GW Base stations (could be on CO roof) fixed nomadic Internet

2G & 3G Mobile Backhaul today: 

2G & 3G Mobile Backhaul today 3G Node B 3G RNC E1 ATM ATM Network ATM N x E1 ATM 3G Node B

Use of SHDSL to feed 3G cellular base-stations over ATM DSL: 

Use of SHDSL to feed 3G cellular base-stations over ATM DSL ATM Network Modem CES i/if Leased Line NT DSLAM CR I/f ATM / Sym DSL Service Management VPN / Billing / SLA Central Office Node B Node B RNC This was easy with ATM DSL networks : Just use ATM AAL2 for 3G or ATM AAL1 (TDM circuit emulation) for 2G  BUT – DSL Networks are moving away from ATM to Ethernet & IP  ATM / Sym DSL ATM Switch Modem CR I/f BTS

Drivers to use DSL for Mobile Backhaul: 

Drivers to use DSL for Mobile Backhaul Reduce today’s 2G & 3G transmission costs (voice & data) Potential application for SHDSL & bonded SHDSL to replace n*T1 and n*E1 transport Focus on up to 4 T1s or E1s per cell site beyond that radio/microwave backhaul is probably more cost effective DSL-based solutions must be competitive w.r.t. T1 & E1 leased line costs Reduce future transmission costs associated with High Speed Downlink Packet Access (HSDPA) data Possible application for ADSL2plus transport Reduce future transmission costs associated with High Speed Uplink Packet Access (HSUPA) data Possible application for ADSL2plus Annex M & bonded ADSL2plus Annex M

Conclusion- the DSL Forum’s Role: 

Conclusion- the DSL Forum’s Role

Active Liaisons- We don’t work alone: 

Active Liaisons- We don’t work alone

DSL Forum- Continuous work to enhance DSL: 

DSL Forum- Continuous work to enhance DSL

Asymmetrical Digital Subscriber Line Introduction Slide Show : 

Asymmetrical Digital Subscriber Line Introduction Slide Show Thank You for Viewing!