INTRODUCTION TO BROADBAND SERVICESRTTC,HYDERBAD

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CONTENTS OVERVIEWBROADBAND CONNECTIVITY BROADBAND ACCESS TYPES TECHNOLOGY OPTIONS FOR BROADBAND SERVIECES WIRELINE BROADBAND ACCESS TECHNOLOGY VARIOUS ACCESS TECHNOLOGIES OTHER ISSUES

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Broadband Is...High SpeedMegabits: Millions of bits per second at least in one directionAlways onContinuous connection to the outside worldBidirectionalHigh speed from the home as well as to the homeCan see the home from the outside

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BROADBAND CONNECTIVITY:DEFINITIONAn always-on data connection that is able to support interactive services including Internet access and has the capability of the minimum download speed of 256 kbps to an individual subscriber from the Point Of Presence (POP).

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What Is Broadband?Different technologiesNarrowBand2.4 kbps 128kbpsBroadband256kbps 8000kbpsLAN1000kbps 100Mbps / Giga Ethernet

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NETWORK EVOLUTION - VOICEVoicePOTS/PayphoneISDN BRIE1 leased linesADSL accessSHDSL accessTV & VODCPECuOSP GE L2 RingxDSLSTBEdge Video ServersGE`RASB-RASISP NOCClass 5 LE+ DATA+ TV & VIDEORSUDLCDLCDial-up InternetHigh-Speed InternetTV & VoDIP-DSLAMIP-DSLAMIP-DSLAMIP-DSLAMCentral Video ServersEdge Video ServersIncremental infrastructure by way of DSLAMs and IPTV solution to provide High-speed Data and TV & Video ServicesOSS/BSSISP InfrastructureBroadcast TV Head-endWi-Fi+ Video PhoneHome Gateway

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BROADBAND APPLICATIONS1. Personal Services High Speed Internet Access Multimedia2. Govts. Public services E-governance E-education Tele-medicine3. Commercial services E-commerce Corporate Internet Videoconferencing 4. Video & Entertainment services Broadcast TV Video on Demand Interactive gaming Music on Demand Online Radio (256 Kbps and above)

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BROADBAND APPLICATIONS

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BROADBAND APPLICATIONSVideo On Demand (VOD) Allows subscribers to watch any pre-loaded program at anytime with full DVD like controlsBroadcast (BTV) & Time-shifted TV (TVOD)Besides regular BTV services, TVoDSL provides subscribers with virtual DVD controls to pause, start, stop, rewind and fast forward live TV programsUsers also have the flexibility to watch any previous broadcasted programs without pre-recording (nPVR)Pay-Per-View (PPV) /near-Video on Demand (nVOD)Programs broadcast according to a pre-set schedule with subscribers having the option of watching and paying for individual programsInteractive TV (iTV)Video Phone / Video Conferencing / WebCamAdditional VAS (t-commerce, etc.)Advertising [Targeted, Multicast]

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Broadband communications technology can be divided broadly into wireline and wireless technologies. Wireline technologies include traditional telephone lines, coaxial cable lines, and fiber optic lines. Wireless communications involve cellular and fixed wireless technology, high speed short range communications and satellite transmission.BROADBAND ACCESS TYPES

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Broadband TechnologiesWirelessWirelineTECHNOLOGY OPTIONS FOR BROADBAND SERVICES

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Factors in Broadband Access ChoicesPopulation densityExisting infrastructure (e.g., twisted pair, cable, fiber)Government policiesCompetitive and regulatory dynamicsTechnology evolutionFarmHomesMDUGigE FiberCable modemTwisted pair DSLSatelliteCity: High-rise multi-family unitsSuburbs: Individual single-family unitsRural: isolated single family unit

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Cable Modem Types

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Advantages and Disadvantages of ADSLAdvantagesAlways onNo usage chargeInexpensiveFastNo engineer installEasy to set upWider coverage as almost every house has a copper pair!Can use telephone at the same time as being onlineMinimum 3 month contract with some providersWide choice of products within the ADSL portfolioEasy to migrateDisadvantagesMust have a BSNLtelephone line to use ADSL (At the moment!)Not suitable for serversContention issuesDistance limitsLocal exchange must be ADSL enabledDACS can cause problemsAlarms that contact authorities via phone line can be problematic with an ADSL installation

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Digital Subscriber Lines (DSL) on copper loopDSL has proved to be an important technology for provisioning of Broadband services through the copper loop. The owners of copper loop have to be given a high priority because their role is critical as key drivers in the Broadband service market using DSL.BSNL and MTNL as well as other access providers are expected to aggressively use their copper loop infrastructure for providing Broadband services through this technology

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ADSL rates and channel frequency band allocation in local loop

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ADSL Data Rate - Wire Size Distance

ADSL

Data RateWire SizeDistance1.5-2.0 Mbps0.5 mm18000 Feet5.5 Kms1.5-2.0 Mbps0.4 mm15000 Feet4.6 Kms6.1 Mbps0.5 mm12000 Feet3.7 Kms6.1 Mbps0.4 mm9000 Feet2.7 Kms

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ADSL Deployment Today

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Broadband Access using ADSL

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ADSL Network Architecture

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DSL Technologies Evolution of NetworkSPLITTERS Central OfficeHome/OfficeCurbADSL up to 5KmSHDSL (PAM16) up to 10KmOLTDSLAM MSAPVDSL up to 1.5KmFiberVoDSLVOICEFiberMulticast4-wireSHDSL Voice SwitchIP PhonePOTSIP PhonePOTS

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DSLAM A digital subscriber line access multiplexer (DSLAM) delivers exceptionally high-speed data transmission over existing copper telephone lines A DSLAM separates the voice-frequency signals from the high-speed data traffic and controls and routes digital subscriber line (xDSL) traffic between the subscriber's end-user equipment (router, modem, or network interface card [NIC]) and the network service provider's network

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A DSLAM takes connections from many customers and aggregates them onto a single, high-capacity connection to the InternetDSLAMs are generally flexible and able to support multiple types of DSL in a single central office, and different varieties of protocol and modulation -- both CAP and DMT, for example -- in the same type of DSLThe DSLAM may provide additional functions including routing or dynamic IP address assignment for the customers. DSLAM

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DSLAM is an integrated hardware and software system that allows the user to access Broadband services as well as originate and terminate telephone calls over the same single pair of copper wiresDSLAM

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DSLAM aggregates the subscriber linesDSLAM separates Voice and Data of the SubscriberVoice is given to the exchange switchData is fed to the IP Network through the LAN SwitchDSLAMs have been categorized in to 6 types based on no. of ports (480, 240,120, 64, 48 & 24) provided and planned for deployment based on the expected demandDSLAM

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DSL BROADBAND DEPLOYMENT

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Typical Connectivity from DSLAMDSLAMSplitterADSL eqpt.TelephoneDSLAM

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Connection Topology1. ADSL eqpt. 2. LJU 3. Splitter 4. Telephone 5. Computer 6. Eth Cable. 7. Telephone Line.

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Connecting Procedures

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Other CPEs Zoom ADSL Modem 5515( 8Mb, Eth), X5V (USB), H08-15810 (USB, Eth)3Com U.S.Robotics (USR9001) Eth,8MbpsCisco (WIC-1ADSL) (8Mb, Eth) DSL ModemsZyxel Prestige 841(15Mb, Eth), 782R (8Mbps, USB), 841C (15Mb, RS232C)

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BroadbandCable ModemFast 512kbps up to 1024kbps currently for domestic useEasy to useAlways onLow latencyEngineer installedCompetitively priced if cable already installed

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Subscriber Service Selection Center (SSSC)Broadband Remote Access Server (BBRAS)LAN Switch DSLAMADSL Modem Element Management System EMSNETWORK ELEMENT

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MA5200G-8MA5200G-4BBRAS

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BBRAS

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S8016S6506RLAN SWITCH

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SMARTAX MA5300 IP DSLAMSMARTAX MA5105 IP DSLAMDSLAM

BSNL Tariff

TARIFF For Broadband

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Initial and Other Charges

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DataOne Home Plans

ParticularsHome500Home1000Home1800Home3300Bandwidth256kbps384kbps512kbps1 MbpsMonthly Charges(Rs.)500100018003300Discounted Annual Payment Option to Customers(Rs.)5000100001800033000Download / Upload Limit(GB)1 GB2 GB5 GB10 GB

Security DepositNil2 Months Rental2 Months Rental2 Months Rental

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DataOne Home Plans

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DataOne Business Plans

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DataOne Business Plans

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Conditions for providing free Modem

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BroadbandCable ModemFast 512kbps up to 1024kbps currently for domestic useEasy to useAlways onLow latencyEngineer installedCompetitively priced if cable already installed

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Applications of BroadbandBasic WWW browsing and Email accessRun Servers (Web / FTP)Business tariff, can depend on companySome technologies are asymmetric (cable, ADSL)Video On Demand (VOD)Audio Streams (Internet Radio)Fast File Transfers (Possibility of downloading large files in short period of time)

Table of comparison for speeds of broadband technology

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CONCLUSIONThe introduction of broadband technologies, including but not limited to DSL, cable, fiber, satellite, and fixed and mobile wireless. Has enabled traditional and new forms of communication to become a reality throughout the world. Because physical infrastructure and geography are vastly different from country to country, technology that works well in one geographic area may not work as well in another. Therefore, it is up to each individual locality to determine the technologies that best meet its needs.

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CONCLUSIONOne fact that holds true globally is that broadband technologies enable many applications that provide enormous social and economic benefits to citizens Bandwidth requirements for emerging applications are increasing around the world often due to newfound combinations of multimedia applications that include audio, video and data.

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CONCLUSIONTo handle the increasing bandwidth demand, localities are considering upgrading their current telecommunications infrastructure or installing new infrastructure It is essential that communities and operators consider the present and future needs of their citizens when examining the most appropriate systems Broadband should be considered an accelerator of economic development

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