Thurs 21st Oct 2004 Fran Holt - Engineers · PDF fileThurs 21st Oct 2004 Fran Holt. 12/20/2004...

12/20/2004

Lucent Technologies - Proprietary

Thurs 21st Oct 2004Fran Holt

12/20/2004


AgendaDSL EvolutionDSL IntroductionDSL MarketDSL VariantsADSL Emerging DSL technologiesDSL Applications Lucent product placement

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Evolution of Digital Access

56K

128K

6M

55M

100M+

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DSL Introduction

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Digital Subscriber Line

• DSL is a technology for bringing high-bandwidth info to homes & small businesses over ordinary copper telephone lines.

• Voice signals (~3.4KHz) use only a fraction of the available capacity on the wires. DSL exploits this remaining capacity to carry digital info on the wire without disturbing the line's ability to carry conversations.

• DSL (or more specifically ADSL) operates at frequencies of between100 kHz – 1.1 MHz above the voice channel and therefore splits your phone line into a voice channel and a DSL high speed channel whichoperates at speeds of up to 6 Mbps.

• DSL is a distance-sensitive technology ie. as the cable length increases, the signal quality and connection speed decrease. ADSL service has a max distance of 18,000 feet between the DSL modem and the DSLAM

• xDSL refers to different variations of DSL ie. ADSL, HDSL, RADSL etc

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DSL Network

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• Splitters are used at the customer premises split the 0-4kHZ spectrum used for voice from the higher frequencies the DSL modem will use to pass the data traffic (using micro-filters).

• Factors which affect DSL performance include:– Bridge taps (extensions/taps off the link to CO)– Loading Coils (small amplifiers used to boost voice signals)– Wire Gauges – Distance

DSL - Introduction

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DSLAM

• Aggregates connections from many customers onto a single, high-capacity connection to the IP or ATM network.

• Flexible and able to support multiple types of DSL in a single central office.

• Can also be deployed in multi-unit (MxU) environments, which typically consist – commercial multi-tenant unit (MTU)– residential multi-dwelling unit (MDU)

• Vast majority of DSLAM’s utilize ATM-based switch fabrics and WAN uplink interfaces.

• Internet Protocol (IP)-based DSLAMs, which incorporate IP processing/routing/aggregation capabilities, are gaining increased acceptance, especially in the Asia-Pacific (APAC) region.

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Central Office / CoCentral Office / Co--LoLoAccess to unbundled loopsAccess to unbundled loopsTraditional DSLAM deploymentTraditional DSLAM deployment

CO / CLECCO / CLECRegional CenterRegional Center

Remote TerminalRemote TerminalOutdoor configurationsOutdoor configurationsTier 2 & 3 residential suburban Tier 2 & 3 residential suburban

and ruraland rural

Fiber In The LoopFiber In The LoopFiber deeper into the networkFiber deeper into the networkShorter Distances / Higher BandwidthShorter Distances / Higher Bandwidth

Remote TerminalRemote TerminalIndoor configurations Indoor configurations MTU/MDUMTU/MDUTier 1 & 2 urban and suburbanTier 1 & 2 urban and suburban

DLCs in Remote TerminalsDLCs in Remote Terminals

DSLAM & MxU

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DSL Market

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123 Million Broadband Subscribers Worldwide Q2 2004source: DSL Forum

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Technology Split in top 10 Broadband Countries Q2 2004sourve: DSL Forum

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Top 20 DSL Countries by Total Subscribers Number Q2 2004source : DSL Forum

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1,100,000,000 Potential DSL Users World-wide

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Market Trends

• [CY 2003] Worldwide DSL POTS + DSL port shipments ~ 20.8Million– 80% were POTS, 20% were DSL– 5.5 Million shipped to NAR (North America Region)– 15.3 Million for the rest of the world

• [CY 2003] Lucent’s market position– 2nd to Alcatel in the global ATM DSLAM market (7.3% of the market revenues according

to the Synergy Research Group– 4th overall behind Alcatel, Huawei and NEC in terms of DSLAM port shipments according

to multiple industry sources.

• [Q1 2004] Lucent increases global ATM DSLAM market revenues to 8.7% (according to Synergy), and has announced several high-profile customer wins and contract expansions in the past few quarters.

• To date, Lucent has already installed more than 28,000 Stinger access concentrators and more than 6 million ports in more than 25 countries.

• Worldwide Market Leaders :-– Leader in POTS => Huawei [36%] (90% of their shipments were in Asia)

– Leader in DSL => Alcatel [28%] (#1 in NAR)Lucent is listed as #3 outside NAR for POTS/Specials – 6.1%Lucent is listed as #2 outside NAR for DSL – 17.3%

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• Lucent has garnered DSLAM customer wins witho Telefónica de España (Spain)o France Telecomo Telefonica Brasilo EUR 75 million extension of its DSL contract for Telekomunikacja Polska (TP)o Finnet Com OY (Finland)o Uni2 (a France Telecom subsidiary in Spain)o Bell Canadao Portugal Telecomo Sweden’s Bredbandsbolaget (B2).

• Compound Annual Growth Rate (CAGR) fo 2003 – 2008– POTS projected at 6%– DSL projected at 8%

• Lucent faces number of competitive challenges moving forward into 2004. For example, in the Europe, Middle East and Africa (EMEA) region, Lucent must contend with Alcatel, ECI Telecom, Marconi, and Siemens, while Asian vendors such as Huawei, NEC, Samsung, Sumitomo and UTStarcom have already become very serious competitive threats to Lucent in multiple international markets.

Market Trends

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DSL in Ireland

• Many businesses in Ireland are interested in switching to broadband, few have done so yet.

– 22% of techcentral survey respondents said that their company was now accessing theInternet via a high-speed connection.

– 18% were using DSL (Digital Subscriber line)– 11% had a leased line– 7% accessed the Net via a wireless broadband connection – 5% through a cable modem. – 59% use a dial-up access

• Eircom is the leading ISP at present with 48% of small and medium sized companies currently subscribing to one of its services. Approximately, 16% of survey respondents said that they subscribed to services from Eircom's main rival, EsatBT, while 7% were with UTV Internet and 4% with Via Networks. Other ISPs cited by readers included NTL, Skynet, Sprint, IE Internet, ANU and eLive.

– Eircom• Eircom Broadband Home Starter (4 GB download, 1 GB upload limit) - €39.99 per month• Eircom Broadband Home Plus (8 GB download, 1 GB upload limit) - €54.45 per month

– UTV Internet • Clicksilver DSL service (512k download, 128k upload limit) - €47.50 per month

– Digi-Web DSL Broadband• HomeJet (home use, 512K download) - €38.99 per month• BizJet (SOHO, 512K download) - €45 per month• BizJet Enhanced (small-medium business, 1M download) - €89 per month• BizJet Enterprise (large business/school, 2M download) - €169 per month

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DSL Variants

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• ADSL (Asymmetric Digital Subscriber Line) – Most popular DSL type. Up to 6.1 megabits per second of data can be sent

downstream and up to 640 Kbps upstream. • G.Lite or DSL Lite (DSL Lite, splitterless ADSL or Universal ADSL)

– A slower ADSL that doesn't require splitting of the line at the user end but manages to split it for the user remotely at the telephone company.

– ITU-T standard G-992.2, provides a data rate from 1.544 Mbps to 6 Mpbsdownstream and from 128 Kbps to 384 Kbps upstream.

• HDSL (High bit-rate Digital Subscriber Line)– One of the earliest forms of DSL, is used for wideband digital transmission– Symmetrical - equal amount of bandwidth is available in both directions. – HDSL can carry as much on a single wire of twisted-pair cable as can be

carried on a T1 line (1.544 Mbps) or an E1 line (2.048 Mbps). • IDSL (ISDN DSL)

– IDSL is somewhat of a misnomer since it's really closer to ISDN data rates and service at 128 Kbps than to the much higher rates of ADSL.

• RADSL (Rate-Adaptive DSL) – RADSL is an ADSL technology from Westell in which software is able to

determine the rate at which signals can be transmitted on a given customer phone line and adjust the delivery rate accordingly. Westell's FlexCap2 system uses RADSL to deliver from 640 Kbps to 2.2 Mbps downstream and from 272 Kbps to 1.088 Mbps upstream over an existing line.

DSL Variants

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• SDSL (Symmetric DSL) – Similar to HDSL with a single twisted-pair line, carrying 1.544 Mbps (U.S.

and Canada) or 2.048 Mbps (Europe) each direction on a duplex line. It's symmetric because the data rate is the same in both directions.

• G.SHDSL (single pair Symmetric high data rate DSL)– ITU-T G.991.2 symmetric, multi-rate DSL combining the best of SDSL and

HDSL2, aimed at users of DSL for voice, data and Internet access services. – Delivers up to 2.3 Mbps per second—compared to 2.0 Mbps for SDSL/– Can be deployed nearly twice as far from the central office (CO) than SDSL,

which is limited to a maximum distance of 18,000 feet. – Can operate in 2 & 4-wire bonded modes (up to 4.6Mbps payload).

• UDSL (Unidirectional DSL) – is a proposal from a European company. It's a unidirectional version of

HDSL. • VDSL (Very high data rate DSL)

– is a developing technology that promises much higher data rates over relatively short distances (between 51 and 55 Mbps over lines up to 1,000 feet or 300 meters in length). It's envisioned that VDSL may emerge somewhat after ADSL is widely deployed and co-exist with it.

DSL Variants

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ADSL

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ADSL

• What is it ?– ADSL depends upon advanced digital signal processing and creative algorithms to

squeeze information through twisted-pair telephone lines.– ADSL is the most standardized DSL type & has the potential to supply B-ISDN services

(video on demand, HDTV, LAN interconnection etc) all over the POTS line.– The ITU approved industry standard for full-rate ADSL is known as G.992.1, or G.dmt

• Capabilities– An ADSL circuit connects an ADSL modem on each end of a twisted-pair telephone line,

creating three information channels • a high speed downstream channel (1.5Mbps to 8.0Mbps)• a medium speed duplex channel (16 to 832Kbps)• a POTS (Plain Old Telephone Service) or an ISDN channel.

– The POTS/ISDN channel is split off from the digital modem by filters, thus guaranteeing uninterrupted POTS/ISDN, even if ADSL fails.

– Downstream data rates depend on a number of factors, including • the length of the copper line, • its wire gauge• presence of bridged taps.

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An ADSL Network

TCP/IPRouter

MUX

ATU-C 1

ATU-C n

ATMSwitch

InternetAccessServer

Work-at-HomeServer

Video on demandServer

Info & AdvertiserServer

ATU-R

ATU-R

Customer #1

Customer #n

DSLAM

Central Office POTS

POTS

POTS 1

POTS n

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• The 2 prevalent Line codes used are – DMT (Discrete Multi-tone) [the open standard chosen by ANSI T1.413 & ITU for full-rate ADSL]

– CAP (similar to QAM) Carrierless Amplitude/Phase Modulation

• The ANSI standard requires that DMT ADSL both FDM & Echo Cancellation techniques are commonly used :-

– FDM (frequency division multiplexing) ie. the freq range is split into upsteam & downstream bandwidths.

– Echo Cancellation ie. eliminate the possibility of a signal in one direction being “confused” with a signal in the opposite direction, and being echoed back.

• DMT divides the upstream and downstream bands into a collection of smaller frequency ranges of approximately 4 kHz each, called sub channels. During transmission, each 4 kHz sub channel carries a portion of the total data rate.

• By dividing the transmission bandwidth into a collection of subchannels, DMT is able to adapt to the distinct characteristics of each telephone line and maximize the data transmission rate.

DMT Line Code “How the bits are sent”

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• ADSL is a Framed transport; the bit stream within the ADSL frame can be divided into a max of 7 bearer channels

– 4 uni-directional downstream bearers (AS0-AS3)– 3 duplex upstream/downstream bearers (LS0-LS2)

• There are 2 major bit categories :-– Fast data buffer (delay sensitive, noise tolerant data eg. audio/video services)– Interleave data buffer (data is reqd to be protected from errors eg. Internet access).

• The individual ADSL frames are organised into ADSL SuperFrames.– A SuperFrame carries 68 ADSL frames– Each SuperFrame is sent every 17ms (each frame is sent every 250us)

DMT Frame Structure “How the bits are organised”

Frame 1 Frame 34Frame 2 Frame 67 Sync

One ADSL SuperFrame every 17 milli-seconds

Fast Byte FECFast Data Buffer Interleaved Data Buffer

One ADSL Frame every 250usecs (1/4000 sec)

Frame 3

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• ADSL uses consellation encoding and decoding of to rebuild “damaged” data on the line – this ensures very high reliability.

• To improve the performance of ADSL system some companies use 16 state 4 dimensional trellis code on top of the consellation encoding.

• Another useful method to increase the ADSL systems reliability is Forward Error Correction (FEC), which is based on Reed Solomon coding method .

• As indicated, the data frame gets its information from two data buffers (interleaved buffer and fast buffer) which are scrambled - this scrambling method makes the error correction and coding more efficient.

Code & Error Correction

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ADSL network types

• ADSL for TCP/IP: End to End Mode• All traffic inside the ADSL Frames are TCP/IP packets.• TCP messages are placed inside IP packets, which are then placed in PPP frames. • The DSLAM places the PPP frame inside the ADSL SuperFrame.• PPP can generate idle bit patterns (7E) when not transmitting IP packets to maintain the

continous “always on” connection.

• ADSL for ATM: Full Service Network• ATM excels at delivering combined traffic streams (voice/video/data)• ATM cells are sent inside ADSL SuperFrames ie. there is a continous flow of fixed-length

53 byte ATM cells packed head-to-tail.• ATM idle cells are used when no data is to be transmitted.

• PPP over ATM• ATM carries IP packets & PPP frames inside ATM cells using AAL5• This is achieved by using PVC’s over the ADSL links & through the ATM enabled DSLAM.• The DSLAM uses VPI’s (defines the site-to-site connectivity) & VCI’s (defines the device-

to-device connectivity) in the ATM cell headers to create the path from the CPE to the ATM backbone.

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DSL vs Cable

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Emerging DSL

Technologies

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ADSL2+• ADSL2+ is the new standard consented by the ITU in January 2003. It is based on ADSL2 and

doubles the maximum frequency used for downstream data transmission from 1.1 MHz to 2.2 MHz. As a result, downstream data rates are increased to up to 24 Mbps on phone lines as long as 3,000 feet, and 20 Mbps on lines as long as 5,000 feet.

• Benefits– Superior rate/reach performance – Enhanced diagnostic capabilities – Improved power management – Bonding for higher data rates – Improved interoperability – Reduces cross-talk

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• Power Enhancements: ADSL transceivers operate in full-power mode day and night, even when not in use. ADSL2+ standard brings in power management modes that help reduce overall power consumption while maintaining ADSL’s “always-on” functionality for the user - enters into a sleep mode when the connection is not being used for extended periods of time.

• Rate Adaption: Telephone wires are bundled together in multi-pair binderscontaining 25 or more twisted wire pairs. As a result, electrical signals from one pair can electromagnetically couple onto adjacent pairs in the binder (known as known as “crosstalk” and can impede ADSL data rate performance). ADSL2 simply detects changes in the channel conditions -- for example, a local AM radio station turning off its transmitter for the evening – and adapts the data rate to the new channel condition.

• ADSL technology standards

ADSL2+

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• ADSL Annexes : ADSL standards include annexes that specify ADSL operationfor particular applications and regions around the world.

– Annex A is designed to work on phone lines enabled POTS. It is the most common application of ADSL, used throughout North America and much of Europe and Asia.

– Annex B works similarly to Annex A, though it is designed to work on phone lines enabled with ISDN instead of POTS, which is common in Germany and other regions.

– Annex C is designed specifically for use in Japan. It allows ADSL to operate with Japan’s special version of ISDN called TCM-ISDN.

– Annex I doubles the downstream of the Annex C, much like ADSL2+ doubles the downstream of ADSL2.

– ADSL2 (G.992.3) Annex L: Reach Extended ADSL2 (RE-ADSL2) provide increased performance on long lines under various crosstalk conditions. (re-adsl2 extends coverage area of 768 kbps service approvimately 37%)

•

ADSL2+

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ADSL2+

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VDSL

• Very-High-Speed Digital Subscriber Line (VDSL) provides 13-to-55Mbpsdownstream and 1.5-to-26Mbps upstream of data over distances of up to 4,500 feet. Typical downstream speeds over loop length are :

• 12.96Mbps – 13.8Mbps 4.5kft• 25.92Mbps – 27.6Mbps 3.0kft• 51.84Mbps – 55.2Mbps 1.0kft

• VDSL can be symmetrical and asymmetrical.• VDSL performance enables service providers to deliver a combination of digital

television, data and regular telephone service on a single twisted-pair copper wire ie. It is intended for (ATM)B-ISDN service deployment.

• Because VDSL is capable of transmitting only over a shorter distance, it will require service providers to deploy fiber optic cable closer to the end user.

• VDSL is well suited to full-service networks with 2 channels of HDTV possible at the highest VDSL bit rates.

• Two competing consortiums are pushing to standardize VDSL.– VDSL Alliance supports VDSL using a carrier system called Discrete

MultiTone (DMT) ,excellent performance even under extreme noise conditions.

– VDSL Coalition favors a line coding scheme based on Quadature Amplitude Modulation (QAM), a single-carrier system that is less expensive and consumes less power.

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• The key to VDSL is that the telephone companies are replacing many of their main feeds with fiber-optic cable eg. Fiber to the Curb (FTTC)or Fiber to the Neighborhood (FTTN).

• A VDSL transceiver is placed in your home and a VDSL gateway in a nearby junction box.

• The VDSL gateway converts the data received from the transceiver into pulses of light that can be transmitted over the fiber-optic system to the central office.

• When data is sent back to you, the VDSL gateway converts the signal from the fiber-optic cable and sends it to your VDSL transceiver

• Benefits– Excellent performance, even under extreme channel and noise conditions – Robust performance when line conditions change – Line testing and probing capabilities, which simplify service provisioning and

troubleshooting for operators – Interoperability with ADSL, which is the most widely deployed DSL

VDSL

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DSL Applications

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Home solutionsvideo-on-demand, voice and other applications

High-speed business access

and next-generation services QoS

Business solutionsintegrated voice, video, data

and fax solutions

New Applications

Multi-Dwelling Unit solutions

office buildings, apartment buildings, hotel and campus

solutions

DSLProducts and

Services

DSLProducts and

Services

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ISP 1ISP 1

ISP 2ISP 2

ATM CoreNetwork

IntegratedAccess Device

(IAD)

ADSL DS3

HDSL2

SDSL

End-user Locations

CellPipe

Carrier Location

Part of an End-to-End DSL Solution

G.lite

OC-3c

Stinger DLSAM

Voice Gateway

NavisAccess

PSTN

PSTN

DS3

GX 550/CBX 500

PathStar

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IAD

ADSL DS-3

OC-3

ADSL

SDSL

End user location

CellPipe and 3rd-party vendors

OC-3

DS-3

ATMNetwork

Stingers

ISP 1ISP 1

Network service provider (CLEC, ILEC, IXC) location

DS-3

Voice

PSTN

PathStarAccessServer

RADIUS Server

Router

ISP 2ISP 2

DSL Terminator

• Provides end-to-end solution from CPE (CellPipe) to COE (Stinger) to circuit aggregation and termination (Terminator)

• Gives Service Providers the choice of integrated layer 3 (via T-1000 module) or distributed (via Terminator)

• Interoperates with Pathstar access server to provide end-to-end feature rich packet VoDSL solution

End-to-End Service Provider Solutions

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Stinger

T1/E1 Trunks(GR-303)

Voice Gateway

Voice(AAL2)

ILEC CO

CLEC Switching Center

Class 5 Switch

IAD

Subscriber

1-24Voice

Loop

LAN

Data(AAL5)

ATM

InternetPSTN

CBX-500 Switch

SubscriberProvider

Business

SDSLADSL

Fax

Video

Voice Packet

Voice and Data Solutions

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TV/VideoTV/Video

LoopMPEG2decoder

VC1 Data (UBR)VC1 Data (UBR)VC2 Video (CBR)VC2 Video (CBR)VC2 Voice (VC2 Voice (rtrt--VBR)VBR)

Home/Tenant Solutions

Applications supported:h Integrated Data/Voice over DSLh Local & Cable TV channelsh Interactive video-on-demandh Internet Access

Ethernet

IAD

ATM/ADSL

Combined Voice, Video & Data Ethernet

Applications supported:h Integrated Data/Voice over DSLh Fax over IPh Multimedia collaborationh Internet Access

Combined Voice, Video & Data

LoopATM/SDSL

Business Solutions

IAD

VC1 Data (UBR)VC1 Data (UBR)VC2 Video (CBR)VC2 Video (CBR)VC2 Voice (VC2 Voice (rtrt--VBR)VBR)

End-User Applications

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Multi-Tenant and Multi-Dwelling Buildings (MTU & MDU)

• Fewer regulatory issues.• Faster return on investment.• Less complexity in infrastructure.• Tenants are a “captive” audience for market testing and selling

additional services.• High concentration of end users in a limited area.• Ability to target specific customer types is increased because

similar types of customers lease similar properties.• Space is less of an issue (for equipment).

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Lucent Product Placement

Lucent Broadband Access Solutions

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Stinger® FS / LS / RT / CR/ MRT

• Complete line of DSL Access Concentrators.

• Central Office, remote terminal and MTU/MDU deployments.

• Segment-leading port densities.

Stinger® LS Stinger® RTStinger® MRT

Stinger FS / FS+

Stinger® CR

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Broadband Access Stinger® Product LineBroadband Access Stinger® Product Line

Stinger® LS• MTU/MDU

• Shallow depth (10”)

• Two models (19” and 23”)

• 360 ports - 19” LS

• 504 ports - 23” LS

Stinger® RT• Outdoor cabinet

deployments

• Environmentally-hardened versions of the two LS models

• 360 ports per 19” RT, 504 ports per 23” RT

Stinger® FS, FS+• Highest Density

DSLAM in theindustry since 1999

• Unmatched features and performance

• 1,008 ports per FS+

Stinger® MRT• 36 & 48 ports

ADSL• 36 ports SHDSL• Rural

deployments• Small Offices• MTU/MDU• 23” and 19”

models

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Stinger® Compact Remote• Environmentally hardened

enclosure.

• Enables use of standard LIM cards.

• Extends DSL services closer to subscriber.

• 1 Stinger® FS+ supports 8 Compact Remotes.

Broadband Access Stinger® Product LineBroadband Access Stinger® Product Line

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Control Modules (CM)• In FS and FS+, Control Modules occupy the center

two slots in the front of the chassis

• In LS and RT, Control Modules occupy the 3rd and 4th right-most slots

• Simplex or duplex operation with independent paths to LIMs and TMs supported

• Control Module functions (common to all CM types):

• 1.6 Gbps ATM switching fabric

• Monitors all slot cards, controls redundancy/protection switching

• Software maintained on CM (TAOS), and downloads SW to LIMs when they initialize

• System management via: NAVIS Access, Command Line Interface SNMP

• 2 PCMCIA slots (for software downloads)

• 10/100 Mbps Ethernet port and craft console port

FS, FS+ LS, RT

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Control Module Family:

STGR-CM-A . . . base Control ModuleSTGR-CM-B . . . same as STGR-CM-A but includes integrated 56K modemSTGR-CM-C . . . same as STGR-CM-B but includes stratum-3 clock

STGRRT-CM-A . . . same as STGR-CM-A but environmentally hardened for use in the Stinger RTSTGRRT-CM-B . . . same as STGR-CM-B but environmentally hardened for use in the Stinger RTSTGRRT-CM-C . . . same as STGR-CM-C but environmentally hardened for use in the Stinger RT

STGR-CM-IP2000-C . . . IP-2000 with copper Gigabit Ethernet (1000BaseT) interface

STGR-CM-IP2000-F . . . IP-2000 with optical Gigabit Ethernet interface, requires purchase of SFP optical module

STGR-SFP-LX . . . Long-haul single-mode fiber (1000BaseLX) moduleSTGR-SFP-SX . . . Short-haul multi-mode fiber (1000BaseSX) module

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Rear ViewFS, FS+ LS, RT

Trunk Modules (TMs)• In FS and FS+, Trunk Modules occupy the

center two slots in the rear of the chassis

• In LS and RT, Trunk Modules occupy the right-most slots

• Simplex or duplex (redundant) operation supported

• Trunk Modules are available with:

• 1 or 2 port DS3 or E3 (coax)

• 1 or 2 port OC3c/STM1 (single-mode fiber, and multimode versions)

• TRAM - 2 OC3cs and 4 DS3s

• OC12c available in 2003

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Trunk Module Family:STGR-TM-OC3-1 . . . single-port OC3c/STM1 . . . single-mode/intermediate-reachSTGR-TM-OC3-2 . . . dual-port OC3c/STM1 . . . single-mode/intermediate-reachSTGR-TM-OC3-1L . . . single-port OC3c/STM1 . . . single-mode/long-reachSTGR-TM-OC3-2L . . . dual-port OC3c/STM1 . . . single-mode/long-reachSTGR-TM-OC3-1M . . . single-port OC3c/STM1 . . . multi-modeSTGR-TM-OC3-2M . . . dual-port OC3c/STM1 . . . multi-mode

STGR-TM-DS3-1 . . . single-port DS3STGR-TM-DS3-2 . . . dual-port DS3STGR-TM-E3-1 . . . single-port E3STGR-TM-E3-2 . . . dual-port E3

STGR-TRAM-D4-O2 . . . Four-port DS3 and two-port OC3c . . . only for use in FS/FS+STGR-TRAM-E4-O2 . . . Four-port E3 and two-port STM1 . . . only for use in FS/FS+

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Line Interface Modules (LIMs)• In FS and FS+, LIMs occupy the seven slots to the

left and to the right of the Control Modules

• In LS and RT, LIMs occupy the 5 or 7 slots to the left of the Control Modules, and alternate slots with LPMs

• LIMs in conjunction with LPMs provide the DSL subscriber interfaces (and DS1/E1 IMA)

• LIMs have 155 Mbit/s serial data path to each Control Module

• LIMs provide aggregation with ATM traffic management for QoS (CBR, VBR-rt, VBR-nrt, UBR)

• 1:n LIM redundancy via use of PSM

FS, FS+ LS, RT

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Line Interface Module (LIM) Family:

STGR-LIM-SQ-48 48-port SDSL 2B1Q SDSL up to 2.3 Mbps

STGR-LIM-AD-48 48-port ADSL Annex A Full-rate and G.Lite, line sharing with POTS

STGR-LIM-AD-72 72-port ADSL Annex A Full-rate and G.Lite, line sharing with POTS

STGR-LIM-AB-48 48-port ADSL Annex B Full-rate ADSL, line sharing with ISDN

STGR-LIM-SL-48 48-port SHDSL G.shdsl, supports 2-wire and 4-wire mode

STGR-LIM-SL-72 72-port SHDSL G.shdsl, supports 2-wire and 4-wire mode

STGR-LIM-H2-32 32-port SHDSL/HDSL2 HDSL2/G.shdsl

STGR-LIM-ID-32 32-port IDSL Frame Relay (or PPP) over IDSL w/interworking to ATM

STGR-LIM-T1-8 8-port T1 IMA

STGR-LIM-T1-24 24-port T1 IMA

STGR-LIM-E1-8 8-port T1 IMA

STGR-LIM-E1-24 24-port T1 IMA

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Line Protection Modules (LPMs)

• In FS and FS+, LPMs occupy the seven slots to the left and to the right of the Truck Modules in the rear of the chassis

• In LS and RT, LPMs occupy the 5 or 7 slots to the left of the Control Modules, and alternate slots with LIMs

• LPMs provide over-voltage protections, relays for test access and LIM protection switching

• LPMs contain the connectors for the copper pair terminations

Line Protection Module Family:STGR-LPM-48 48-port LPM with no relays (see not below)STGR-LIM-48-RP 48-port LPM with relaysSTGR-LPM-72 72-port LPM with no relaysSTGR-LIM-72-RP 72-port LPM with relaysSTGRFS-LEM-2 2-port 10/100 Line Ethernet Module used in conjunction with the T1000 LIM

Note: LPMs with no relays are for applications without LIM card protection switching

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Path Selector Module (PSM) and Copper Loop Test (CLT) Modules

• Occupies a LPM slot corresponding to a spare LIM

• PSM function allows protection switching of failed LIM ports to spare LIM on a port-by-port basis

• CLT contains PSM function, but adds integrated loop test capability

PSM and CLT Family:STGR-PSM Supports port-level redundancy for up to 48 ports simultaneously when used in conjunction

with STGR-LPM(2)-nn-RP. Also provides access for an external CLT to a subscriber line.STGR-PSM2 Supports port-level redundancy for up to 72 ports simultaneously when used in conjunction

with STGR-LPM(2)-nn-RP. Also provides access for an external CLT to a subscriber line.STGR-CLT Provides 48-port Path Selector Module plus an integrated test head for remotely controlled

loop qualification and maintenance STGR-CLTE Provides 72-port Path Selector Module plus an enhanced integrated test head for remotely

controlled loop qualification and maintenance

12/20/2004


LineInterface

Modules (14)

ControlModules (2)

Dual PCMCIASlots

10/100 MbpsEthernet port

SerialCraft Port

CoolingAssembly

TrunkModules (2)

LineProtection

Modules (14)50 -pinconnectors

-48VDC LineFilters

AlarmModule

Front View

Rear View

Circuit Pack Summary for FS/FS+

12/20/2004


Stinger® MRT23” Model

Stinger® MRT Family:MRT-AD-36S-SR-56K 23” MRT base unit: 36 ADSL ports w/Splitters and 56K modemMRT-TM-OC3-2 Dual-port OC-3c Trunk ModuleMRT-TM-DS3-2 Dual-port DS3 Trunk ModuleMRT-TM-T1E1 T1/E1 Trunk Module (number of T1/E1 ports enabled and IMA

via software option)

MRT19-AD-48 19” MRT base unit: 48 ADSL portsMRT19-TM-OC3-2 Dual-port OC-3c Trunk ModuleMRT19-TM-DS3-2 Dual-port DS3 Trunk ModuleMRT19-TM-T1E1 T1/E1 Trunk Module (number of T1/E1 ports enabled and IMA

via software option)

19” MRT with 36 SHDSL ports available March 2003 onwards

19” Model

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ControlModule

TrunkModule

2:1 2:1= STS-3c Serial Link

(155 Mbits/sec)

= Utopia216 bits at 50 MHz

PSMLPM

LIM

DSLAM Redundancy Architecture

ControlModule

TrunkModule

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LIM Port Redundancy via PSM

PSMLPM

LIM

LPM

LIM LIM(spare)

PSM

Normal Operation

LPM

LIM LIM(spare)

PSM

Redundant Operation

Mid-plane Redundancy Path

To CLT To CLT

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Trunk Module

Control Module

Line InterfaceModule

Line ProtectionModule

Network

CPE

Trunk-to-CPE direction

• Switching• Prioritized output queuing• Explicit forward congestion indication• Early packet discard• Partial packet discard• O, A & M cell filtering and insertion• Explicit rate marking

• De-aggregation• Prioritized output queuing• Explicit forward congestion indication• Early packet discard••

Peak cell rate shaping

•Frame or cell output

CPE-to-Trunk direction

• Switching• Weighted round-robin output queuing• Explicit forward congestion indication• Early packet discard• Partial packet discard• Peak cell rate shaping• O, A & M cell filtering and insertion• Explicit rate marking

• Aggregation• Frame or cell input• Policing• Prioritized output queuing• Explicit forward congestion indication• Early packet discard

AAL5 serialization • Peak cell rate shaping

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CPE

Functional Relationship Between DSLAM Modules

Trunk ModuleSwitching & Control Module

Line Interface Module

Line Protection Module

Ripper MagicRipper

Network

12/20/2004


PowerNode

StrandStrandMountMount

PolePoleMountMount

FDI / RTFDI / RTMountMount

PedestalPedestalMountMount

Stinger FS+w/ Optical LIM

• Rural deployments• Street cabinet, Pole mounted etc..• Price / Performance Improvement• Two-fiber spans per Stinger Compact Remote

- 15 km reach• Options for remote or local powering

Stinger CR Deployment Scenarios

CellPipe® PortfolioResidential ADSL annex A

ATM CPE ATM CPE

CellPipe 20A-GXBridge/Router

(ADSL annex A)Ethernet

CellPipe 20A-USBUSB Bridge Modem

(ADSL annex A)USB 1.1

CellPipe 22A-EXBridge/Router

(ADSL annex A)4 port Ethernet switch

available NOW

CellPipe 22A-GXBridge/Router

(ADSL annex A)Ethernet and USB 1.1

CellPipe® PortfolioResidential ADSL annex B

ATM CPE ATM CPE

available NOW

CellPipe 22A-BXBridge/Router

(ADSL annex B)Ethernet and USB 1.1

CellPipe 22A-FXBridge/Router

(ADSL annex B)4 port Ethernet switch

CellPipe 20A-BXBridge/Router

(ADSL annex B)Ethernet

CellPipe 21A-BXBridge

(ADSL annex B)Ethernet

CellPipe® PortfolioBusiness

available NOW

ATM CPE ATM CPE Frame Relay CPE Frame Relay CPE

DSLPipe-HST-xx(SDSL)

CellPipe 20HBridge/Router(2-wire SHDSL)

CellPipe 20H-4Bridge/Router

(4-wire SHDSL bonding)

CellPipe 40H-CESCES Bridge/Router for

T1/E1, LAN(SHDSL)

CellPipe 55A-GXHigh End Router+ VPN Gateway with extended

Security and ISDN backup port (ADSL annex A)

CellPipe 55A-BXHigh End Router + VPN Gateway with extended

Security and ISDN backup port (ADSL annex B)

ADSL SHDSL

Thurs 21st Oct 2004 Fran Holt - Engineers · PDF fileThurs 21st Oct 2004 Fran Holt. 12/20/2004...

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