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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 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
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 • 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) • FDM Frequency Division Multiplexing • DLC Digital Loop Carrier • CAP Carrierless Amplitude Modulation • DMT Discrete Multitone • QAM Quadrature Amplitude Modulation
Other Technology Term (cont) • POTS Plain Old Telephone Service • PSTN Public Switched Telephone Network • Spiliter
Technology&Application Comparison • Technology Speed Distance Application
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 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
Central Office ADSL Products • FourtePlus • G16
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 • 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
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 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 • 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
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 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 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