14 March 2002 SG 15 activity on Broadband Delivery and In-Home Networking Andrew Nunn (BT, UK) Chairman ITU-T WP1/15

14 March 2002 Contents n n Introduction n n Questions under study n n Typical Access Network construction n n Optical Access Networks n n Digital Subscriber Loop (xDSL) & Home Phoneline Networking n n Current/future work n n Other SDOs/Bodies n n Summary

14 March 2002 Questions Under Study n n Q.2/15 - Optical systems for access networks Rapporteur: Dave Faulkner (BT, UK) n n Q.3/15 - Support for Recommendations Specifying Systems Based on ISDN Physical Layers Lead Study Group Rapporteur: Koji Kikushima (NTT, Japan) n n Q.4/15 - Transceivers for customer access and in-premises phone line networking systems on metallic pairs Rapporteur: Dick Stuart (Aware, USA)

14 March 2002 Typical Access Network Construction Central Office (Exchange) Feeder Network Street Cabinet Distribution Network Overhead Feed Underground Feed Customer

14 March 2002 Q.2/15 - Optical systems for access networks Recommendations n n G Amendment 1 - High speed optical access systems based on Passive Optical Network (PON) techniques n n G ONT Management and Control Interface specification for ATM PON

14 March 2002 Q.2/15 - Optical systems for access networks Recommendations (continued) n n G A broadband optical access system with increased service capability by wavelength allocation n n G A broadband optical access system with increased service capability using Dynamic Bandwidth Assignment

14 March 2002 Q.2/15 - Optical systems for access networks Recommendations (continued) n n G A broadband optical access system with enhanced survivability n n G ONT Management and Control Interface specification for Dynamic Bandwidth Assignment

Access Fibre Deployment Scenarios FTTBasement Local Exchange Street Cabinet DP Customer FTTCabinet FTTKerb FTTHome FibreCopper Optical Splitter

14 March 2002 G Amendment 1 - High speed optical access systems based on Passive Optical Network (PON) techniques n n ATM-PON n n / Mbit/s, / Mbit/s or / Mbit/s downstream/upstream n n Single or two fibre working n n Maximum range of at least 20 Km

14 March 2002 G A broadband optical access system with increased service capability by wavelength allocation n n Defines new wavelength allocations to distribute ATM-PON signals and additional service signals simultaneously n n Allows distribution of video broadcast services or data services without disturbing basic ATM-PON system

14 March 2002 Q.4/15 - Transceivers for customer access and in-premises phone line networking systems on metallic pairs Recommendations n n G High bit-rate Digital Subscriber Line (HDSL) n n G Single-pair High-speed DSL (SHDSL) n n G Asymmetrical DSL (ADSL) n n G ‘Splitterless’ or ‘lite’ ADSL

14 March 2002 Q.4/15 - Transceivers for customer access and in-premises phone line networking systems on metallic pairs Recommendations (continued) n n G Very high bit rate DSL (VDSL) – Foundation n n G DSL Handshaking procedures n n G Overview of DSL Recommendations

14 March 2002 Q.4/15 - Transceivers for customer access and in-premises phone line networking systems on metallic pairs Recommendations (continued) n n G DSL Testing procedures n n G DSL Physical Layer management n n G Phone-line Networking - Foundation n n G Phone-line Networking - Payload format and Link Layer requirements

xDSL Deployment Scenarios Local Exchange Street Cabinet DP Customer ADSL VDSL FibreCopper

14 March 2002 G Asymmetric Digital Subscriber Line transceivers n n One twisted pair n n Payload upstream up to 640 kbit/s n n Downstream up to Mbit/s n n Simultaneous Voiceband and N-ISDN possible n n Line Code - DMT (Discrete MultiTone)

14 March 2002 G Very high bit-rate Digital Subscriber Line transceivers n n One twisted pair n n Asymmetric and symmetric data rates up to tens of Mbit/s n n Frequency Division Duplexing to separate upstream & downstream traffic n n Three band plans defined occupying 138kHz up to 12 MHz

14 March 2002 G.989.1/G – Home Phoneline Networking Transceivers n n In-premises distribution of data over existing phoneline wiring n n Nominal effective throughput equal to 10BASE-T Ethernet n n Compatibility with other phoneline services such as POTS, V.90/V.92, ISDN and G n n Spectrum notching for compatibility with Amateur Radio services

14 March 2002 Q.2/15 - Optical systems for access networks Current/future work n n Enhancement of G to support survivability (G.983.5) and new services n n Enhancement of G to include Mbit/s upstream rate n n Gigabit PON ( Gbit/s ?)

14 March 2002 Q.4/15 - Transceivers for customer access and in- premises phone line networking systems on metallic pairs Current/future work n n Revision of Single-pair High-speed DSL (SHDSL) - G n n Second Generation ADSL n n Second Generation‘Splitterless’ ADSL

14 March 2002 Q.4/15 - Transceivers for customer access and in- premises phone line networking systems on metallic pairs Current/future work (continued) n n Very high bit rate DSL (VDSL) – G.vdsl.l n n Phone-line Networking - Isolation Filter – G.pnt.if n n Voice over DSL n n Bonding of DSL systems n n Power Line Transmission (in-premises only)?

14 March 2002 Other SDOs/Bodies n n FSAN n n ETSI/TM6 n n T1E1.4 n n DSL Forum n n IEEE ah EFM n n TR30

14 March 2002 Summary n n ITU-T SG 15 has produced a comprehensive set of broadband access network standards for both copper and fibre media n n B-PONs either alone of in conjunction with VDSL provide a basis for the implementation of a full service access network n n On-going activities are focussing on higher bitrates and transport of packet/Ethernet traffic