Open Forum 2016 10th November 2016

NICC DSL Task Group – A year in review NICC DSL TG NICC DSL Task Group – A year in review Kevin Foster CEng. FIET NICC DSL Task Group Chairman 10 November 2016

Outline NICC DSL Task Group scope Work Plan and progress Who participates and how we work Key work and publications in 2016 Outlook for 2017 Summary

DSL TG scope Radial distribution Exchange manhole MDF PCP SCP Underground cable E-Side D-Side DP Overhead Specifications and guidelines relating to the use of Digital Subscriber Line technology in the unbundled UK metallic access network BT KCOM Key documents are the UK Access Network Frequency Plans and Metallic Path Facility specifications and guidelines

NICC consensus approval Progress and plan Work Item # Description Target ND Status 318/1 BT ANFP (change to enable G.fast) ND1602 Published March 2016 318/2 BT ANFP guidelines ND1405 Published July 2016 321 Overlapping spectrum study and change to BT ANFP and BT ANFP Guidelines Study report ND1520 and then uplift ND1602 and ND1405 Study work ongoing to look at technical options for VDSL2 and G.fast 1st stable draft TG approval NICC consensus approval Publication

Recent publications Updated to enable latest G.fast DSL technology from the ITU-T Enables ultrafast speeds Up to 1Gbit/s on short loops 150-300Mbit/s on longer loops Two new parts added to ANFP Part E Part F

ANFP change summary G.fast is defined in ITU-T Rec. G.9700 (PSD) and G.9701 (transmission system) Time Division Duplex (TDD) based transmission system, using the spectrum between 2 and 106MHz, delivering up to 1Gbit/s aggregate on phone wires. Support of vectoring (real time crosstalk cancellation) and retransmission are mandatory in both upstream and downstream directions. Two new ANFP parts (E & F) have been added to ND1602 (ANFP) to enable G.fast Enables G.fast to use spectrum between 19 and 106 MHz in BT’s network Spectrum compatibility with existing VDSL2 systems which use up to 17.664MHz Part E provides the limits applicable to FAST DSLAMs deployed either at alongside existing Part B (VDSL2) locations or closer to the customer premise than the existing Part B location. Part F provides the limits applicable to FAST modems and can only be used when communicating with a DSLAM operating under Part E. U1 0.138 3.75 5.2 8.5 12 14 17.664 D2 D3 U2 D1 f (MHz) U0 0.025 TDD 19 106 VDSL (998ADE17) G.fast

Recent publications Updated to enable latest G.fast DSL technology from the ITU-T Provides guidance explanation for the BT ANFP (ND1602)

Meetings The DSL TG is very active Meetings are held approximately monthly 10 meetings in the last year 4 Face to face meetings hosted by a NICC member 6 Teleconferences http://members.niccstandards.org/DSL/default.aspx

Members currently participating Operators/CPs Equipment/chip vendor Other organisations Sky Adtran Ofcom Talk-Talk Nokia/ALU BT Group (inc. Openreach) ASSIA KCOM ECI Vodafone Huawei Intel (Lantiq)

NICC DSL TG members area

Outlook for 2017 Complete the technical study into options for overlapping VDSL2 and G.fast spectra Update the BT ANFP & guidelines to support G.fast spectrum starting below 19MHz

Summary Another busy year for the NICC DSL Task Group Supported by active engagement from key industry stakeholders Communication Providers Vendors Ofcom 2 key deliverables completed enabling the latest DSL from the ITU-T (G.fast) Ground breaking work ongoing enabling co-existence of G.fast and VDSL2 in the region up to 17.6MHz which will lead to update to BT ANFP and guidelines New members welcome

Thank You