Layer 10's Paul Brooks at NBN: Rebooted

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Layer 10's Paul Brooks at NBN: Rebooted

Layer 10's Paul Brooks at NBN: Rebooted

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  • 1. Several VDSL2 Bandplans • G.993.2 02/2006: • Annex A (US): 7 plans with 9 variations • Annex B (Euro): 6 x ‘997’ plans and 7 x ‘998’ plans up to 12 MHz • Annex C (Japan): 1 band plan over ISDN, up to 30 MHz • Annexes D, E, F, G, H, I, J, K all “for further study” But wait…there’s more… 1
  • 2. Several Bandplans…(2) • G.993.2 v2.0 (12/2011) • Annex A (US): 8 downstream x 11 upstream (some not compatible with each other) = ~80 plan variations, with max at 8/12/17/30 MHz Exercise: Pick One (1) only bandplan for use Australia • Annex B (Euro): 8 x ‘997’ plans throughout and 17 x ‘998’ downstream plans up to 8/12/17/30 MHz • Annex C (Japan): 4 minor band plan variants, up to 30 MHz 2
  • 3. Communications Alliance CA WG45 “VDSL2 & Vectoring” meeting now… continuing work started in 2007 •Asymmetric Plan – B8-11, up to 17 MHz • @400m: 100 Mbps down, 39 Mbps up •Symmetric(ish) Plan – B7-9, up to 17 MHz • @400m: 65 Mbpsdo we want forup What down, 55 Mbps Australia: Symmetric or Asymmetric? 3
  • 4. Skin Effect & Corrosion High frequency signals travel in a thin channel near the surface of a wire • At 15 MHz, “Skin Effect” Depth is just 17 microns ….first zone to be corroded away November 2012 In-Home Installations - NBN Realised 4