ADSL2+ capability roll-out update · BMT Belmont 1k 18/06/2007 18/06/2007 26/06/2007 25/06/2007 ......

ADSL2+ capabilityroll-out update

Tim Pegler

Portfolio Manager – Mass Broadband

Telecom Wholesale consultation programme - Ethernet 6 September 2007

ADSL2+ roll-out progress

� 373 out of 741: ISAMs installed

� 31 out of 113: exchanges with end-users migrated to ISAMs

� 17 exchanges: ADSL2+ enabled for all end users

� 11 exchanges: ADSL2+ activation scheduled for Sept 14

� 30,000 out of 380,000: end-users on ADSL2+

The ADSL2+ roll-out aims to upgrade 115 exchanges in five cities.

Progress to date:


ADSL2+ roll-out progress (continued)

� Average 2,000 migrations/day

� Migration outages reduced from 10 to 1-2 minutes

� Progressive cabinet replacement within the five cities is still in plan

� Working roll-out schedule available by email or website. It includes;

� List of exchanges

� End user migration from ASAM to ISAM

� Activation of ADSL2+ for new connections

� Exchange fully migrated to ADSL2+


Roll-out risks

� Late delivery of equipment (24-days from agreed date)

� Performance & scheduled outages - scheduled outages require at least

two days of downtime

� Migration cancellation due to network outages

� Adverse weather conditions

� Resource constraints due to staff health & safety


www.telecomwholesale.co.nz/adsl2plus

Key:

This schedule has been updated as of: 28-08-2007 Completed

Scheduled

Estimated

Exchang

e code

Exchange

name

BB

Connections

(2) New

Connectio

ns

ADSL2+

Enabled

(3)

Exchange

Fully

Migrated to

ADSL2+

Approx volume Nil

Re-

authenticate

or reset

modem

Start date End datePlanned

date

STL St Albans 3k 3/04/2007 3/04/2007 13/04/2007 10/04/2007

PGA Pakuranga 4k 10/05/2007 10/05/2007 17/05/2007 17/05/2007

KNH Khandallah 2k 25/05/2007 25/05/2007 1/06/2007 1/06/2007

BMT Belmont 1k 18/06/2007 18/06/2007 26/06/2007 25/06/2007

WTB Whitby 1k 22/06/2007 22/06/2007 29/06/2007 29/06/2007

SV Stokes Valley 1k 10/07/2007 10/07/2007 9/08/2007 16/08/2007

BYM Brymer 1k 10/07/2007 10/07/2007 9/08/2007 16/08/2007

MWN Mt Wellington .5k 13/07/2007 13/07/2007 9/08/2007 16/08/2007

MPL Mt Pleasant 2k 19/07/2007 19/07/2007 17/08/2007 23/08/2007

MMA Memorial Ave 3k 25/07/2007 25/07/2007 9/08/2007 16/08/2007

KIL Kilbirnie 1k 27/07/2007 27/07/2007 9/08/2007 16/08/2007

KLB Kelburn 1k 30/07/2007 30/07/2007 9/08/2007 16/08/2007

Impact: 1-2 min outage, re-

authenticate or reset

ADSL2+ Roll out schedule

EXCHANGE DETAILS ROLL OUT ACTIVITY

(1) ADSL1 customer

migration to ISAMs


Customer experience

Actual end-user speeds measured at first three ADSL2+ exchanges

0

5

10

15

20

25

30

35

40

45

50

55

60

0 2 4 6 8 10 12 14 16 18 20

Download speed (Mb/s)

Attenuation @ 160kHz

Model base

ADSL2+ no multiples

ADSL2+ w ith multiples

Linear (ADSL2+ w ith multiples)

Linear (ADSL2+ no multiples)

0

5

10

15

20

25

30

35

40

45

50

55

60

0 2 4 6 8 10 12 14 16 18 20

Download speed (Mb/s)

Attenuation @ 160kHz

Model base

ADSL2+ no multiples

ADSL2+ w ith multiples

Linear (ADSL2+ w ith multiples)

Linear (ADSL2+ no multiples)

Modem

performance

limits speed

to 7.547

Mbit/s


Modem issue: current status

� Original tests showed speed limits with

modem/firmware with interleaving on

� All ADSL1 and early version ADSL2+ modems

may be affected

� Widespread end-user impact due to high

penetration of D-link modems

� Following successful testing, future D-Link

modems will have new firmware

� Other modem issues may be resolved by:

� Modem or firmware upgrade

� Switch interleaving off

Tested and found to belimiting to 7.547M

D-link DSL-604TV3.00B01T01.TX.20060516

D-link DSL-502TV3.00B01T01.TX.20060517

D-link DSL-504T (vI)V3.00B01T01.TX.20060117

Tested and found to belimiting to 7.547M

D-link DSL-604TV3.00B01T01.TX.20060516

D-link DSL-502TV3.00B01T01.TX.20060517

D-link DSL-504T (vI)V3.00B01T01.TX.20060117


Modem issue: the path forward

� Using the ADSL2+ exchange line data and the network analyser tool

we can:

� Identify end-users speed limited by modem issues

� Predict possible obtainable speeds if issues are resolved (based on known

line factors)

� This information can be provided following ADSL2+ migration

� May help identify end-users likely to experience increased speeds with

upgraded modem/firmware or interleaving off


Modem testing results – shortly available on Safecom

Modem / Firmware Version

at 1 km

Dlink DSL-502T

(V3.00B01T01.

TX.20060517 )

Dlink DSL-504T

(Gen I)

(V3.00B01T01.T

X.20060117 )

Dlink DSL-504T

(Gen II)

(V3.02B01T01.

TXC.20061115)

Dlink DSL-504T

(Gen II)

(V3.00B01T01.T

XC.20070216 )

Dlink DSL-604T

(V3.00B01T01.

TX.20060516 )

XTUC Loop Atten Up (dB's) 28.8 28.6 28.5 28.9 28.6

XTUC Signal Atten Up (dB's) 32.1 32.2 32.3 31.9 32.1

XTUC Noise Margin Up (dB) 12 0.1 11.8 11.8 11.9

XTUC Output Power Down (dBm) 17.1 17.4 18.8 17.8 17.4

XTUC Actual PSD Down (dBm/Hz) -44.9 -44.6 -43.2 -44.3 -44.6

XTUR Loop Atten Down (dB's) 28.9 28.2 29.7 29.4 28.2

XTUR Signal Atten Down (dB's) 28.9 28.2 30.2 29.9 28.2

XTUR Noise Margin Down (dB) 25.5 21.5 25 12 22

XTUR Output Power Up (dBm) 12.2 12.3 12.2 12.2 12.2

XTUR Actual PSD Up (dBm/Hz) -38.1 -38 -38.1 -38.1 -38.1

XTUC Bit rate up 590 583 590 583 593

XTUC Max Attainable bit rate up 590 579 590 583 593

XTUR Bit rate down 7547 7547 7547 13521 7547

XTUR Max Attainable bit rate down 15524 16012 16432 16268 15296

Iperf Upstream (kbit/s) 386 384 388 403 390

Iperf Downstream (kbit/s) 6341 6341 6341 11367 6342

Average Sync time <30s <30s over 30s <30s over 30s

Notes ADSL2+ Annex A ADSL2+ Annex A ADSL2+ Annex A ADSL2+ Annex A ADSL2+ Annex A

REVISED FIRMWARE


Next steps: End-user broadband performance

� Objective: Identify key factors impacting end-user broadband

performance

� Analysis of 300 broadband households of Memorial Ave and Mt

Pleasant

� Testing on splitter, copper, installation, DSLAM cable, modem

settings, etc

� Cabling or similar issues will be rectified as discovered

� October – December 2007

� Report on the impact and importance of each component tested will

be available


Proposed: CPE testing facility

� Purpose: to allow on-demand performance testing of new CPE

proposed to be connected to the Telecom network

� Will operate outside Telepermit process – rather than test for

compliance, it will allow scenario based tests and deliver performance

data

� We are looking for customer feedback on this proposal

� Investigation stage


New service: Basic UBA

� Basic UBA – best efforts broadband that will progressively replace UBS

� Variants may include:

� UBS-like or L2TP as per Commerce Commissions STD – confirmed delivery

in September 2007

� Layer 2 Ethernet / ISAM – proposed delivery by July 2008

� ASAM only ATM version – under discussion for early 2009

� Multiple architectures will give you delivery options while end-user

experience across the tail will be the same


New service: Enhanced UBA

� First next generation broadband offerings

� Built over ADSL2+/ISAM/Ethernet footprint only

� Intended release July 2008

� Service specification is part of on-going STD

� Delivers real time traffic via best efforts broadband connection

� Initially with 40Kbps and 90Kbps options

� ADSL2+ roll out with give 80% coverage in Zone 1, increasing to 100%

with cabinet replacement


Designing: Multi-class tail design

� Next generation broadband designed as multi-class tail

� Enhanced UBA is only the first variant. Others may include higher

real-time bandwidth, real-time only and interactive

In plan

Future NONOYESNONORT-UBA 40K

YESNONONONORT-UBA ? K

NOYESNONONORT-UBA 90K

I-UBA

Basic-UBA

E-UBA ?K

E-UBA 90K

E-UBA 40K

Variants

YESNONONOYES

?

NO

NO

YES

40K

Real Time Voice Class

NONONOYES

??YESNO

NOYESNOYES

NONONOYES

? K90K

Best Efforts Interactive

Internet Class Class

NONOYESNONORT-UBA 40K

YESNONONONORT-UBA ? K

NOYESNONONORT-UBA 90K

I-UBA

Basic-UBA

E-UBA ?K

E-UBA 90K

E-UBA 40K

Variants

YESNONONOYES

?

NO

NO

YES

40K

Real Time Voice Class

NONONOYES

??YESNO

NOYESNOYES

NONONOYES

? K90K

Best Efforts Interactive

Internet Class Class


Investigating: Increased local aggregate bandwidth for E-UBA

� Looking at increasing LAP bandwidth for Enhanced UBA

� ADSL2+ improves the speed between end-user and DLAM, and we want

to open discussion on increasing capacity from DSLAM to Ethernet

switch

Modem ISAM EAS

LAPADSL2+

32kbps->?kbps SP

Pros:

� Potential area of

congestion removed

� Improved end-user

experience in some cases

Cons:

� Increased number of GigE

handovers required

� Increased international

bandwidth demands

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ADSL2+ capability roll-out update · BMT Belmont 1k 18/06/2007 18/06/2007 26/06/2007 25/06/2007 ......

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