1. DSL technology and deployment
VDSL2
Contributed by
Sascha Lindecke
Director of Marketing
Broadband Access

2. Today there are various DSL Technology Options
Family
ITU
Name
Ratified
Maximum Speed capabilities
ADSL
G.992.1
G.dmt
1999
7 Mbps down
800 kbps up
ADSL2
G.992.3
G.dmt.bis
2002
8 Mb/s down
1 Mbps up
ADSL2plus
G.992.5
2003
24 Mbps down
ADSL2-RE
Reach Extended
8 Mbps down
SHDSL
(updated 2003)
G.991.2
G.SHDSL
5.6 Mbps up/down
VDSL
G.993.1
Very-high-data-rate DSL
2004
55 Mbps down
15 Mbps up
VDSL2 -12 MHz long reach
G.993.2
Very-high-data-rate DSL 2
2005
30 Mbps up
VDSL MHz
Short reach
100 Mbps up/down

3. Existing High Speed Technologies Do Not Solve the Problem of Bottlenecks
100
Data rate
[Mbit/s]
Design only for short loop applications (MDU/MTU) 60
Real bit-rates are too low for multiple (3) HDTV channels
VDSL 20
Low bit-rates are insufficient for Triple-Play applications
ADSL2+ 8 2
SHDSL
1 km
2 km
3 km
4 km
5 km
Line Length
VDSL2 = VDSL Speeds with ADSL/2+ Reach and Flexibility

4. VDSL2 Standardization VDSL2 standardization started in January 2004
Main technology development in ITU-T
North American system requirements in ANSI/NIPNAI
European system requirements in ETSI
Reached consent in May 2005 (Geneva Meeting)

5. VDSL-2 Key Features DMT modulation Worldwide Versatile Standard
Same as ADSL
Bandwidth increased from 12 MHz to 30 MHz
Up to 4096 tones (8x ADSL2+ !)
Worldwide Versatile Standard
8 profiles defined for different services
Different bandplans for the regions
Variety of PSDs to optimize spectral compatibility
Support for a variety of services
Integrated Quality of Service features
ATM as well as Ethernet payload
Channel bonding for extended reach or rate

6. VDSL2 – The DSL convergence technology
ADSL2+
Coding
Framing
Long Reach
Upstream 0 1
VDSL
Bandplans
Short Loops 2 3 4
EFM
TC-Layer
Bonding
OaM
QoS
New Features
100/100 Mbps
30MHz
QoS

7. VDSL2 - All The Benefits of ADSL/2+, Higher Speeds Than VDSL1
Criteria
VDSL2 Benefits
Bandwidth
Much higher performance for short loops
Trellis, SRA,
GCI
Improved performance
Long Reach
90% customer reach + single technology
ADSL
Compatibility
Reuse of existing ADSL infrastructure
Quality – Of –Service
Enable Triple – Play applications
VDSL1
12MHz
VDSL2
30MHz
VDSL1
None
VDSL2
Mandatory
VDSL1
1km
3km …
VDSL2
VDSL1
None
VDSL2
ADSL, ADSL2, ADSL2+
VDSL1
None
Dual Latency, Dual Bearer,
Pre-Emption
VDSL2

8. VDSL2 Performance Symmetrical 100Mbit/s due to 30MHz bandwidth
250
Symmetrical 100Mbit/s due to 30MHz bandwidth
DS ADSL2+ (2.2 MHz)
DS VDSL1 (12 MHz)
200
DS VDSL2 (30MHz)
AWGN/-140dBm/Hz/ANSI-TP1
150
Improved mid range performance through Trellis/Viterbi coding and Generic Convolutional Interleaver
Rate / MBit/s
100
ADSL-like long reach performance due to Trellis coding and Echo Cancellation 50
Reach / m
500
1000
1500
2000
2500
3000
3500
Reach / ft*
1600
3300
4900
6600
8200
9900
11,500
* Numbers are rounded

9. VDSL-2 Standard – Profiles
Tx Power
20.5 dBm
ADSL
ADSL2+
VDSL2 8b
17.5 dBm
VDSL2 8a
No US0
w/ US0
14.5 dBm
VDSL2 8d
VDSL2
12a,b
VDSL2
17a
VDSL2
30a
11.5 dBm
VDSL2 8c
Analog Bandwidth
1.1
2.2
8.8
12.0
17.6
MHz
30.0
256
512
2048
2782
4096
# of Tones
3478
DSP Power
4 kBaud
8 kBaud

10. Bandplans, Annexes, PSDs
2.2 US
ADSL2+ DS
Annex A: ADL
Annex A: POTS
Annex B: 997 A
Annex B: 997 M
Annex B: 997 B
Annex B: 998 A
Annex B: 998 M
Annex B: 998 B
Annex B: 998 0
Annex C
China 25
138
276
640
3.0
3.75
5.1
5.2
5.8
7.05
8.5
12.0
18.1

11. ADSL2+ Backwards Compatibility
Modem
DSLAM
Phase 1:
large installed
base – ADSL/2+
Phase 2:
DSLAM upgrade
CPEs can
"stay as they are"
VDSL2
Phase 3:
selective upgrade
of CPEs
dependent on
selected service
ADSL2+ backwards compatibility will make VDSL2 deployment scenario much more attractive for the Carriers and will speed up the technology adoption.
VDSL2 Line Card
ADSL2+ Line Card

12. Market Trends – Deployment By Region
Europe
Triple-Play with at least 3 DTV channels + 5Mbps surfing + VoIP
30Mbps downstream, 3Mbps upstream
VDSL2 compliant
ADSL backwards compatible
20.5dBm transmit power
Fits into existing ATM infrastructure
ADSL-like long reach performance
Main-land China
Triple-Play with at least 3 DTV channels + 5Mbps surfing + VoIP
30Mbps downstream, 3Mbps upstream
VDSL2 compliant
ADSL backwards compatible
20.5dBm transmit power
Fits into existing ATM infrastructure
ADSL-like long reach performance
USA, Canada
Triple-Play with at least 3 HDTV channels + 5Mbps surfing + VoIP
30Mbps downstream, 3Mbps upstream
VDSL2 compliant
ADSL backwards compatible
17.5dBm transmit power
ADSL-like long reach performance
Japan, Korea, Taiwan
Upgrade of existing 70Mbps services to 100Mbps symmetrical
100Mbps downstream, 100Mbps upstream
VDSL2 compliant
ADSL backwards compatible
14.5/20.5dBm transmit power
ADSL-like long reach performance

13. VDSL-2 Standard – Regional Requirements
Tx Power
20.5 dBm US
12 MHz
20 dBm
2-4k tones
ADSL
North
America EU
ADSL2+
VDSL2 8b EU
17 MHz
20.5 dBm
4k tones
APAC
4k tones
14.5 dBm
30 MHz
17.5 dBm
VDSL2 8a
No US0
w/ US0
14.5 dBm
VDSL2 8d
VDSL2
12a,b
VDSL2
17a
VDSL2
30a
11.5 dBm
VDSL2 8c
Analog Bandwidth
1.1
2.2
8.8
12.0
17.6
MHz
30.0
256
512
2048
2782
4096
# of Tones
3478
DSP Power
4 kBaud
8 kBaud

14. Market Trends – Revenue Forecast Worldwide
Total VDSL and VDSL2 IC port and revenue forecast
11/04
VDSL2 volume shipments
VDSL shows 90% growth over the course of the next 3 years
VDSL is becoming a dominate technology in APAC/Japan

15. DSL-Forum‘s mission for VDSL-2
Deployability
Integration of VDSL-2 in the network
Adaptation for existing TRs
Enhancement of ITU standards
Interoperability
Creating a test plan
Working with the interoperability test labs
Considering operator requirements

16. DSL Forum contribution to VDSL-2
WT-114: VDSL-2 Performance Test Plan
Setting performance targets for VDSL-2
Considering different regions and profiles
WT-115: VDSL2 Functionality Test Plan
Test plan for functional compliance to the VDSL-2 standard
Enables operators to perform homologation of equipment
WT-129: Protocol Independent Object Model For Managing VDSL2
Based on ITU G.997.1
Adopting new objects from G.vdsl2
PD-139: Interoperability test plan for VDSL-2
Enables efficient interoperability testing
First plugfest planned for January 2006

17. Conclusion VDSL-2 is the ultimate DSL standard
Natural evolution of ADSL2+
Best exploitation of Copper Plants
Sufficient bandwidth for the years to come
VDSL-2 is ramping up quickly
Significant tenders in all parts of the world
First chipsets and systems available
Driven by Video over Broadband
DSL-Forum is paving the way for a fast adoption of VDSL-2
Leveraging the experience and specifications for ADSL-2
Assures interoperability and standard compliance
Enables mass deployment by seamless provisioning