VDSL Performance & Tuning

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904 posts

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#970372 21-Jan-2014 01:04

Shouldn't be, but it is. Central splitter + dedicated cat5 to the modem installed by Chorus.

hio77

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Lizard Networks

#970373 21-Jan-2014 01:05

Lorenceo: Shouldn't be, but it is. Central splitter + dedicated cat5 to the modem installed by Chorus.

odd. my attention used to shift around too.. took about 4 weeks of moaning at chorus to get it fixed..

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insane

3236 posts

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#970374 21-Jan-2014 01:09

Well after a year of being pegged on 8b DLM1, BOOM!

70/10, oh yeah!

============================================================================
VDSL Training Status: Showtime
VDSL Profile: Profile 17a
Traffic Type: PTM Mode
Link Uptime: 0 day: 20 hours: 55 minutes
============================================================================
VDSL Port Details Upstream Downstream
Line Rate: 10.426 Mbps 70.094 Mbps
Actual Net Data Rate: 10.342 Mbps 69.993 Mbps
Trellis Coding: ON ON
SNR Margin: 17.0 dB 14.9 dB
Actual Delay: 0 ms 0 ms
Transmit Power: -11.7 dBm 14.3 dBm
Receive Power: 1.1 dBm 9.3 dBm
Actual INP: 0.0 symbols 0.0 symbols
Total Attenuation: 0.2 dB 4.9 dB
Attainable Net Data Rate: 19.768 Mbps 86.280 Mbps
============================================================================
VDSL Band Status U0 U1 U2 U3 D1 D2 D3
Line Attenuation(dB): N/A 7.4 19.8 N/A 4.3 9.3 - 3.9
Signal Attenuation(dB): N/A 7.2 18.3 N/A 4.3 9.3 N/A
SNR Margin(dB): N/A 17.1 17.0 N/A 14.3 15.5 N/A
Transmit Power(dBm): N/A -24.0 -12.0 N/A 13.3 7.6 N/A
============================================================================

hio77

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Lizard Networks

#970375 21-Jan-2014 01:14

what an insane sync rate too, not really gonna get any closer to 70/10 with that!

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insane

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#970376 21-Jan-2014 01:22

hio77: what an insane sync rate too, not really gonna get any closer to 70/10 with that!

Somewhat ironic as I'll be getting a 'test' UFB connection put in shortly. Cabinet is at the end of my driveway, think I should log a ticket asking them to find my missing 0.007mbps sync rate :p

Eskem0

13 posts

Geek

#971802 21-Jan-2014 18:44

Hi guys! Just a quick question. Got VDSL installed not to long ago, waited for the 10 day period.
Playing around with it now.. If I remove the master splitter and just hard wire into the modem I get a attenuation of 9db. with the filter its 11db.

I don't have any phones to install. So should I just keep it hardwired ? I know the filter will "clean up" the line but the SNR and sync rate stays the same just attenuation is effected.

hio77

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Lizard Networks

#971816 21-Jan-2014 18:48

sounds like a defected filter.

a clean cat5 from the ETP to the single socket will certainly count out any harm of a defective part or inflictions from other jackpoints.

lack of a filter will not do any harm. chorus like to know its there to be able to say yes the line should be perfect persay.

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Damager

2125 posts

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#972479 22-Jan-2014 20:51

hio77: yes, it is. the underuse of the upload spectrum is a topic thats been bought up here a few times..

moreso with 17a, since it adds two upload bands.

Interesting! What's the highest possible attainable upload speed?

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Lorenceo

904 posts

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#972503 22-Jan-2014 22:10

100mb down and 50 up on 17a, but Chorus have artificially limited it to a max of 70mb down and 10 up.

hio77

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Lizard Networks

#972504 22-Jan-2014 22:11

Damager:
hio77: yes, it is. the underuse of the upload spectrum is a topic thats been bought up here a few times..

moreso with 17a, since it adds two upload bands.

Interesting! What's the highest possible attainable upload speed?

10mbit. 10360Kbit to be exact.

take a look at your Max. DSLAM throughput values if your modem shows them.

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HiTM4N

256 posts

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#972696 23-Jan-2014 11:00

Been a while so thought i'd post an update...

Made a few changes, swapped to a telecom business router (dont ask why i have it) and also installed a brand new ETP with filter and Cat5 to jack.

Love of all phones, computers and gadgets

SamF

1578 posts

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#972792 23-Jan-2014 12:33

Are you getting a 42mbit downstream sync with an attenuation of 21dB!!??

What is your DLM profile currently?

HiTM4N

256 posts

Ultimate Geek

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#972957 23-Jan-2014 16:15

SamF: Are you getting a 42mbit downstream sync with an attenuation of 21dB!!??

What is your DLM profile currently?

DLM3

Love of all phones, computers and gadgets

Downhillnz

62 posts

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#972962 23-Jan-2014 16:21

HiTM4N: Been a while so thought i'd post an update...

Made a few changes, swapped to a telecom business router (dont ask why i have it) and also installed a brand new ETP with filter and Cat5 to jack.

Cos I fixed that sheeet

hio77

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Lizard Networks

#972964 23-Jan-2014 16:22

Downhillnz:
Cos I fixed that sheeet

huh?

#include <std_disclaimer>

Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.

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