VDSL Performance & Tuning

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#1644773 3-Oct-2016 15:27

I transferred to VDSL from ADSL but somehow my Attenuation has gone up from (7,1 to 11,20).I was previously connected to a Broadcom DSLAM and not an Ikanos one.Did I get ported to a different DSLAM?

Jase2985

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#1644783 3-Oct-2016 15:56

unless you were on UCLL gear then chances are you are on the same cabinet. Maybe on a different card in the cabinet though.

Your attenuation does go up with VDSL as its measured at a different frequency

what was your speed on ADSL? and do you have a master filter installed?

hio77

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#1644814 3-Oct-2016 17:00

Downstream attenuation, within ballpark of what i would expect.

Reasonable line, Master filter installed? it does look like it could be cleaned up a little.

Is possible you moved linecards if the one you were physically one was not capable of providing VDSL.

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mAYH3M

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#1644836 3-Oct-2016 18:18

Jase2985:

unless you were on UCLL gear then chances are you are on the same cabinet. Maybe on a different card in the cabinet though.

Your attenuation does go up with VDSL as its measured at a different frequency

what was your speed on ADSL? and do you have a master filter installed?

hio77:

Downstream attenuation, within ballpark of what i would expect.

Reasonable line, Master filter installed? it does look like it could be cleaned up a little.

Is possible you moved linecards if the one you were physically one was not capable of providing VDSL.

Not sure about the master filter as I'm renting this place.But I do get DSL on all phone jacks in the house so I'm thinking there is none.

Speed on ADSL was around 19 Mbps and straight line distance to the cabinet is nearly 300m.

Jase2985

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#1644905 3-Oct-2016 20:05

if you get DSL on all jacks you dont have a master filter. It may make a small difference but given your speeds i wouldnt bother.

hio77

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#1644941 3-Oct-2016 21:31

Jase2985:

It may make a small difference but given your speeds i wouldnt bother.

i would disagree, there is a fair amount that can be cleaned up on that line.

remember 8b does not cap out at 50mbit anymore, also for the line the upstream particularly is a little ill.

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mAYH3M

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#1644944 3-Oct-2016 21:54

Looks like there is quite some variation on different phone jacks.Any chances of it getting better in the coming weeks?

mAYH3M:

hio77

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#1644945 3-Oct-2016 21:57

mAYH3M:

Looks like there is quite some variation on different phone jacks.Any chances of it getting better in the coming weeks?

Clear signs of an unclean line, as i stated before.

going around trying each jackpoint will lead DLM to get upset and make things worse not better.

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Jase2985

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#1644993 4-Oct-2016 05:04

hio77:

Jase2985:

It may make a small difference but given your speeds i wouldnt bother.

i would disagree, there is a fair amount that can be cleaned up on that line.

remember 8b does not cap out at 50mbit anymore, also for the line the upstream particularly is a little ill.

only reason i say that is they are renting and its may not be worth the time/cost also

mentalinc

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#1645005 4-Oct-2016 07:31

A new filter costs like $20 and takes less then 30 mins to install.

Well worth the time and small cost for improved DSL. and given it's so cheap you'll do every renter after you a favour..

Unless fiber is only a few months away....

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hio77

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#1645297 4-Oct-2016 16:41

Jase2985:

hio77:

Jase2985:

It may make a small difference but given your speeds i wouldnt bother.

i would disagree, there is a fair amount that can be cleaned up on that line.

remember 8b does not cap out at 50mbit anymore, also for the line the upstream particularly is a little ill.

only reason i say that is they are renting and its may not be worth the time/cost also

When i was out renting, i made it a condition of signing my lease that a filter could be installed. they gave it the all ok to go ahead, simply required it was done by Chorus themselves (remember the ordeal that was in this thread? haha)

IMO its well worth the cost, but anyway..

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Jase2985

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#1645303 4-Oct-2016 16:55

mentalinc:

A new filter costs like $20 and takes less then 30 mins to install.

Well worth the time and small cost for improved DSL. and given it's so cheap you'll do every renter after you a favour..

Unless fiber is only a few months away....

if you know what you are doing :)

mAYH3M

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#1645320 4-Oct-2016 17:04

I think the house will also need a straight run from the splitter to the modem.Fibre will be installed next month and 50 Mbps down will do for now.

mAYH3M

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#1650032 12-Oct-2016 23:39

Connected the modem to an ADSL Filter and the rate increased from 47 Mbps to 55 Mbps and latency dropped by 1 ms.Does the resistance on the Phone line help in eliminating noise from the line ?

hio77

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#1650034 13-Oct-2016 00:03

mAYH3M:

Connected the modem to an ADSL Filter and the rate increased from 47 Mbps to 55 Mbps and latency dropped by 1 ms.Does the resistance on the Phone line help in eliminating noise from the line ?

ild put it down to DLM.

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