DLM changes - edge of VDSL coverage

Forums › New Zealand Broadband › DLM changes - edge of VDSL coverage - speed improvement?

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wratterus

1687 posts

Uber Geek

#1804825 21-Jun-2017 19:56

Well I decided to give VDSL another go - as suspected it doesn't seem to have improved at all. After having a bit of fun getting the Edgerouter to authenticate (turns out I had to first create a virtual interface over the correct Eth interface with VLAN10, then setup the pppoe interface over that.

Screenshots here of line stats on ADSL

and VDSL

I think that answers my original question anyway, haha.

sholdowa

8 posts

Wannabe Geek

#1850606 22-Aug-2017 18:20

Just migrated to VDSL, provided by Digital Clout, to replace my Voda ADSL. Router is a Draytek Vigor 130. Looks like I'm on the edge like this user. After playing around with the snr, setting it to -50 improves download speed from 12.4Mb/s to 18Mb/s, but upload speed is pretty constant at 360Kb/s

> vdsl status
---------------------- ATU-R Info (hw: annex A, f/w: annex A/B/C) -----------
Running Mode : 8B State : SHOWTIME
DS Actual Rate : 17986000 bps US Actual Rate : 362000 bps
DS Attainable Rate : 18814120 bps US Attainable Rate : 360000 bps
DS Path Mode : Interleave US Path Mode : Fast
DS Interleave Depth : 152 US Interleave Depth : 1
NE Current Attenuation : 28 dB Cur SNR Margin : 2 dB
DS actual PSD : -5.-4 dB US actual PSD : 14. 1 dB
NE CRC Count : 5 FE CRC Count : 204058
NE ES Count : 1 FE ES Count : 114943
Xdsl Reset Times : 0 Xdsl Link Times : 6
ITU Version[0] : b5004946 ITU Version[1] : 544e0000
VDSL Firmware Version : 05-07-06-0D-01-07 [with Vectoring support]
Power Management Mode : DSL_G997_PMS_L0
Test Mode : DISABLE
-------------------------------- ATU-C Info ---------------------------------
Far Current Attenuation : 42 dB Far SNR Margin : 6 dB
CO ITU Version[0] : 00000000 CO ITU Version[1] : 00000000
DSLAM CHIPSET VENDOR : < unknown >

Obviously this is a bit worse than my ADSL connection, which is sad. Is there anything else I can do? Replace cables, filters, other tweaks in the Draytek?

hio77

12999 posts

Uber Geek

ID Verified

Trusted

Lizard Networks

#1850608 22-Aug-2017 18:23

Upstream speed normally is internal wiring for the most part.

Remember snr tweaking is at your own risk. With ddDLM on the linr it is very likely inital gains will be lost as it returns you to a stable rate by its conditional.

#include <std_disclaimer>

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

sholdowa

8 posts

Wannabe Geek

#1850610 22-Aug-2017 18:29

Thanks for that. Being a newbie, where can I get that decoded? Would it be best to reset my SNR to 0 ( and sacrifice 5Mb/s upload speed ) to retrieve it and more in a couple of weeks, and is there anything I can do to improve the wiring ( rip out the dedicated sky socket, as it's next? )

Cheers,

Steve

RunningMan

8953 posts

Uber Geek

#1850634 22-Aug-2017 19:21

sholdowa:

[snip]( rip out the dedicated sky socket, as it's next? )

There's the clue! I'd suggest getting a master filter installed. It'll cost a couple of hundred if you can't DIY and 30ish if you can. It basically bypasses all your internal wiring and gives a dedicated modem outlet. Essentially most phone wiring was only ever designed for voice frequencies, and doesn't cope well with the high frequencies of xDSL. Some of the extra phone sockets installed by Sky installers are notorious for poor xDSL performance.

As @hio77 says - sort the internal wiring before screwing with noise margin. DLM will override your changes with time anyway.

@coffeebaron may be able to help with a master splitter instal in Auckland / Waikato.

EDIT: Did get da spelling bad

sholdowa

8 posts

Wannabe Geek

#1851013 23-Aug-2017 09:31

Sadly I'm near Christchurch. Any takers?

sholdowa

8 posts

Wannabe Geek

#1851750 24-Aug-2017 10:14

So it's arrived, faster than the speed of light. Does it need to be installed in the telecom box on the outside wall, with the 3 bladed screws?

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