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Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 08 Mei 2018, 23:23
door sociableorg
Hi Belgacom/Proximus gurus - I just moved houses and got connected with a DSL connection. I have an old Sagemcom CS50001 from my old place. The technician connected the modem and looks like internet connectivity is achieved. However the DL and UL speeds are pretty bad. I suspect some bad internal wiring resulting in lots of dropped packets (lossy DSL line). Is there a way to troubleshoot if the issue is inside my apartment? Thanks for any pointers!

Here is my output from the Sagem tool.

Code: Selecteer alles

B-Box 3 Sagem Tool v0.13.0
--------------------------
Device:                        B-Box 3 Sagem

Downstream current bit rate:   2,758 kbps
Upstream current bit rate:     3,046 kbps

Downstream max bit rate:       10,282 kbps
Upstream max bit rate:         3,266 kbps

Downstream attenuation:        44.4 dB

Downstream noise margin:       10.4 dB
Upstream noise margin:         6.5 dB

Vectoring down:                no
Vectoring up:                  no
Modem vectoring compatible:    yes
ROP vectoring compatible:      no

DSL standard:                  VDSL2 Annex B
DSL profile:                   8d
Estimated distance:            861 m

Proximus profile name:         unknown
Proximus DLM profile:          unknown
Proximus repair profile:       unknown

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 06:57
door fvhbrugge
what is speed result indicated here :

https://www.proximus.be/en/id_speedtest ... tml#/input

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 07:53
door Sinna
You're using a non-approved DSL modem. Chances are high that you get better results (if the URL posted by fvhbrugge indicates higher speeds are achievable). If you have a Proximus subscription, you should get a BBox3 'free-of-charge'.

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 08:32
door sociableorg
Thanks for the quick replies. I do have the BBOX-3 (CS50001 is a BBOX-3 AFAIK). I have figured out part of the problem I think. I was using an 'ethernet over powerline' adapter in an electrical socket that was right next to the the DSL/phone jack (RJ11 socket). To further complicate things, I had the power cable from the DSL modem going into the same electrical socket. There seems to be some interference introduced. I unplugged the 'ethernet over powerline' power adapter and now the attenuation and DL/UL speeds seem in a normal range. Thanks once again.

Code: Selecteer alles

B-Box 3 Sagem Tool v0.13.0
--------------------------
Device:                        B-Box 3 Sagem

Downstream current bit rate:   16,559 kbps
Upstream current bit rate:     3,046 kbps

Downstream max bit rate:       24,425 kbps
Upstream max bit rate:         4,586 kbps

Downstream attenuation:        17.6 dB

Downstream noise margin:       10.6 dB
Upstream noise margin:         9.5 dB

Vectoring down:                no
Vectoring up:                  no
Modem vectoring compatible:    yes
ROP vectoring compatible:      no

DSL standard:                  VDSL2 Annex B
DSL profile:                   8d
Estimated distance:            583 m

Proximus profile name:         16,5/3
Proximus DLM profile:          yes
Proximus repair profile:       no

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 08:53
door raf1
sociableorg schreef:Is there a way to troubleshoot if the issue is inside my apartment?

Downstream attenuation is too high to get a better download speed.

First check the attainable speeds at your address: http://linetest.be and https://proximus.be/internetspeed

If attainable speed are higher than what you got, you should check your modem and your indoor wiring:
- connect your modem always directly to the Proximus NTP2007-socket
- use a Bbox3, FRITZ!Box 7360 v2 or FRITZ!Box 7490 to get the highest possible speeds
- check downstream and upstream attenuation with another modem
- disconnect and insulate unused wires from the indoor telephony/dsl network
- unfix connections from the Proximus NTP2007-socket, sand the copper ends and tighten the connections again

and NEVER USE POWERLINE ADAPTERS for internal network, always use UTP cat 5e cabling or Wifi

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 10:28
door Sinna
sociableorg schreef:I do have the BBOX-3 (CS50001 is a BBOX-3 AFAIK)

My bad, I based my assumption on slightly different pictures. You're correct.

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 11:27
door sociableorg
raf1 schreef:
sociableorg schreef:Is there a way to troubleshoot if the issue is inside my apartment?

Downstream attenuation is too high to get a better download speed.

First check the attainable speeds at your address: http://linetest.be and https://proximus.be/internetspeed

If attainable speed are higher than what you got, you should check your modem and your indoor wiring:
- connect your modem always directly to the Proximus NTP2007-socket
- use a Bbox3, FRITZ!Box 7360 v2 or FRITZ!Box 7490 to get the highest possible speeds
- check downstream and upstream attenuation with another modem
- disconnect and insulate unused wires from the indoor telephony/dsl network
- unfix connections from the Proximus NTP2007-socket, sand the copper ends and tighten the connections again

and NEVER USE POWERLINE ADAPTERS for internal network, always use UTP cat 5e cabling or Wifi


Thanks for the detailed reply. I am trying to avoid using these powerline adapters, but running CAT5e all over the apartment seems really cumbersome. I am going to try and position the BBOX-3 for better Wifi reach.

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 11:40
door MClaeys
A decent powerline adapter shouldn't give any issues though. I've worked years at home with the modem plugged into a powerline adapter that was plugged in within a few cm of the NTP2007, never had any issues with it, I got the speeds that were expected at my place. Mine were from Devolo.

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 12:08
door raf1
MClaeys schreef:A decent powerline adapter shouldn't give any issues though.

That's only true if you have a decent electrical installation in your building with proper wiring and grounding.

Re: Low DSL speeds (proximus) at new place *sorry about the English language post*

Geplaatst: 09 Mei 2018, 12:18
door wied
For flat/appartment locations the use of Proximus wifi bridges is probably more stable/reliable...