Sync Rate vs Speed test massive differences

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mentalinc

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#115978 14-Apr-2013 08:37

Hi All

I installed a master filter at a friends house yesterday (they have structured cabling) while the sync rate didn't change (appears to be ADSL1 max) the speed tests did. The downstream attenuation dropped by around 2dB (20 -> 18).

I'd expect better speeds than what is being delivered considering the sync rates etc but I do note they are getting all that Chorus SAT says they should:

Based on Chorus SAT:
This address is in an exchange area where the exchange has been upgraded with faster broadband equipment.
Exchange: Massey

Network upgrade scheduled:

RBI Broadband > 1 Mbps by Jun-2013

I did the following tests using my setup of a Draytek 120 and a Asus RT-N16. I note it is only ADSL1 (G.DMT) but down the road a bit is cabinetised is this inflating the sync rate?

Before filter install:
Speedtest:

Sync rates:

After filter installed
Speedtest:

Sync rates:

So based on the sync rates shouldn't the download be closer to 5Mbit than 1?

CPU: AMD 5900x | RAM: GSKILL Trident Z Neo RGB F4-3600C16D-32GTZNC-32-GB | MB: Asus X570-E | GFX: EVGA FTW3 Ultra RTX 3080Ti| Monitor: LG 27GL850-B 2560x1440

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PeterReader

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#799023 14-Apr-2013 08:37

Hello... Our robot found some keywords in your post, so here is an automated reply with some important things to note regarding broadband speeds.

If you are posting regarding DSL speeds please check that

- you have reset your modem and router

- your PC (or other PCs in your LAN) is not downloading large files when you are testing

- you are not being throttled by your ISP due to going over the monthly cap

- your tests are always done on an ethernet connection to the router - do not use wireless for testing

- you read this topic and follow the instructions there.

Make sure you provide information for other users to help you. If you have not already done it, please EDIT your post and add this now:

- Your ISP and plan

- Type of connection (ADSL, ADSL2, VDSL)

- Your modem DSL stats (do not worry about posting Speedtest, we need sync rate, attenuation and noise margin)

- Your general location (or street)

- If you are rural or urban

- If you know your connection is to an exchange, cabinet or conklin

- If your connection is to a ULL or wholesale service

- If you have done an isolation test as per the link above

Most of the problems with speed are likely to be related to internal wiring issues. Read this discussion to find out more about this. Your ISP is not intentionally slowing you down today (unless you are on a managed plan). Also if this is the school holidays it's likely you will notice slower than usual speed due to more users online.

A master splitter is required for VDSL2 and in most cases will improve speeds on DSL connections. Regular disconnections can be a monitored alarm or a set top box trying to connect. If there's an alarm connected to your line even if you don't have an alarm contract it may still try to connect so it's worth checking.

I recommend you read these two blog posts:

- Is your premises phone wiring impacting your broadband performance? (very technical)

- Are you receiving a substandard ULL ADSL2+ connection from your ISP?

I am the Geekzone Robot and I am here to help. I am from the Internet. I do not interact. Do not expect other replies from me.

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sbiddle

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#799061 14-Apr-2013 09:29

My pick would be a heavily congested ASAM (or possibly even a Conklin if you're not connected directly to the exchange). If you're on BUBA these days on this kit you're facing high odds of a slow connection due to peak time congestion.

plambrechtsen

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#799114 14-Apr-2013 11:25

I agree with what BiddleCorp said.

mentalinc

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#799144 14-Apr-2013 13:03

Yeah thought that might be the case.

CPU: AMD 5900x | RAM: GSKILL Trident Z Neo RGB F4-3600C16D-32GTZNC-32-GB | MB: Asus X570-E | GFX: EVGA FTW3 Ultra RTX 3080Ti| Monitor: LG 27GL850-B 2560x1440

Quic: https://account.quic.nz/refer/473833 R473833EQKIBX