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13 posts


# 127330 6-Aug-2013 20:24
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Hi all,
I got VDSL installed and everything is working ok, but a question regarding DLM. I switch off the router every night before going to be and switch it back on the next afternoon when its needed again. So the router is switched on from say 1400 hrs to 2300 hrs everyday except weekends. Does DLM interpret this power off and on of the router as an unstable connection and reduce the speed trying to make it a more stable connection? I ask this as now my router is syncing at the below mentioned rates. I am certain that in the first week of install it was syncing at 33500 kbps down and 10350 kbps up.

Line Stats
Uptime: 0 days, 6:39:53
DSL Type: ITU-T G.993.2
Bandwidth (Up/Down) [kbps/kbps]: 10,356 / 27,207
Data Transferred (Sent/Received) [B/B]: 0 / 0
Output Power (Up/Down) [dBm]: 6.0 / 13.5
Line Attenuation (Up/Down) [dB]: 32.8 / 14.9
SN Margin (Up/Down) [dB]: 17.8 / 12.1
System Vendor ID (Local/Remote): TMMB / ----
Chipset Vendor ID (Local/Remote): BDCM / IKNS
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): -
Error Seconds (Local/Remote): 3 / 0
FEC Errors (Up/Down): 372 / 12,677
CRC Errors (Up/Down): 1 / 12
HEC Errors (Up/Down): 0 / 207


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5725 posts

Uber Geek

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  # 872846 6-Aug-2013 20:24
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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.

2785 posts

Uber Geek

  # 872871 6-Aug-2013 20:37
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DLM needs to be added to the robots vocab.

Give the modem a couple of days and it should sort itself out.


1246 posts

Uber Geek

  # 872880 6-Aug-2013 20:45
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I would say yes it would see your line as unstable - is there a reason you turn it off? I thought only nana turned off the router to keep the hackers out.

28275 posts

Uber Geek

Biddle Corp
Lifetime subscriber

  # 872891 6-Aug-2013 20:54
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Turning off a device like this will affect DLM, especially in the early stages.

3322 posts

Uber Geek


  # 872892 6-Aug-2013 20:54
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Yes, I'd say stop turning the modem off. If you want to look through some adventures with DLM, have a browse through this thread:

But the short answer is that while we don't have concrete info on what DLM considers bad, power offs should be avoided if possible. As above, why turn it off? modem\routers generally use very little power.

If you want to know what DLM profile you're on though you'll need to telnet into your modem then I think issue the following command:

xdsl info expand=enabled

and compare INP and delay with the figures in Sam's first post

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