Unstable ADSL

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Joined
5 Apr 2003
Posts
486
Location
Scotland, UK
I'm currently with BT Internet (sadly the internet is provided as part of my tenancy agreement - so can't change my provider).

Until about two weeks ago, I generally achieved around 7 meg-ish on my connection. However, more recently I've been having a number of issues whereby the HomeHub would simply lose the internet connection and the sync rate has been jumping all over the place.

After many disconnects, I've had a look in the settings and I have taken the following readings 15 minutes apart:

ptime: 0 days, 0:06:12
Modulation: G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]: 448 / 7,424
Data Transferred (Sent/Received) [KB/MB]: 402.00 / 6.38
Output Power (Up/Down) [dBm]: 12.0 / 19.5
Line Attenuation (Up/Down) [dB]: 16.5 / 31.0
SN Margin (Up/Down) [dB]: 21.0 / 14.5
Vendor ID (Local/Remote): TMMB / TSTC
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 6 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 54 / 0
FEC Errors (Up/Down): 0 / 3,168
CRC Errors (Up/Down): 0 / 1,495
HEC Errors (Up/Down): 0 / 1,293
Line Profile: Interleaved


Uptime: 0 days, 0:01:29
Modulation: G.992.1 annex A
Bandwidth (Up/Down) [kbps/kbps]: 224 / 1,664
Data Transferred (Sent/Received) [MB/KB]: 1.14 / 703.00
Output Power (Up/Down) [dBm]: 12.5 / 19.5
Line Attenuation (Up/Down) [dB]: 18.0 / 34.0
SN Margin (Up/Down) [dB]: 7.0 / 19.5
Vendor ID (Local/Remote): TMMB / TSTC
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 8 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 58 / 0
FEC Errors (Up/Down): 0 / 0
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 0 / 0
Line Profile: Interleaved


As you can see, the uptime on the line is low as it keeps dropping. From those that are knowledgeable in this area - why would the line keep failing and why is the sync rate jumping around like crazy?

Thanks in advance.
 
It could be one of a million reasons. At the end of the day you (or whoever is the account holder, I guess) needs to phone BT Retail and get them to look at it as a fault of some sort.

Your upstream SNR margin and sync rate both drop a lot as well and your attenuation shifts a little (but that could be nothing).

Given the error and Loss of * counts are all resetting, it's like the router itself is restarting itself.
 
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