The higher your sync, the higher the error rate. Fact.

There's more going down the line every second, therefore more to go wrong. (Even when you are doing nothing there is a continual stream of bits in both directions at the related sync speed).

Nice! You are finally there and getting what your line deserves . It was rather protracted .

Yeah! Well right now anyway. Still it shouldn't take a 6db NM to get full sync on my line... But I think this was what I was getting before, unless I had interleaving off.

Hopefully the jump to ADSL2+ will give me a higher sync, even if the NM and output power stay the same, which I don't think they will considering the quality and stability of my line

@Robert So far I've seen 45 FEC Errors since the DLM re synced this morning, compared to other people's stats (@MrSaffron showed me his) it seems like nothing to worry about, is there a level where it does become a problem?

Edited by matthewcl375 (Fri 15-Mar-13 23:35:08)

In reply to a post by matthewcl375:

@Robert So far I've seen 45 FEC Errors since the DLM re synced this morning, compared to other people's stats (@MrSaffron showed me his) it seems like nothing to worry about, is there a level where it does become a problem?

A few thousand a minute is a bit unhealthy. A few thousand an hour is not really an issue.

Ah, and from what I've heard it doesn't affect bandwidth as much as CPU usage on the client machine

I have a question for you folks:

Looking at my stats right now, would you say I would be able to get away with having interleaving switched off, or does the presence of FEC Errors mean it needs to be on?

Uptime: 1 day, 17:13:03
DSL Type: ITU-T G.992.1
Bandwidth (Up/Down) [kbps/kbps]: 448 / 7.616
Data Transferred (Sent/Received) [GB/GB]: 1,99 / 1,99
Output Power (Up/Down) [dBm]: 11,9 / 13,9
Line Attenuation (Up/Down) [dB]: 6,0 / 6,0
SN Margin (Up/Down) [dB]: 23,0 / 6,1
System Vendor ID (Local/Remote): TMMB / ----
Chipset Vendor ID (Local/Remote): BDCM / ALCB
Loss of Framing (Local/Remote): 9 / -
Loss of Signal (Local/Remote): 1 / -
Loss of Power (Local/Remote): 0 / -
Loss of Link (Remote): -
Error Seconds (Local/Remote): 10 / -
FEC Errors (Up/Down): 0 / 104
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): - / 0 / 0

NOTE: the loss of framing, loss of signal and loss of power are from the DLM Re Sync on friday AM

FEC errors are only there because interleaving is on. These are corrected errors, corrected by interleaving.

If on fast path, then it would be uncorrected errors CRC's only.

Clearly you are on a very short line, and 104 FEC errors in over a days up time is very good.

Yes, your line would be fine on fast path, but the difference achieved on IP profile is hardly worth the hassle.

As mentioned earlier, sit tight, wait for your new connection to 21cn kit. My line got 1.8 meg with 26db attenuation, would expect yours to produce around 20/22 meg, maybe even 24 if DLM sees it as stable for long enough.

Nah .

I think you mean you got 18Mbps not 1.8Mbps, and I have a comment about the OP's line.

His noise margin at 6dB is highly suspicious as normally on ADSL Max type connections at 7616kbps it should be sky-high. This has been part of the discussion about his line since the start. The change of the exchange connection may fix it though.
_{Edit - removed garbage posted due to being half asleep.}

Edited by RobertoS (Sun 17-Mar-13 12:19:04)

I think you mean you got 18Mbps not 1.8Mbps

Well look who's had their coffee already this morning !

However his noise margin at 6dB is highly suspicious as normally on ADSL Max type connections at 7616kbps it should be sky-high

Line Attenuation (Up/Down) [dB]: 6,0 / 6,0
SN Margin (Up/Down) [dB]: 23,0 / 6,1

Surely a 2nd cup of hot smokin' Joe required ??

In reply to a post by Zarjaz:

I think you mean you got 18Mbps not 1.8Mbps

Well look who's had their coffee already this morning !

However his noise margin at 6dB is highly suspicious as normally on ADSL Max type connections at 7616kbps it should be sky-high

Line Attenuation (Up/Down) [dB]: 6,0 / 6,0
SN Margin (Up/Down) [dB]: 23,0 / 6,1

Surely a 2nd cup of hot smokin' Joe required ??

By you, yes . Read what it says on the tin that you painted red.