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[kitz]

I dont know what that relates to  Im afraid since the HECs look ok here

      [Downstream (RX) Interleave path]
        CRC:    55872   FEC:    52844481        NCD:    0
        LCD:    0       HEC:    0 

and this is fine

Errored Seconds:        0       Severely Err Secs:      0

If you had lots of HEC's raking up I'd expect to see at least some errored seconds..
Theres also a train of thought that at least some (but not all) HEC errors may add to the CRC count too depending upon how many bits were errored in the ATM cell.
Its possibly some historic count?  Dont know sorry.

[jid]

What is the Attainable rate, as I noticed it varies all of the time. Is it what the line can support or what it can sync upto?

Thanks

[kitz]

Have a read of linestats explanation.... and also Router stat errors

[jid]

I have been noticing recently, I put the router on in the morning, by about 7pm, the SNR is in funny figures.

Then by around half 8ish, the Speed has dropped and I have to resync to be able to use the connection?

The sync is the same, 4096kbps?

Is this a congestion thing or something?

[kitz]

>> the SNR is in funny figures.

More likely that your SNR has dropped into negative figures, some routers cant display negative SNR and show a large number instead.

[jid]

Thanks Kitz!

Ping seems a bit long:-

[mr_chris]

Looks like Tiscali have you on a fixed 4096 sync setting.

Low SNR means your router can't 'hear' the signal above the noise on the line, and so errors occur in the signal. Sometimes the router is able to fathom out what was actually meant, but other times the router has to request a retransmission of the problem packet. It's exactly like trying to talk to somebody in a noisy room, and either not hearing a complete sentence but still being able to fathom out the words you didn't hear properly, or not hearing the sentence properly and having to say "pardon?".

This is why speed drops when the SNR gets too low, errors rack up and packets have to be retransmitted, so the effective speed of 'good' packets is slower than it should be.

As for the ping time, could be a number of issues, not necessarily a problem, but unfortunately, Tiscali aren't known for the quality of their network, as we've said many times before!

[jid]

OK

That's why I need to sometimes refresh pages then is it?

So that is being caused by this fixed profile.

[kitz]

>> That's why I need to sometimes refresh pages then is it?

Possibly yes :/

[jid]

I have now had confirmation that my email has been read as I had a read receipt sent at 3am this morning.

Keep your fingers crossed now and hopefully I will be getting somewhere with this! 

[jid]

They have now put me on an 8meg Adaptive profile!!!

That was really difficult wasn't it!

I will keep my eye on it now.

        US Connection Rate:     256     DS Connection Rate:     5952
        DS Line Attenuation:    30      DS Margin:              8
        US Line Attenuation:    16      US Margin:              30
        US Payload :            1033392 DS Payload:             6519264
        US Superframe Cnt :     34974   DS Superframe Cnt:      34974
        US Transmit Power :     11      DS Transmit Power:      19
        LOS errors:             0       SEF errors:             0
        Errored Seconds:        0       Severely Err Secs:      0
        Frame mode:             3       Max Frame mode:         0
        Trained Path:           1       US Peak Cell Rate:      603
        Trained Mode:           3       Selected Mode:          1
        ATUC Vendor Code:       4946544E        ATUC Revision:  2
        Hybrid Selected:        1       Trellis:                1
        Showtime Count:         2       DS Max Attainable Bit Rate: 5952 kbps
        BitSwap:                1       US Max Attainable Bit Rate:     n/a
        Annex:                  AnxA    psd_mask_qualifier: 0x0000
        ATUC ghsVid:  b5 00 49 46 54 4e 71 53
        T1413Vid: 00 00         T1413Rev: 00            VendorRev: 00
        ATUR ghsVid:  44 4c 69 6e 6b 00 00 00
        T1413Vid: 00 00 T1413Rev: 00    VendorRev: 00

        [Upstream (TX) Interleave path]
        CRC:    1       FEC:    0       NCD:    0
        LCD:    0       HEC:    0

        [Downstream (RX) Interleave path]
        CRC:    0       FEC:    15      NCD:    0
        LCD:    0       HEC:    0

        [Upstream (TX) Fast path]
        CRC:    0       FEC:    0       NCD:    1
        LCD:    0       HEC:    0

        [Downstream (RX) Fast path]
        CRC:    0       FEC:    0       NCD:    0
        LCD:    0       HEC:    0

[ATM Stats]
        [Upstream/TX]
        Good Cell Cnt:  21529
        Idle Cell Cnt:  337449

        Tx Packets Dropped Count:       0
        Tx Bad Packets Count:   19

        [Downstream/RX)]
        Good Cell Cnt:  135818
        Idle Cell Cnt:  8210308
        Bad Hec Cell Cnt:       0
        Overflow Dropped Cell Cnt:      0
        Rx Packets Dropped Count:       0
        Rx Bad Packets Count:   0


[SAR AAL5 Stats]
        Tx PDU's:       118386
        Rx PDU's:       172861
        Tx Total Bytes: 16562204
        Rx Total Bytes: 183806645
        Tx Total Error Counts:  0
        Rx Total Error Counts:  462


[OAM Stats]
        Near End F5 Loop Back Count:    0
        Near End F4 Loop Back Count:    0
        Far End F5 Loop Back Count:     0
        Far End F4 Loop Back Count:     0
        SAR OAM Ping Response Drop Count=15

[mr_chris]

Well, at least you're on an adaptive profile now - which they should have done before. Putting you on a 4096 fixed rate profile was pretty dumb, but was probably done in response to your quest for faster sync.

However, given your line fault, I do predict that you will end up at some point (probably night-time) with a sync of LESS than 4Mb. It's up to you whether you stick with whatever it ends up at, or if you can be bothered to reboot every morning to try and up the speed.

I suggest you leave the router to sync/resync as it wants to for a few days, that way it'll find its own sync it's comfortable with.

Install routerstats and do some logging of speeds etc, if you haven't already.

[jid]

Yeh, its Adaptive upto 8meg now.

Before they were capping it at 6meg Adaptive, so at least I can attain 8meg if my line will choose to!

I cant use Router Stats with my router for some reason I spent a whole day trying to set it up ages ago and I just couldn't get it going!

D Link DSL-G624T

[jid]

If I resynced it on a low SNR, will it sync lower then?

As i can resync it a few times and it will go up!

I am on this profile now:-

8M_896     Down8160     Up:896           Adaptive:Adaptive      12db           Interleaved - Size 8

Whereas before I was on :-
4096 High SNR     Down 4096     Up 256           Adaptive:Fixed                 Interleave     Size 8

The lady I spoke to on the phone said the profile is an 8meg one, therefore it will go up higher than 6meg.

Hopefully, if I sync in the morning I will have a better sync than EVER before! I will keep you updated.
However, like Chris said, I will be leaving it on all of the time for a while to see how it copes.

The SNR isn't too bad yet 8dB. Best ever for this time of night!

[jid]

I have synced at 6304kbps this morning so that means they are not capping me to 6meg anymore. Wohooo!  

How would I go about getting it higher than that?

Is it just a case of waiting for it to sync higher?