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[NewtronStar]

From looking at my old stats when I was banded at 66999 with G.INP my attainable rate was over 70mb so I'd easily expect a 68000 sync rate if it wasn't banded.

Does banding lower the attainable the only thing I know that lowers the attainable is crosstalk 
or a line fault

[gazaai]

Does banding lower the attainable the only thing I know that lowers the attainable is crosstalk 

The attainable rate to me at the moment does not matter as there is no G.INP on the line so it's hard to believe what it will be.

[Interceptor121]

Does banding lower the attainable the only thing I know that lowers the attainable is crosstalk 
or a line fault

Attainable rate appears to be a theoretical value where SNR is 6 dB. The sync rate you get depends on the performance of the line itself.
From what I can see the modem syncs at the same value regardless however the effective throughput is improved with G.INP so the line reports a better IP profile with G.INP than it does when only interleave and RS is used as the payload is less
The broadcom paper that explains it is here https://www.broadcom.com/collateral/wp/XDSL-WP101-R.pdf
Lines are what they are but the ability to work better on error correction means improved speeds

[NewtronStar]

I think your entering the fifth week without G.INP now this only a guesstimate the 15th of august is looking good for the return of the ginp 

PS I'll not be replying to Interceptor121 in case he gets your thead locked 

[Interceptor121]

It was not me that got the post deleted and the thread locked though I take my share of responsibility!

[licquorice]

The HG612 appears to take into account the level of INP applied to the line when predicting max attain. With INP=49, I have a max attain of <>49but when INP was 44 it was <>56

[WWWombat]

Trying to work out the extra SNRM of 0.8db on my line that works out at close to 2Mbps that works out at 61995 Kbps now if you say G.INP gave you an extra 5Mbps then 61995 + 5000 = 66995 kbps

Also G.INP can take 7 weeks to be turned back on after line reset or change of provider from what I can see in this forum

PS my SNRM mathematics may be off but WWWombat will give your correct results if he is about.

I'm on holiday, so don't have my cheat tables with me. IIRC, 3dB is worth 11Mbps to someone with access to the full spectrum (likely syncing 70-80Mbps). I guess 0.8dB would be worth about 3Mbps.

Note that when G.INP was added to my line, the attainable went up (IIRC) nearly 10Mbps (97 -> 107). Remember this is a line that was already fastpath and synced at 80/20, with around 60 ES/day. There was no FEC overhead, so the (small amount of) overhead added by retransmission ought to be a negative impact of around 4Mbps, though it did take me to zero ES/day.

From my experience, I'd accept that gazaai's line is capable of jumping to 68Mbps, with its own perception of what other coding gains have been gained.

I also don't have access to the graph of speed improvements gained with G.INP (from BTW?), but it is certainly the case that not all of the improvement can be explained by just those lines losing the old-style FEC+interleaving setup. G.INP did more ... something less tangible.

[WWWombat]

Does banding lower the attainable the only thing I know that lowers the attainable is crosstalk 
or a line fault

Nope. No change in the attainable ... but it is good to remember that the attainable is little more than an educated guess by the modem, about a hypothetical future.

Banding can have other effects though. Sometimes it can cause FEC to be turned on (without interleaving), a little like upstream often does.

[gazaai]

Wow big problem this morning. It seems I may have my first line fault. The speed is super low now with the SNR going all over the place, do you think I should book an engineer?

Edit: Just picked up the phone and have no dial tone, must be running on 1 cable lol don't know what's happened, have booked an engineer.

[burakkucat]

What you have described fits into the category of a "one leg dis".

[NewtronStar]

The disconnected leg was reconnected pretty quickly this morning at 08:07 any ideas to what went on there ?

[gazaai]

The disconnected leg was reconnected pretty quickly this morning at 08:07 any ideas to what went on there ?

I told plusnet I had no dial tone but a slow internet connection, they told me they had raised the issue with Openreach and said the issue was most likely not within my home and that it would be fixed within 1-3 days. The next day you are correct it was about 8am it got reconnected, no DLM reset tho so now my line is even worse with DLM.

[NewtronStar]

At this stage your better off without a OR DLM reset as that could extend the wait for G.INP by another month and a half, that's two DLM intervention you've had in two weeks.

Thinking this time the Interleaving is going to stick around for a while as 36000 errored seconds just above what Kitz experienced and it took 10 days for fastpath to return but by that time G.INP could even come back on your line.

Anyway as in all cases it's a wait and watch game.     

[gazaai]

At this stage your better off without a OR DLM reset as that could extend the wait for G.INP by another month and a half, that's two DLM intervention you've had in two weeks.

Thinking this time the Interleaving is going to stick around for a while as 36000 errored seconds just above what Kitz experienced and it took 10 days for fastpath to return but by that time G.INP could even come back on your line.

Anyway as in all cases it's a wait and watch game. 

Lol it was actually 57000 error seconds, after this fault my error seconds are way lower than used to be now so pretty happy about that. I just wanted the reset because of the banding, it might never get removed even with G.INP

[gazaai]

I think your entering the fifth week without G.INP now this only a guesstimate the 15th of august is looking good for the return of the ginp 

PS I'll not be replying to Interceptor121 in case he gets your thead locked 

Lol NewtonStar what a guess!, my connection has just resynced and I now have G.INP again. 

Still banded tho...