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Author Topic: G.INP - BT rollout 2015.  (Read 271954 times)

currytop

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Re: G.INP - BT rollout 2015.
« Reply #360 on: May 24, 2015, 07:01:15 PM »

FWIW latency with my ECI modem was ~60mS, and since changing to HG612, ~22mS. I can't be certain G.INP had been turned on the cabinet while using the ECI, but G.INP is certainly enabled now with the HG612 and switched on a little over 24hrs after swapping.

Steve
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GigabitEthernet

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Re: G.INP - BT rollout 2015.
« Reply #361 on: May 24, 2015, 11:20:41 PM »

So you gained approximately 10Mb of sync when G.INP was enabled? Was that as soon as it was enabled or was there a delay?
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jid

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Re: G.INP - BT rollout 2015.
« Reply #362 on: May 25, 2015, 09:48:00 AM »

Had a resync this morning after over 60 days uptime. Seems upstream error correction is turned off now. No inp or interleaving level applied upstream.

Gained some attainable sync speed as well and the Snr margin has increased slightly. Upstream sync speed dropped 1kbps too so guessing it's to do with the change to software on the cabs.

G.inp is still enabled though. Huawei everything for me cab and HG612.
« Last Edit: May 25, 2015, 10:10:55 AM by jid »
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Jamie

BT FTTP - 75meg | Sky Q |  Bridgend Weather

KIAB

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Re: G.INP - BT rollout 2015.
« Reply #363 on: May 25, 2015, 10:13:31 AM »

So you gained approximately 10Mb of sync when G.INP was enabled? Was that as soon as it was enabled or was there a delay?

He not the only on to see gains, I also got around 10Mb when G.INP was switched on.
But, I noticed looking at DSLStats, Interleave is on,& next to is (8).
« Last Edit: May 25, 2015, 10:17:18 AM by KIAB »
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jid

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Re: G.INP - BT rollout 2015.
« Reply #364 on: May 25, 2015, 10:18:46 AM »

So you gained approximately 10Mb of sync when G.INP was enabled? Was that as soon as it was enabled or was there a delay?

I too nearly gained 10mbps sync. Also saw zero crc and ES counts after G.INP was enabled. Now at full sync, was around the 71mb mark. Ping times decreased a lot as well.

And as soon as G.INP is enabled, its when the line resyncs so you'll see the speed increase immediately, if you're using Tony's brilliant MDWS site, an email will also be generated to inform you its been enabled.
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Jamie

BT FTTP - 75meg | Sky Q |  Bridgend Weather

jid

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Re: G.INP - BT rollout 2015.
« Reply #365 on: May 25, 2015, 10:21:01 AM »

But, I noticed looking at DSLStats, Interleave is on,& next to is (8).

Interleave being on is part of the G.INP process, you'll notice your INP level is a high value too.

My Interleave level is 16 with G.INP and INP level is 48. The DSLAM decides depending on your lines conditions what levels of INP and Interleave to apple for the G.INP process. Although you should note Delay is 0 even though interleaving is applied.
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Jamie

BT FTTP - 75meg | Sky Q |  Bridgend Weather

kitz

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Re: G.INP - BT rollout 2015.
« Reply #366 on: May 25, 2015, 11:54:17 AM »

So you gained approximately 10Mb of sync when G.INP was enabled? Was that as soon as it was enabled or was there a delay?

Just to be clear.  That should be more like regained 10Mbps in respect of how much speed was lost through using an ECI modem and a non-ReTX profile.  10Mbps is a typical overnight loss seen by a line which was is using an ECI modem after G.INP was applied.  By switching to a HG612 users regain the lost 10Mbps

You are in a totally different position in that G.INP hasn't been enabled at all on your line and you are on one of the 'old' DLM profiles.  I don't want you under the false hope that when Openreach eventually turn g.inp back on for all Huawei lines that anyone previously not on a g.inp profile will automatically gain 10Mbps.   
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NewtronStar

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Re: G.INP - BT rollout 2015.
« Reply #367 on: May 25, 2015, 04:26:06 PM »

Once the 2nd G.INP rollout on the 26th has begun it could take upto 6 weeks before it hits my cabinet as the 1st G.INP rollout took ages and if your an impatient person like me it will feel a lot longer.

And my sync should increase by 2-3 Mbps if all go's well but this time the line has a higher Interleave DS depth of 593 and 1 on the US were as when the 1st G.INP rollout started this line was on a strange fastpath profile depth 17 on DS and 8 on US
« Last Edit: May 25, 2015, 04:36:16 PM by NewtronStar »
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currytop

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Re: G.INP - BT rollout 2015.
« Reply #368 on: May 25, 2015, 10:15:54 PM »

So you gained approximately 10Mb of sync when G.INP was enabled? Was that as soon as it was enabled or was there a delay?

Sorry Alec, not sure if you were addressing me or not? But in my case max attainable DS with the ECI was ~42Mbps (service capped at 40Mbps). On swapping to the HG612, max attainable rose to ~45.5Mbps but no G.INP and interleave depth still ~1350. A little over 24hrs later I discovered G.INP was active and max attainable ~47-48Mbps. In the first phase of using the HG612 latency had fallen to around 35-40mS, and once G.INP was active around 22mS.

Like I say I can't be sure G.INP was already enabled on the line beforehand, but the timing is pretty coincidental.

Steve
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Tazz

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Re: G.INP - BT rollout 2015.
« Reply #369 on: May 26, 2015, 08:13:41 PM »

Can someone tell me if G.INP always has a min of 8ms Interleaving? Since it was enable I have been unable to get it lower I was on fast path before:

            Downstream   Upstream
Line attenuation (dB):     15.9      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   79998      20000
SNR margin (dB):           6.2      9.1
Power (dBm):               14.2      6.8
Interleave depth:          8      8
INP:                       45.00      47.00
G.INP:                     Enabled      
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blue166

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Re: G.INP - BT rollout 2015.
« Reply #370 on: May 26, 2015, 10:58:07 PM »

So what is the deal with the future of the ECI modem - Should people be buying a HG612 or should they be waiting to see what happens with the ECI ??
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jid

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Re: G.INP - BT rollout 2015.
« Reply #371 on: May 26, 2015, 10:59:36 PM »

Can someone tell me if G.INP always has a min of 8ms Interleaving? Since it was enable I have been unable to get it lower I was on fast path before:

            Downstream   Upstream
Line attenuation (dB):     15.9      0.0
Signal attenuation (dB):   Not monitored      
Connection speed (kbps):   79998      20000
SNR margin (dB):           6.2      9.1
Power (dBm):               14.2      6.8
Interleave depth:          8      8
INP:                       45.00      47.00
G.INP:                     Enabled

I believe that isn't 8ms interleaving, it's level 8. This is normal, it can be any value, mines 16 for example. It depends on the line conditions on sync, what Interleave level is applied to work with the G.INP.

G.INP will have some delay, and this can increase with noise bursts.
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Jamie

BT FTTP - 75meg | Sky Q |  Bridgend Weather

Black Sheep

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Re: G.INP - BT rollout 2015.
« Reply #372 on: May 27, 2015, 11:05:19 AM »

From memory, I think 8ms is the lowest of the settings ?? I can't recall seeing 4ms or 2ms ?? As jid points out though, they do increment upwards i.e.: 32, 64 etc

Edited, as put 'kid' ..... not 'jid'.  :)
« Last Edit: May 27, 2015, 01:34:42 PM by Black Sheep »
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Tazz

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Re: G.INP - BT rollout 2015.
« Reply #373 on: May 27, 2015, 12:49:39 PM »

Got it. Many thanks guys. I am happy with it being 8 tbh still good pings  ;D
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blue166

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Re: G.INP - BT rollout 2015.
« Reply #374 on: May 27, 2015, 06:48:51 PM »

To clear something up for me please if you can..

I know ECI cabs are yet to be looked at, but does anyone know if the DSLAM on the ECI will be problematic? - I think it would be rough going if BT Openreach deploy a system that spoils a decent line and slows sync speed down.

So if you are on an ECI cab it is not worth getting an Huawei HG612 3B as the DSLAM will not be able to run G.INP in both up and down directions?

If no one knows then Openreach need to clarify this. I would be annoyed to go from a 6ms ping and 75mb download 18 upload using an ECI cab and modem to 4 times the latecny and losing 15meg off my download and whatever off upload.

That would probably force me back to the over utilized Virgin Media network. At least there network is equal to a degree - unlike this Huawei vs ECI lottery. - As far as I see it anyway?!?
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