Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: Sunzz on December 29, 2016, 04:15:52 PM
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Hey everyone, so iv been reading up on G.INP, and i believe G.INP was on eci cabinets for a little while but it was removed as some people reported problems? For anyone here whos experienced G.INP for a little while on there ECI cabinet, how was it?
did you gain performance? or lose it? etc etc :D fingers crossed its back in april 2017!
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http://forum.kitz.co.uk/index.php/topic,17446.0.html (http://forum.kitz.co.uk/index.php/topic,17446.0.html)
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Have watched both Huawei & ECI G.INP full roll-outs and Openreach seem to start the ball rolling in February for updates/upgrades it's almost like they have a 4 month window in the year to launch new tech on their network
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Hey everyone, so iv been reading up on G.INP, and i believe G.INP was on eci cabinets for a little while but it was removed as some people reported problems? For anyone here whos experienced G.INP for a little while on there ECI cabinet, how was it?
did you gain performance? or lose it? etc etc :D fingers crossed its back in april 2017!
It was enabled on my eci cab line for a short period of time and did increase sync speed approx 5-10% but correctable errors went through the roof I do not know if this is why it was removed. Errored seconds dropped to 0 or a rare 1 per hour.
I too hope it comes back to my line. Concerned that 3db is being done before Ginp though it would make more sense for Ginp first to make line more stable then allow reductions down to 3db.
I also wish they would allow 3db for upload as that is why I pay for 80/20 but due to crosstalk my upload is being impacted so a 3db target would help greatly.
Edit: I had and still have a fastpath line but Ginp did give me an increase in sync even though theoretically it shouldn't - several people do report getting better sync with Ginp even on fastpath so not just me - doesnt make sense but anything to give me back the 40% loss due to crosstalk is welcome.
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It depends if your line is on fastpath or interleaved with a line using fastpath you won't gain much in sync speed though your errored seconds should be very low, but if your line is interleaved then yes you will gain a lot more sync speed because there is less overheads.
I gain 7Mbps of sync with G.INP active compared to Interleaving
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Bit of a mash up for me. Saw ES go down but drop in sync though had a gain in sync after a pair swap and reverted to an unlocked eci modem. Fingers crossed we see something in April 2017...
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Again when G.INP becomes active on the ECI cabinets and find your having problems with G.INP with a third party modem/router make sure the firmware is up to date before contacting your ISP to complain about G.INP !
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I must have been one of the lucky ones, I saw no issues at all and a very stable line at the fastest sync speeds I have ever had so was very upset when it went away. My d/l speed is now 59995kbps and was 71000kbps. I am using a ZyXEL VMG8924 as both modem and router (single unit).
Stuart
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I also had a big jump up (was interleaved) in speeds and no issues.
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Same for me, it only did good things for my 1.6km line, Im looking forward to its return.
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Same - gained almost 6Mbps downstream and no issues, shame they removed it.
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Again when G.INP becomes active on the ECI cabinets and find your having problems with G.INP with a third party modem/router make sure the firmware is up to date before contacting your ISP to complain about G.INP !
Mine is mct approved already... imagine if the possible updated eci g.inp if it cones only worked with mct approved Modems... ::) - didn't the Asus dsl68u have issues back then..
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Was there any improvement to upload speed for anyone?
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Have watched both Huawei & ECI G.INP full roll-outs and Openreach seem to start the ball rolling in February for updates/upgrades it's almost like they have a 4 month window in the year to launch new tech on their network
why only 4 months in a year i wonder? hmmm
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No change in speed for me post-G.INP - I still have G.INP active on an ECI cabinet. What I have benefited from is a lower SNRM which I think happened after a cabinet outage overnight, but the line has been up ever since with the lower SNRM.
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why only 4 months in a year i wonder? hmmm
It could because they like doing this stuff in the spring time or it's the beginning of their financial year were they only have a certain amount of £ millions to spend during that year :-\
The more I think about it Openreach does not have much to do with the software inside the DSLAM this would be down to those suppliers of the two FTTC cabinet manufactures Huawei & ECI
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I think its worth asking those who had a speed increase if they were on fast path beforehand or not.
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I was keeping a spreadsheet of speed differences. Don't have it to hand for exact stats as it was on another PC - but I did post some excerpts in the eci g.inp thread at the time.
It was really only those who previously were interleaved (or more correctly - previously had INP) that got any real speed benefits from G.INP.
There were a few who weren't previously interleaved who may have gained a few kbps, but there were also a few that lost some speed.
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why only 4 months in a year i wonder? hmmm
Not sure if thats a red herring or not. The original projected rollout for g.inp on the eci cabs was something like July 2015 (after the Huawei's had been completed).
It was only after it was found to be problematic on the Huawei cabs with certain modems that the eci rollout got delayed to the next year.
There's been plenty of other technologies rolled out that haven't been restricted to the first 4 months.
It may be something to do with their projected roadpaths and plans they have in the pipeline for over the coming year which are planned many months in advance. The fix for the Huaweis was in effect more of a hack by tweaking with the DLM. It may have been more problematic to fix whatever was going wrong with the ECI's - we still dont know exactly what, but it seemed to be affecting the non MCT modems. They may not want to pull devs off some other on going project which could in turn delay that rollout.
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Not sure if thats a red herring or not. The original projected rollout for g.inp on the eci cabs was something like July 2015 (after the Huawei's had been completed).
It was only after it was found to be problematic on the Huawei cabs with certain modems that the eci rollout got delayed to the next year.
There's been plenty of other technologies rolled out that haven't been restricted to the first 4 months.
It may be something to do with their projected roadpaths and plans they have in the pipeline for over the coming year which are planned many months in advance. The fix for the Huaweis was in effect more of a hack by tweaking with the DLM. It may have been more problematic to fix whatever was going wrong with the ECI's - we still dont know exactly what, but it seemed to be affecting the non MCT modems. They may not want to pull devs off some other on going project which could in turn delay that rollout.
Aww, so if youre on fastpath theres not much difference with g.inp :( i assumed that, say for example uv had a very stable connection for a long time, DLM has pretty much perfected ur speed/stability and your getting the best speed possible while not having to many errors etc, surely g.inp would change this? or im just stupid and have no clue what im talking about lmao :P
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One of the first set of stats (http://forum.kitz.co.uk/index.php/topic,17195.msg315564.html#msg315564) had approximately a 4Mb increase with G.INP over fast path, with a further increase from using a HH5A.
The ECI cabinets didn't do G.INP on the upstream, so not change expected for the upstream.
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@Sunzz Basically G.INP is a form of error correction, and if I've remembered correctly only the packets that are not received correctly are retransmitted, whereas interleaving permanently transmits error correction information to allow damaged packets to be rebuilt so to speak. Because interleaving continuously transmits this information it takes up a chunk of bandwidth, thus reducing your effective speed, when replaced with G.inp the lines performs as if it is on fast path (no interleaving). Please note this is only my basic understanding so may be incorrect regarding terms etc.
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well openreach may also be rolling out 3db profiles this spring, so if g.inp is the difference between getting on that profile or not then it will also translate to a speed increase.
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I am on fast path have been for some time but always high ES per 24 hours, would hope it will reduce this should it come back.. hurry up April ;D
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Mine was rock solid and very fast with G.INP on, anything but when they turned it off.
I had big problems with the download speed as the DLM went nuts.
My down speed dropped from well over 80mbps to just 50 - 60mbps with several re-syncs per day.
After much arguing with customer services an engineer attended & did a DLM reset which vastly improved things.
it's now solid (but at only 74mbps) so I lost about 8% overall.
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Mine was rock solid and very fast with G.INP on, anything but when they turned it off.
I had big problems with the download speed as the DLM went nuts.
My down speed dropped from well over 80mbps to just 50 - 60mbps with several re-syncs per day.
After much arguing with customer services an engineer attended & did a DLM reset which vastly improved things.
it's now solid (but at only 74mbps) so I lost about 8% overall.
Youare very lucky, my ISP TT flatly refused to get my cap removed because they say I can only gain now 1000kbps despite having 70000kbps with G.INP on ECI. The cap went on to try to fix a bug which it did not but now they wont remove it. So when/if ECI gets G.INP back I'll have a fight all over again.
Stuart