Kitz Forum
Broadband Related => FTTC and FTTP Issues => Topic started by: Berrick on January 23, 2014, 12:10:33 PM
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Hopefully I picked the right area for this post?
I have been monitoring the U/D speeds of my 40/20 FTTC using a HH4 (might be a HH5 how do I tell??) and even though I'm still with my old enemy Beattie I have to admit so far they have been consistently good, 39Mbps/17Mbps.
I needed to test a firewall for a client so installed a non hacked ECI router and connected it to pfSense (the F/w for those how don't know) and carried out a few speed tests. I am consistently see the download speed are around 10Mbps less then with the HH4 ?
I'm pretty confident the hardware running pfSense is not the cause, just a basic setup. Its almost as if there is a limiter in place so here I am asking my peers if there is anything in the ECI which could be limiting the speed/ is the MTU being messed with in the router?
FYI, if I go back to the HH4 i get the missing bandwidth back
Look forward to your replies
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Am not clever enough to be able to help you out with the bandwidth difference. All I can tell you is that the HH5 (which has the built-in modem) has a thin blue strip running along the front of the Hub. The HH4 doesn't. :)
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Cheers Black Sheep :) Its a HH5 then.....
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:)
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They don't do a 40/20 package do they? It's 40/2, 40/10 or 80/20.
With 17 up I would have thought your down would be a lot higher, seems a bit strange to me.
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non hacked ECI router
Without knowing the actual sync speed from the modem it may be difficult to track down. Assuming it wasnt just a bad sync, other possible reasons I can think are
1) modem -v- dslam chipset compatibility. Saying that though, the Huawei modem can sometimes work better on some lines even though the dslam is ECI. I could be wrong, but Ive yet to hear of an ECI modem that performed better on a Huawei dslam than the Huawei mode. In fairness there would be few lines with a hacked ECI to be able to say for sure.
2) psd masks/frequency banding profiles. Without doubt Id expect a HH5 to be using the latest BT banding profiles. The ECI modem may not. Its possible that particular line may work better with the newer banding profiles. From observations & feedback on this forum it seems to be the shorter lines who are saying the new profile & firmware is less beneficial. Im guessing its a medium length line from info supplied.
I agree with ronski if its syncing at 17Mbps up, then its more likely to be an 80/20 line? If you are seeing 39Mbps on speedtests, that seems just a tad too high for 40Mbps after allowing for overheads.
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I guess it is a 80/20 then. I'm a fair way from the exchange.
So how do I know which dslam my exchange uses and is it possible to "install" a new banding profile. I have bothe ECI and Huawei I can play with
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It doesn't matter how far from the Exchange you are, it matters how far from the FTTC Cabinet you are. Also, I agree with Ronski, if your US is synching at 17Meg, your DS should be a lot higher than 39Meg, in my experience.
So I would humbly suggest you are not too far from the actual FTTC Cabinet ? :)
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Indeed, you ma be able to identify which type of dslam you are connected via, by finding out which cab you are connected to (https://www.btwholesale.com/includes/adsl/main.html) and from its shape and size.
Generally speaking the ECIs are smaller with an inverted 'v' top, but this isnt true in all cases. Someone may be able to supply photos of all the different types, or alternatively if you want to post a photo of your cab then we may be able to identify which type it is for you.
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If he has a hacked HG612, then he can find out what dslam it is via the band plans.
Post this section and somebody better informed than me will tell you (BE1)
Discovery Phase (Initial) Band Plan
US: (6,31) (882,1193) (1984,2770)
DS: (33,857) (1218,1959) (2795,4083)
I'm on an ECI cab, and my modem has updated firmware.
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This is for my connection to a Huawei DSLAM, updated HG612 firmware:-
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
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For comparison
ECI cab, Huawei modem with BTAgent disabled (old f/w)
Discovery Phase (Initial) Band Plan
US: (0,95) (880,1195) (1984,2771)
DS: (32,859) (1216,1959) (2792,4083)
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I know where my cab is Tis but a stone throw away. I will try and take a wonder.
It begs the question though how close to the cab to get 80/20?
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Depends on various factors, namely cables size. My experience is, between 300-400mtrs will generally see the full synch speeds. (Before DLM kicks in ...... thought I'd get in first ;) ).
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Sorry, forgot to add, if you post your Exchange name and the number that is on the Cab, I should be able to give you a reasonable approximation as to the distance. The cables do not always 'feed' the way you might imagine, sometimes adding a good few hundred mtrs more than expected. :)
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@ BS,
In the little patch that I trundle my wheelbarrow around, I only know of one 400 m line where the JDSU TDR trace resembles the worst white knuckle ride I can imagine.
An exceedingly good Openreach engineer looked decidedly sheepish (Sorry BS !) saying that each of many cable joins showed the normal distance-based degradation.
That EU played merry hell with BT accounts and was reimbursed but had to accept the standard 10 / 40 contract instead.
Otherwise BS's 400 m rule seems spot on.
Kind regards,
Walter
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I am 200m from my cabinet with a guestimate 350m actual cable length, did start out with an easy 80 sync but now down to 60. Although I have been told BT have found a network fault (which was supposed to be fixed 2 days ago) and havent heard anything since about that fault, but the fault isnt closed.