Kitz Forum
Broadband Related => Telephony Wiring + Equipment => Topic started by: PeterOliver on November 13, 2008, 05:44:29 PM
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Hi there,
I have read the thread here (http://forum.kitz.co.uk/index.php?topic=3441.0) with interest as I have been having exactly the same symptoms as the original poster, and didn't know why. Upon further inspection it seems that I too have an RF2 box. So the simple solution should be to ring up my ISP, O2, and get them to send an engineer out, right? I have done that, and they refuse to, saying it's not their problem. BT won't do anything either because it doesn't affect voice. The only option I can think of to fix it is to rewire it myself and bypass the RF2. So my question is... how? It looks like it shouldn't be too hard, just moving a few wires. I would be very grateful if you told me what to move to where so I can get my internet connection up to speed! There is a picture attached. The white wire on the right of the picture leads to nothing, it finishes just out of the picture. The white wire on the left is the cable to my master socket and the black wire is the incoming phone line.
Thanks for your help!
[attachment deleted by admin]
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ring up my ISP, O2, and get them to send an engineer out, right? I have done that, and they refuse to, saying it's not their problem.
It is their problem, threaten them with OFCOM. "broadband incompatible equipment on the line".
They need to ask BT Openreach to remove/replace it - which will be free.
No doubt Kitz will be along to clarify.....
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ring up my ISP, O2, and get them to send an engineer out, right? I have done that, and they refuse to, saying it's not their problem.
It is their problem, threaten them with OFCOM. "broadband incompatible equipment on the line".
They need to ask BT Openreach to remove/replace it - which will be free.
No doubt Kitz will be along to clarify.....
They told me my speeds were 'good enough' as they supply 'up to' 8 meg. I tried to argue but they were having none of it.
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That indeed does look like an RF2 :/
>> BT won't do anything either because it doesn't affect voice.
No they wont because it doesnt :(
>> So the simple solution should be to ring up my ISP, O2, and get them to send an engineer out, right?
That is the correct way yes.. and it is O2's responsibility as you have an incompatible product on your line for adsl. We've come across this problem before that often ISP support doesnt know what an RF2 is and how it can actually filter out frequencies needed for adsl to work properly. If they request removal via BT Wholesale it should be done free of charge by BT Openreach. They should mark on their request that there is an RF2 on the line.
Unfortunately the only legal way it can be done is by a BT Openreach engineer and therefore the site cannot condone you doing this yourself.
The Openreach engineer has a couple of options, he can replace the RF2 with an RF3, or he can by pass the RF filter..
.. to do this he would likely either reterminate the drop wire into the white IDCs' or looking at your pic, possibly take the wires from the IDCs (where the white phone cable connects) into the grey screw connectors, so that the inductors are bypassed.
Both the IDCs and screw connectors should be labelled AB so he'd need to make sure that the correct wires on the IDC's go to the right bits in the screw terminals.
Whilst some people have done this themselves, we do not condone this action, and the above is for information only. I cannot stress enough that the RF2 is BT's property and any rewiring needs to be done by a qualified BT engineer.
[edited to add]
Please note I am not a trained telephone engineer.
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Thanks Kitz, I'm sure the information you gave will prove very useful to an engineer!
Magically, my broadband sped up this evening!
Before:
Uptime: 0 days, 0:11:06
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 997 / 2,494
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.0 / 18.5
Line Attenuation (Up/Down) [dB]: 21.0 / 41.5
SN Margin (Up/Down) [dB]: 6.5 / 6.5
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 0 / 0
Loss of Signal (Local/Remote): 0 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 0 / 0
FEC Errors (Up/Down): 0 / 1,329
CRC Errors (Up/Down): 0 / 14
HEC Errors (Up/Down): 4,260 / 12
After:
Uptime: 0 days, 0:04:53
DSL Type: G.992.5 annex A
Bandwidth (Up/Down) [kbps/kbps]: 1,308 / 8,187
Data Transferred (Sent/Received) [kB/kB]: 0.00 / 0.00
Output Power (Up/Down) [dBm]: 12.0 / 18.5
Line Attenuation (Up/Down) [dB]: 9.5 / 20.5
SN Margin (Up/Down) [dB]: 7.5 / 13.5
Vendor ID (Local/Remote): TMMB / BDCM
Loss of Framing (Local/Remote): 30 / 0
Loss of Signal (Local/Remote): 9 / 0
Loss of Power (Local/Remote): 0 / 0
Loss of Link (Remote): 0
Error Seconds (Local/Remote): 6 / 0
FEC Errors (Up/Down): 0 / 13
CRC Errors (Up/Down): 0 / 0
HEC Errors (Up/Down): 913 / 0
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Are you on the O2 8meg package, because that line will go a LOT faster. 8)
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Yeah I'm on the 8meg package - there was no point paying more when I was only getting 2.5! Might upgrade to 16 now though, it's only £2.50 a month more...
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Thanks Kitz, I'm sure the information you gave will prove very useful to an engineer!
As Ezzer would say - 'whistles innocently'.
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Might upgrade to 16 now
It'll probably go faster than that. ;)
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Decrease of 21.5dB attenuation and a very nice increase of speed. Should do the 16Mb quite nicely...
and as HP pointed out, if your line is in good condition, it shouldnt fall that far short of 20Mb.
You could always upgrade to the 16Mb, then see how much spare you have.
Fantastic Result :dance:
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There must have been an issue with your wiring as you can see the attenuation between the two is different:-
Before:-
Line Attenuation (Up/Down) [dB]: 21.0 / 41.5
After:-
Line Attenuation (Up/Down) [dB]: 9.5 / 20.5
Second one is more like it ;D
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There must have been an issue with your wiring as you can see the attenuation between the two is different:-
Yes indeed there was... I wonder how that got fixed :shrug2:
>:D
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Once again thanks a lot, this forum and the info on the site has been really useful! Much appreciated!
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Youre very welcome :)
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There must have been an issue with your wiring
;D ;D ;D ;D ;D ;D
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There must have been an issue with your wiring
;D ;D ;D ;D ;D ;D
But better still was Yes indeed there was... I wonder how that got fixed
:angel: :angel: :angel::lol: :lol: :lol:
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only just looked at this string, thats an rf2 alright, funny enough i finaly got round to compairing the attenuation added by an rf2 whilst testing a dsl signal at the exchange yesterday, turned out to be 37.5db I would replace an rf2 with an rf3 as I wouldn;t nessasaraly know why the rf was fitted in the first place and if the interference source still there. by-passing the coils by terminating the drop wire into the idc (white connectors) would solve the rf issue as far as dsl is concerned.
the only other thing about your piccy is the green/black second pair on the drop wire are "coiled back". that is coiled around the cable for neatness. This is an old tidy practice but dates back before data bit rate transmission to todays speeds and now a no-no. I would suggest carefully un coil them from around the cable. It dosn't usually cause a problem but it can leave you more venerable to noise issues and if done enough at both ends can cause "reflections" which can crop up in the error rate.
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the only other thing about your piccy is the green/black second pair on the drop wire are "coiled back". that is coiled around the cable for neatness. This is an old neat practice but dayes back before data bit rate transmission to todays speeds and now a no-no.
Interesting (to me as a non-comms expert anyway!) Thanks for yet another little gem of info :)