Kitz Forum
Broadband Related => Telephony Wiring + Equipment => Topic started by: kezzaman on July 11, 2015, 02:21:33 PM
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Hey guys,
I was hoping someone could answer this please.
After my phone line leaves my house does it join up with my neighbours phone lines and we all share a line back to the exchange (im connected directly to the exchange),
Or do we all have our own lines independently going to the exchange?
thx
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You each have your own pair of wires, but they'll all be brought together in one multi-core cable.
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Thank you.
A follow up if i may?
I have noise on my phone line when connected to the test socket, any recomendations on what to do about fixing that?
Cheers
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I have noise on my phone line when connected to the test socket, any recomendations on what to do about fixing that?
If that noise is noticeable when all other equipment (modem/router, microfilters, etc) is disconnected and you are just using a wired telephone directly connected into the test socket, then you should contact your telephony service provider (the entity to which you pay for telephone calls) and report an audibly noisy line. (Do not make any mention about your broadband service.)
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I have noise on my phone line when connected to the test socket, any recomendations on what to do about fixing that?
If that noise is noticeable when all other equipment (modem/router, microfilters, etc) is disconnected and you are just using a wired telephone directly connected into the test socket, then you should contact your telephony service provider (the entity to which you pay for telephone calls) and report an audibly noisy line. (Do not make any mention about your broadband service.)
Thx
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actually :D
Before i leave it at that, why shouldnt i mention the broadband service?
(http://static.fjcdn.com/comments/I+need+more+_ba17c358dc45d9177b1c9714ea62ceb7.jpg)
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The average CS representative of the average ISP/CP is bound to get the "wrong end of the stick" and insist that you do "this, that and the other", exactly as written in the script, from which they would be reading! ::)
If you report that you have performed a quiet line test, with a wired telephone connected directly into the "test socket" at the NTE5/A, and the result is significant audible noise, then you have covered everything -- leaving the ISP/CP with no "wriggle room"! :)
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... and there is a Universal Service Obligation for telephony faults, but not for broadband faults.
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I see ;)
thx again
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Actually, thinking about it, I can see the potential for the ISP/CP to attempt to "squirm". So perhaps you should report that you have performed the test twice, using two separate telephones, and the results are identical -- significant audible noise was noted in each case. :D
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Actually, thinking about it, I can see the potential for the ISP/CP to attempt to "squirm". So perhaps you should report that you have performed the test twice, using two separate telephones, and the results are identical -- significant audible noise was noted in each case. :D
also that you have tested the telephone equipment at someone else's house, where it operates without noise. :P
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also that you have tested the telephone equipment at someone else's house, where it operates without noise. :P
:thumbs:
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Why do i get US errored seconds when the phones rings the SNRM on both does not change ?
And what is that plate called on the NTe5 where the phone plug goes in ?
You have the NTE5 then a SSFP and then a plate were the telephone socket plugs in that's the one in my question.
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Why do i get US errored seconds when the phones rings the SNRM on both does not change ?
Because your line is special? Because there is a latent HR fault developing? :-\ I really don't have an answer to those queries, sorry.
And what is that plate called on the NTe5 where the phone plug goes in ?
You have the NTE5 then a SSFP and then a plate were the telephone socket plugs in that's the one in my question.
I have always called it "the lower front face-plate". I suppose one could call it "the end-user's wiring disconnection unit"? :-\
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Because there is a latent HR fault developing
As Kezzaman was wondering how the phone can effect your broadband as the journey for me the phone comes from the our small exchange to PCP cabinet and our Broadband (FTTC) comes from a much larger exchange but both journeys end at the PCP cabinet and then are merged together as two pairs of wires to my premises.
It's the phone when it rings that interferes with the broadband there is no ringwire connected so where could the HR fault be PCP cab, telecom exchange or much closer to premises ?
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It's the phone when it rings that interferes with the broadband there is no ringwire connected so where could the HR fault be PCP cab, telecom exchange or much closer to premises ?
The developing, latent, HR fault would be somewhere between the PCP and the NTE5/A. In other words, somewhere in the D-side cabling.
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Well there is 1000 meters on the D/side so maybe will replace the NTE5/A lower front face-plate as there is filtering circuitry on this plate.
What i did was to remove phone plug from lower face-plate and rang my number and US errored seconds showed up in DSL stats then i removed the lower face-plate and rang my number and no US errored seconds showed up :-\
And had a look inside see image below
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Well there is 1000 meters on the D/side so maybe will replace the NTE5/A lower front face-plate as there is filtering circuitry on this plate.
What i did was to remove phone plug from lower face-plate and rang my number and US errored seconds showed up in DSL stats then i removed the lower face-plate and rang my number and no US errored seconds showed up :-\
And had a look inside see image below
That image is interesting. With the face-plate dismantled, you should be able to trace out the circuit. It does not appear to be particularly complex. ;)
I have attached, below, the second page of a two page Pressac (http://www.pressac.com/) data sheet for the NTE5/A. Back when that data sheet was created, the only filtering present was a 22 mH choke in series with the "bell wire".
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I seem to recall in the dim and distant past, that although the circuitry remains the same within the NTE, the boffins decided to redesign the solder-tracks as a result of incoming ringing voltage creating errors on the DSL side of the circuit ???
I have definitely seen the older-style soldering tracks where T2,T3 and T5 run in parallel for most of their short journey, whereas the later versions see the 'Bell-wire' (T3) track being completely detached from the T2 and T5 tracks.
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When i removed the Lower face-plate i cleaned all the terminal points (scaped the metal pins out and in) have not made a phone call to my landline since replacing the lower face-plate.
Edit Lower face-plate re-installed and rang are number 10 CRC's and 4 errored seconds in the Upstream showed up straight away on DSLstats at 19:12 you can have a look on My MDWS :(
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Edit Lower face-plate re-installed and rang are number 10 CRC's and 4 errored seconds in the Upstream showed up straight away on DSLstats at 19:12 you can have a look on My MDWS :(
Yes, I have seen the CRC spike. You could trace the circuit on the lower face-plate and then, by de-soldering or cutting, remove the bell wire pin of the plug part . . . :-\
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Edit Lower face-plate re-installed and rang are number 10 CRC's and 4 errored seconds in the Upstream showed up straight away on DSLstats at 19:12 you can have a look on My MDWS :(
Yes, I have seen the CRC spike. You could trace the circuit on the lower face-plate and then, by de-soldering or cutting, remove the bell wire pin of the plug part . . . :-\
Well lets see my lower front plate does not have a BT logo like this image below but it does a have the UK Reg number and looks the same.
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I can confirm that the physical construction, as shown in your latest image (Lower face-plate 2.PNG), corresponds with the printed circuit wiring as shown in the earlier image (Lower face-plate.jpg). :)
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I can confirm that the physical construction, as shown in your latest image (Lower face-plate 2.PNG), corresponds with the printed circuit wiring as shown in the earlier image (Lower face-plate.jpg). :)
Well B*CAT with the lower front-plate removed i inserted the plug from telephone cable direct into the SSFP and made a call to my landline number the CRC/errored seconds showed up.
Project History
1. phone cable disconnected from lower front-plate = errored seconds when phone rings
2. lower front-plate removed & phone cable disconnected = no errored seconds when phone rings
3. lower front-plate removed & phone cable connected to SSFP = errored seconds
to me it looks like an SSFP issue rather than the lower front-plate i just don't know any thought's are very welcome.
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:hmm: That is a bit of a puzzle. ???
Does the telephone you have used in the experiments need a connection via the "bell wire" to signal an incoming call?
I am still pondering if it is some form of stray coupling from the mid-point junction of the series resistor-capacitor shunt across the pair that is "causing the damage".
I think we are going to need the thoughts of others . . . :-\