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naza
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 Posted: Thu Jul 10, 2008 8:10 am Post subject: Varying Attenuation |
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Just a problem that's started tonight. This is basically what
happened:
1) Connection drop out a weeks. Thought it was quite normal
2) Second drop out, coincidence possibly no change in speed.
3) Third Drop out with the drop outs become more frequent, this one
occur 4 mins after last sync.
4) Fourth Drop out, this one has a speed drop. from 2.7mbps to
500kbps, sudden jump in attenuation to 60.5 from 53db.
5) I re-sync it does not change very much. Phone is in use at this
time.
6) Connection just goes of, the router does not re-sync for at least
10mins
7) Router reconnects at normal speed and attenuation
 I don't notice but slowly the router keeps dropping connection and
reduces to a speed of 400kbps. High number of ES.
All of this happens through a period of time with lots of phone calls.
My guess is micro-filters, although the phone does not seem to have
any extra noise on it. No test at test socket yet, just too much
hassle right now. What else could it be?
Also If it is the filters I am thinking filtered faceplate, but there
is a slight issue. The phone wiring was put in the house when it was
brought. It runs from the NTE5 to a junction box. The cable is 3 pair
but at the junction box side the reduce cable clutter, 3 of the cables
are cut so they are too short to be used at the junction box. The B
leg of the phone cable running from the NTE5 to the junction box
became broken and I used the ring wire to replace the the B leg,
leaving no ring wire from the NTE5. It works all fine, buts that's
because the filter was regenerating the signal.
So if I put in a faceplate and centralise it all, then would the
phones still ring. |
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The Natural Philosopher
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| Posted: Thu Jul 10, 2008 11:03 am Post subject: Re: Varying Attenuation |
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naza wrote:
| Quote: |
Just a problem that's started tonight. This is basically what
happened:
1) Connection drop out a weeks. Thought it was quite normal
2) Second drop out, coincidence possibly no change in speed.
3) Third Drop out with the drop outs become more frequent, this one
occur 4 mins after last sync.
4) Fourth Drop out, this one has a speed drop. from 2.7mbps to
500kbps, sudden jump in attenuation to 60.5 from 53db.
5) I re-sync it does not change very much. Phone is in use at this
time.
6) Connection just goes of, the router does not re-sync for at least
10mins
7) Router reconnects at normal speed and attenuation
I don't notice but slowly the router keeps dropping connection and
reduces to a speed of 400kbps. High number of ES.
All of this happens through a period of time with lots of phone calls.
My guess is micro-filters, although the phone does not seem to have
any extra noise on it. No test at test socket yet, just too much
hassle right now. What else could it be?
Also If it is the filters I am thinking filtered faceplate, but there
is a slight issue. The phone wiring was put in the house when it was
brought. It runs from the NTE5 to a junction box. The cable is 3 pair
but at the junction box side the reduce cable clutter, 3 of the cables
are cut so they are too short to be used at the junction box. The B
leg of the phone cable running from the NTE5 to the junction box
became broken and I used the ring wire to replace the the B leg,
leaving no ring wire from the NTE5. It works all fine, buts that's
because the filter was regenerating the signal.
So if I put in a faceplate and centralise it all, then would the
phones still ring.
|
You can try it, but my guess is a line connection is going bad on you
upstream to the exchange. |
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kraftee
Guest
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| Posted: Thu Jul 10, 2008 11:03 am Post subject: Re: Varying Attenuation |
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naza wrote:
| Quote: |
Just a problem that's started tonight. This is basically what
happened:
1) Connection drop out a weeks. Thought it was quite normal
2) Second drop out, coincidence possibly no change in speed.
3) Third Drop out with the drop outs become more frequent, this one
occur 4 mins after last sync.
4) Fourth Drop out, this one has a speed drop. from 2.7mbps to
500kbps, sudden jump in attenuation to 60.5 from 53db.
5) I re-sync it does not change very much. Phone is in use at this
time.
6) Connection just goes of, the router does not re-sync for at least
10mins
7) Router reconnects at normal speed and attenuation
I don't notice but slowly the router keeps dropping connection
and reduces to a speed of 400kbps. High number of ES.
All of this happens through a period of time with lots of phone
calls. My guess is micro-filters, although the phone does not seem
to have any extra noise on it. No test at test socket yet, just too
much hassle right now. What else could it be?
Also If it is the filters I am thinking filtered faceplate, but
there is a slight issue. The phone wiring was put in the house when
it was brought. It runs from the NTE5 to a junction box. The cable
is 3 pair but at the junction box side the reduce cable clutter, 3
of the cables are cut so they are too short to be used at the
junction box. The B leg of the phone cable running from the NTE5 to
the junction box became broken and I used the ring wire to replace
the the B leg, leaving no ring wire from the NTE5. It works all
fine, buts that's because the filter was regenerating the signal.
So if I put in a faceplate and centralise it all, then would the
phones still ring.
|
Official answer would be not without the plug in filters, unofficial answer
is possibly depending on the phones you have got...
One thing, by using split pairs you could be allowing the cable (from your
NTE to that junction box) pick up more noise than it normally would, which
would affect your connection speeds & possibly your actual sync. If one of
the wires has brocken, why, if the cable has been damaged it is vry possible
that all the wires have been damaged, which could be the very thing which is
causing you problems |
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Guest
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| Posted: Thu Jul 10, 2008 11:03 am Post subject: Re: Varying Attenuation |
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| Quote: |
What else could it be?
|
Varying attenuation could be the result of a dry oxidised
joint in the BT line, a change of 7db might not affect
the phone, but could affect your BB.
Have you a drop wire off a pole, if so it may be
the source of the problem.
There are utilities to continuously log your
attenuation and SNR Signal Noise Ratio.
Useful if you can see a pattern, like long periods
of the lower attenuation figure, and short
periods of the higher figure, or the other way
around. |
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naza
Guest
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| Posted: Thu Jul 10, 2008 12:14 pm Post subject: Re: Varying Attenuation |
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Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins. |
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naza
Guest
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| Posted: Thu Jul 10, 2008 2:37 pm Post subject: Re: Varying Attenuation |
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On 10 Jul, 14:10, "Frank Wright" <privateaddress3...@mail4u.net>
wrote:
| Quote: |
"naza" <naza...@googlemail.com> wrote in message
news:9ed7c320-37c3-49e0-8e2d-728813e33b27@m36g2000hse.googlegroups.com...
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
Ah, but will he fix the fault?
|
It took him over an hour but he got it sorted. Cause is corroded
underground joints. He cut the corroded bit of and put the cables back
in the junction box, and line was returned to normal. |
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Frank Wright
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| Posted: Thu Jul 10, 2008 6:10 pm Post subject: Re: Varying Attenuation |
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"naza" <naza911@googlemail.com> wrote in message
news:9ed7c320-37c3-49e0-8e2d-728813e33b27@m36g2000hse.googlegroups.com...
| Quote: |
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
|
Ah, but will he fix the fault? |
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Klunk
Guest
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| Posted: Thu Jul 10, 2008 6:30 pm Post subject: Re: Varying Attenuation |
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On Thu, 10 Jul 2008 14:10:14 +0100, Frank Wright passed an empty day by
writing:
| Quote: |
"naza" <naza911@googlemail.com> wrote in message
news:9ed7c320-37c3-49e0-8e2d-728813e33b27@m36g2000hse.googlegroups.com...
Its BT's fault, tested at the test socket and it was on the other side.
They sent out an engineer and he is here right now. Playing around wit
the cables in the ground. Been here 30mins.
Ah, but will he fix the fault?
|
Sure he will ;-) Just don't be surprised if the neighbour has a similar
fault later on today - you'll probably see vans around for weeks now as
the fault moves around until someone *finally* fixes it properly ;-)
Ever the cynic, me.
--
begin oefixed_in_2005.exe |
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The Natural Philosopher
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| Posted: Thu Jul 10, 2008 6:32 pm Post subject: Re: Varying Attenuation |
|
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Frank Wright wrote:
| Quote: |
"naza" <naza911@googlemail.com> wrote in message
news:9ed7c320-37c3-49e0-8e2d-728813e33b27@m36g2000hse.googlegroups.com...
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
Ah, but will he fix the fault?
My experience is generally very positive *once BT get an engineer on the |
case*.
They have the kit, and most know how to use it. The worst is when an
underground cable is 'leaking;' and going faulty. The usual first stab
is to switch pairs: then they run out of good ones and start dragging
cables and splicing in ducts...
But I have to say subjectively, since broadband came along, crackly
voice lines have all but disappeared from the calls I make.;-) |
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Klunk
Guest
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| Posted: Thu Jul 10, 2008 10:42 pm Post subject: Re: Varying Attenuation |
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On Thu, 10 Jul 2008 07:37:22 -0700, naza passed an empty day by writing:
| Quote: |
On 10 Jul, 14:10, "Frank Wright" <privateaddress3...@mail4u.net> wrote:
"naza" <naza...@googlemail.com> wrote in message
news:9ed7c320-37c3-49e0-8e2d-728813e33b27@m36g2000hse.googlegroups.com...
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer  and he is here right now. Playing
around wit the  cables in the ground. Been here 30mins.
Ah, but will he fix the fault?
It took him over an hour but he got it sorted. Cause is corroded
underground joints. He cut the corroded bit of and put the cables back
in the junction box, and line was returned to normal.
|
Good job it's all positive earth init'. Imagine what the corrosion would
be like if it were negative earth {shudders}
--
begin oefixed_in_2005.exe |
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kraftee
Guest
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| Posted: Thu Jul 10, 2008 11:43 pm Post subject: Re: Varying Attenuation |
|
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naza wrote:
| Quote: |
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
|
Only another 90 to go then.. |
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m
Guest
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| Posted: Fri Jul 11, 2008 4:54 pm Post subject: Re: Varying Attenuation |
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kraftee wrote:
| Quote: |
naza wrote:
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
Only another 90 to go then..
Here's another one for you K! |
Mates phone went faulty but BB OK - typical one-leg fault!
Then 2 days later BB failed too.
Called out BT (meanwhile restoring slightly 'illegal' cable routeing to
NTE inside flat).
Hawk confirms faulty 15m away.
Follow pairs.
Dis at block on outside of the flats - VERY STRANGE!!
Get test from exchange - identify pair - restore - still one legged.
Find fault in joint in manhole (sorry non-pc - Footway box)
Note new install on another flat (using second hand cables).
Could it POSSIBLY be that a OR eng had tried to find a spare pair?
nicked his, found it faulty and just left it off?
Heaven forefend!
Mike |
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George Weston
Guest
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| Posted: Fri Jul 11, 2008 7:38 pm Post subject: Re: Varying Attenuation |
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"m" <mikej@tiscali.co.uk> wrote in message
news:487749F9.3090801@tiscali.co.uk...
| Quote: |
kraftee wrote:
naza wrote:
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
Only another 90 to go then..
Here's another one for you K!
Mates phone went faulty but BB OK - typical one-leg fault!
Then 2 days later BB failed too.
Called out BT (meanwhile restoring slightly 'illegal' cable routeing to
NTE inside flat).
Hawk confirms faulty 15m away.
Follow pairs.
Dis at block on outside of the flats - VERY STRANGE!!
Get test from exchange - identify pair - restore - still one legged.
Find fault in joint in manhole (sorry non-pc - Footway box)
Note new install on another flat (using second hand cables).
Could it POSSIBLY be that a OR eng had tried to find a spare pair? nicked
his, found it faulty and just left it off?
Heaven forefend!
|
As if anyone would....
;-(
George |
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naza
Guest
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| Posted: Fri Jul 11, 2008 9:57 pm Post subject: Re: Varying Attenuation |
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What actually happens in the man holes. There is quite a few in my
area. I thought PCP's was where the length from the exchange stopped
at. |
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Klunk
Guest
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| Posted: Fri Jul 11, 2008 10:04 pm Post subject: Re: Varying Attenuation |
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|
On Fri, 11 Jul 2008 15:38:40 +0100, George Weston passed an empty day by
writing:
| Quote: |
"m" <mikej@tiscali.co.uk> wrote in message
news:487749F9.3090801@tiscali.co.uk...
kraftee wrote:
naza wrote:
Its BT's fault, tested at the test socket and it was on the other
side. They sent out an engineer and he is here right now. Playing
around wit the cables in the ground. Been here 30mins.
Only another 90 to go then..
Here's another one for you K!
Mates phone went faulty but BB OK - typical one-leg fault! Then 2 days
later BB failed too.
Called out BT (meanwhile restoring slightly 'illegal' cable routeing to
NTE inside flat).
Hawk confirms faulty 15m away.
Follow pairs.
Dis at block on outside of the flats - VERY STRANGE!! Get test from
exchange - identify pair - restore - still one legged. Find fault in
joint in manhole (sorry non-pc - Footway box) Note new install on
another flat (using second hand cables). Could it POSSIBLY be that a OR
eng had tried to find a spare pair? nicked his, found it faulty and
just left it off?
Heaven forefend!
As if anyone would....
;-(
George
|
When you only pay £23k a year for 36.5 hours, that is what you get ;-)
--
begin oefixed_in_2005.exe |
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