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Author Topic: Need advice, possible fault  (Read 2004 times)

Ixel

  • Kitizen
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  • Posts: 1005
Re: Need advice, possible fault
« Reply #45 on: July 11, 2018, 02:24:51 PM »

Ugh, I thought the problem was gone but I had a couple of loss of syncs this afternoon again, not too long after emailing AAISP to request a DLM reset from TTB (which is pointless if there's still a fault). At one point my connection synced with normal downstream speed but only 0.5mbps upstream. I've changed the modem cable from a 'high quality' cable to a cheapy spare flat RJ11 cable, but I highly doubt that's the reason.

Prior to that I did a line test on CIX twice, first time it came back 'Test Inconclusive - Further Diagnostics Required - raise Trouble Report with OR' with a fault location 'DT' and asking me to do another test. Second time it says 'Line test OK. Dial tone OK'. I'm not sure what I can do at this point as I fear this is an intermittent fault that's just playing tricks with me. I'm waiting to see what AA suggest next.

This is what my connection looked like when it resynced during the problem again, until I resynced it with a change of RJ11 cable:
https://imgur.com/a/sKhShb9

This is what my connection looked like after I resynced it again with a change of RJ11 cable, and generally what it looks like prior to the problem occurring (other than DLM banding and interleaving):
https://imgur.com/a/IQke66h

Line test results:


On one final note, I did notice last night that my BT handsets lit up and for a second said "line cord error" (aka no phone line) then went back to normal. Broadband however seemed unaffected by that brief blip.

I hope this fault isn't going to be a complicated one to fix.

EDIT: AAISP have got back to me and said it does look like there's a fault on the copper side, and could try forcing an engineer out. I don't know if this would be an SFI engineer but I assume it may well be. I'm waiting to hear for an appointment. Fingers crossed they will find something conclusive and it won't require multiple engineer callouts before something is eventually found (like before at my old address).

This reminds me of my old address all over again :D, just perhaps in a bit of a different way this time.
« Last Edit: July 11, 2018, 03:28:57 PM by Ixel »
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Ixel

  • Kitizen
  • ****
  • Posts: 1005
Re: Need advice, possible fault
« Reply #46 on: July 12, 2018, 05:01:53 PM »

An engineer is coming out tomorrow afternoon, presumably an SFI engineer as AAISP requested it via TTB and only the FTTC is with them (not the line rental). Fingers crossed they can identify a fault and not leave it as "right when tested". Others in the house keep telling me every so often that some phone calls appear to be doing some unusual things (crackling or periodic faint/disappearing audio) and it seems to happen more so in the afternoon apparently. Oddly I don't notice it most times when trying the QLT.

DLM also intervened again today by what looks like increasing the INP/delay to possibly INP 8 / 16ms on the downstream while maintaining the upstream at INP 4 / delay 8ms. SNRM/attainable rate decreases a little whenever a phone call is made or received, approximately 0.5Mbps downstream and 1.0Mbps upstream is lost until the phone call has ended.

Going by my current DSL estimate I'm now also below the impacted low estimate for the downstream by a few megabits and very close to the impacted handback threshold. Upstream is also below the impacted low estimate by roughly a megabit.

I'll have biscuits and a cappuccino on standby (proper coffee beans as I have a superb coffee machine hehe, just like it's made at a coffee shop) :).
« Last Edit: July 12, 2018, 05:05:05 PM by Ixel »
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