Some graphs would tell a thousand words.
I'm wondering if they've already seen the graphs (a suspect HLOG), hence BTOR visit, reterminated and new SSFP. New line test/DELT shows clean HLOG = thank you and good bye.
So if you still have a problem, it probably is congestion.
I don't think so, Plusnet booked the engineer on the basis of low MTBE (everything can be seen on Plusnet's ticket system, including their notes to the engineer).
The engineer didn't have any information to hand, he asked me why he was called out, and I handed him a printout of these notes and explained everything and he acted on that.
It was me who told him about the crimps behind the master socket put there by an engineer in 2012 (see below), only then did he have a look. He said they won't be causing any problem, but he would remove it as it was a potential point of failure for the future. A SSFP was already in place, he upgraded it to MK3. It hasn't fixed anything.
Previous Line Issue in 2012- In 2012 my line developed issues and focus was on the E-side, Tie Pairs and Lift and Shift so maybe these need attention now too?
- Previously, the line was flawless (we have owned property from new for 10 years). I have consulted my notes and emails from the time to refresh my memory.
- The line became very unstable, and DLM was driving especially the upload sync speeds right down, no engineer could properly fix it, they even added a RF3 filter by crimping in a new piece of wire to my feed.
- Eventually, the E-side was swapped by one engineer, the RF3 filter removed and swapped with a SSFP and DLM reset, he insisted this would definitely solve it. Straightaway something seemed wrong following the swap because the download sync was only 12Mbps @ 6dB and 21dB attenuation instead of the usual healthy 19Mbps, but he insisted he had selected the best E-side and everything was perfect and to give it a try.
- Strangely enough, it WAS stable for 3 months. But then the line suddenly collapsed, very unstable and syncing slower and slower, download down to 2Mbps but always at 6dB noise margin, I guess this means noisy line.
- An engineer came and said he would check the E-side after I explained. He came back and said he had re-terminated the E-side and Tie Pairs, and the modem straightaway synced at 19Mbps 6dB.
- Sync speeds and real download speeds remained like this, perfect.
- But the line kept dropping sync, many times a week.
- Many engineers came, they all said the same thing, need to try a lift and shift. I don’t know what happened, but this never got authorised by someone and it was getting nowhere.
- I then migrated from one BTw ISP to another BTw ISP - AAISP, who promised to get it sorted.
- We were all surprised that as soon as the migration was performed, the line became instantly stable, it stayed up for 2 months.
Any of you experts ever seen this before or know why it may have instantly cured it?- AAISP said there were a few errors reporting on the line, but nothing too worrying especially given the stability.
- I then migrated back to the previous BTw ISP. Line remained stable for months and months on end, no issues, DLM even selected 3dB target SNRM downstream...
- Line is still syncing fast, very stable, but other issues described now developed