I had my FTTC connection installed on Monday - it was done by a contractor, Quinn something or other. The installer did not seem very competent.
I was under the impression that most of the time the installer will jumper the pair in the PCP then come to your house. Mine came to my house first to put a tone tracer on my line "No way can I find your line in all those pairs"
It isn't the normal way, but it does happen - and is the standard way of finding a pair if it really is hard to find... and they can be sometimes.
20 minutes later he comes back. Installs Openreach modem, leaving it on the floor. Attempts to do a call back ( I assume to get some line info?) this fails and no further attempt is made. Modem is plugged in "if it syncs its fine" i'm told.
Not ideal, but it is getting close to what is about to happen live, where you get to install the modem for yourself.
By itself, it doesn't mean you are going to suffer any extra problems. I've had engineer's install FTTC twice, and while they *have* gone through the test process, they haven't actually gone and changed anything anywhere (save the original switch at the cabinet)..
The phone line in this house hasn't been used for years and there is a junction box in the cubby hole out front that looks quite old. None of this was checked and no line tests were carried out. Can someone tell me if they should have been?
So was this part of installation of the phone too? I'm surprised that no-one tested the line, and that it had the right number. Perhaps that doesn't happen so much any more - others will have to comment.
Am I justified in being rather unimpressed?
Certainly more unimpressed than impressed.
I was estimated to get 46meg. Initally the modem synced at around this mark ~44000. Within 24 hours the sync had changed to 44800. Less than another 24 hours it has dropped back to ~44000
Such small changes don't matter too much, but were the resync's caused by you manually doing something? Or automatically?
Otherwise, you'd normally expect there to be little change over the first 48 hours. Until...
and today its now synced at:
Downstream rate = 41677 Kbps
DLM will usually only intervene after 48 hours, so this is reasonable timing. You've lost less than 10%, so it isn't too bad.
My attainable rate has started at 45800, went down to ~40,100 and s back up now at 48372.
The first figure matches your original speed. Ironically, the attainable rate seems to go up a little when DLM adds interleaving & FEC - by about the same amount as the actual speed drops by. No problem with the third figure.
The drop of attainable to 40M is a bit more worrying, indicating some noise on the line that wasn't there at sync time (as the sync has never gone that low). The corresponding good news is that you must have stayed sync'd at the time.
DLM seems to have added some INP and delay where as before it was 0
INP: 3.00 0.00
PER: 2.54 8.36
delay: 8.00 0.00
OR: 75.56 30.61
INP of 3 and a delay of 8ms is a fairly common setting that DLM uses to turn on interleaving and FEC - treat it as a "standard level", and we've seen worse.
Also my FEC has gone up a lot - is this anything to worry about?
Yes - the FEC counter starts running as soon as DLM turns on interleaving alongside FEC.
This alone isn't a worry, but I understand your concern.
The question is what is happening to the CRC counter (or the OHFErr counter; same thing).
A level of 35 CRC in 24 hours isn't bad. If that is maintained, the level of interleaving/FEC isn't going to be made any worse.
The level of FEC is high enough, so DLM isn't going to be turning the interleaving off.
Am I worrying over nothing here?
How long has the cabinet been there, and orderable? If it has been there a while, then I'd be less worried. If it is new, and you're one of the first subscribers, I'd be more worried.
But either way, there isn't much you can do if things stay as they are, speed-wise, and everything stays stable.
If those resyncs were automatic, and if you continue to see more of them, and the speed jumps around some, then I'd report a fault - and mention the low standard of install.