Line Fault Developing?

Hi guys,

I hope you're well.

Yesterday, when the phone rang, the upstream SNRM plunged and many errors were recorded. I am led to believe that a sharp decrease in upstream SNRM coinciding with an incoming phone call is the start of a developing HR/Open/Semi-conductive fault. I have also noticed that the upstream SNRM can be wild when it's blowing a hoolie (potentially a tree is hitting the cable somewhere?)

Here's a screenshot of the SNRM graph over the past 24 hours. The spike is shown towards the far left off the graph: http://prntscr.com/pg0pvh

What is strange is the phone rang again earlier and nothing happened, and I cannot seem to replicate this on an outgoing call and the line is clear, but I know that these type of faults can start off intermittent. Is this something I should monitor?

The line hasn't lost sync recently, and the attenuation has remained fairly consistent, if gradually increasing (obviously not a good sign).

I'm probably making a big deal out of this, though just want to see what people's opinions are on this (though this looks like it's external as I've had the phone and router plugged into the test socket for ages).

Thanks,

Will

Time then to systematically ring the phone number and see if the spiking can be reproduced.

A single event that is recovered from does not indicate a fault.

Yeah, the 2nd time the phone rang, it didn't occur. I assume crazy SNRM fluctuations and errors when it's windy kind of proves something isn't right though.

Depends on lots of variables, e.g. an overhead cable moving around in the wind may pick up noise sources differently since it is in a bit of different RF space for a short period.

Or could be someone at that time switched on something that caused an RF noise burst e.g. brake applied to a small wind turbine that was reaching max velocity or similar other random event.

Hmm, that's an interesting thought. Well, it always coincides with wind, and also when it rains the SNRM also drops a bit.

Might be just the extra strain placed on the cable, until it fails or produces a very regular and observable error no one is going to run out and replace it.

Hmm, well Openreach replaced part of the run only last January, but once again it goes straight through a load of trees!