REIN is very difficult to pinpoint using 612Khz as most items with mains switching and transformers around the house give out that buzzing noise when the Radio is close to 1 -2 meter of the source all REIN is caused by the the Mains 240v AC
That's what I found. According to my radio just about everything in the house seemed to radiate something at that frequency, for example the fluorescent lights and LEDs in the garage were just about deafening at close range. What doesn't seem to be clear is how to link that noise with whether it is or is not affecting the DSL other than by switching each device off and watching error rates and SNR (and of course you could do that anyway without the prior AM radio checks).
It's struck me from my single experience with REIN investigation is that it's sometimes used by both ISP and OR as a convenience to avoid having to track down the real fault.
Your first paragraph is spot-on. Your second couldn't be further from the truth.
Because REIN faulting is effectively a totally free service that Openreach very kindly
offer, there has to be a very good reason to have a case raised. For information purposes, the ISP can't have a case raised, only the OR Engineer, and as mooted the pro-forma to this being done is pretty involved.
On both ADSL and VDSL, the engineer has to
change the E-side, D-side and carry out a 'Lift & Shift'. As well as ensuring the internal wiring is up to par and a SSFP installed. Then, he/she has to ring the Openreach Diagnostic Centre of Excellence
(if it is a BT Classic circuit) to speak with the REIN Team
, who will trawl through historical data pretty much like the guys on MDWS do here, to try and determine if REIN is the cause.
The engineer is also sometimes expected to drive around the immediate vicinity with his van radio on 612kHz for the REIN team to listen to.
If it is a LLU circuit, the engineer has to speak with the ISP's Tier 2 service who do the same as OR's DCoE, and they then have to e-mail a data-pack to the REIN Team, who go over it themselves to decide whether a REIN Case is worthy of raising ??
This is not aimed at you aesmith in any way, shape or form. Please don't take it as such ............. but this is an example of how naïve Joe Public can be when it comes down to how Openreach operate behind the scenes.