As much as I hate to say this then I think your best chance of getting this removed is by lying about the amount of resyncs that you did a few months ago.
If he finds out that you inflicted the wrath of the DLM by your own accord then you could get charged.
I'm of the opinion that your ISP/Openreach shouldnt have to foot the bill for something of your own doing.
But conversely if Openreach made it easy for the ISP to reset and we didnt have to call out an engineer to do something that IMHO could be done remotely then theyve made a rod for their own back and more work for their engineers which could easily be remedied without the need for a call out.
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Sooo... bearing in mind that you did all those resyncs using your HH5 and then you bought your own Billion.
- Why dont you say that one day you had a shed load of reboots on the HH5 which evoked the DLM
- You went and bought your own router and since that date the line has been perfectly stable (which it has).
- Despite waiting for over 2 months, the DLM still has capped your line at 34999 and it wont go back to normal.
Now if I could access your stats from MDWS I could tell you exactly what you need to say next, but since I cant see your stats then I cant tell you what to say... but it would be something like.
- The line has been very stable at 34999 and had a surplus SNRM of {need what this figure was} and a maximum attainable of {need this figure}
- Knowing that your max attainable was more than 40k {need this figure} you thought they by upgrading to the 55/10 product that it would cause a DLM reset, plus get a bit more speed.
- However, despite being on the 55/10 the 35k cap has followed and you now also have interleaving and FEC, the overheads of which have decreased your max attainable further.
- You know your line is stable and that the Errored Seconds are very low, but you cannot get rid of the 35k cap.
Make sure that you impress on the engineer that you know the difference between sync speed and max attainable speed.
Make sure you read my points very carefully and are able to tell them to the engineer in a polite and unrushed manner.
If it helps, write down these facts on a piece of paper and hand it to him so he can read them in his own time to digest the relevant points.
- Finally offer tea and biccies.
Dont lie to him if youve been doing lots of syncs over the past few days - because he will be able to see this info.
If asked, hold your hands up and say it was you rebooting in the hope of picking up a new DLM profile.
I would keep the line as stable as possible over the next few days. DO NOT REBOOT. Let him see that the line is stable. He can check, so the less you do with your line over the next few days, the better.