Hi nasserrh,
Sorry to hear that you've seen such a speed reduction as part of the recent phone fault. You're correct in thinking that an engineer visit to the exchange/cabinet side of the network is required in order to place the DLM back into the new installation mode but I'm afraid that this isn't something that we have the option of requesting at present.
This is normally the final step carried out as part of a broadband fault resolution which hasn't taken place in this instance with it being raised as a phone fault. Given this we have a couple of options, we can either leave the connection and allow the DLM to move the speeds back up to where they should be once it can confirm the line is now looking issue free or we can see where the fault you have open with us ends up.
Ideally, this will be picked up as part of the fault you have open so I would await the ticket being updated by the faults team to see what the outcome is and if there is no mention of the speed reduction being fixed, I would let them know about this and see what can be raised with the supplier as part of the ongoing fault resolution.
On a side note with regards to DLM resets, we are awaiting the development of a tool by the supplier that will allow us to do this remotely without the need for an engineer however this could be a little time before it's completed and made publicly available.
