Suggest you try your modem in adsl mode (8m) and adsl2 mode (16m) and then finally back to adsl2+ (24m)

Could be your physical line can not run in the fast mode and you are getting a lesser service due to noise etc.

In reply to a post by iand:

adsl2 mode (16m)

12 Meg!

But line is good for 20 Meg on ADSL2+ going from OP's attn.

In reply to a post by iand:

Suggest you try your modem in adsl mode (8m) and adsl2 mode (16m) and then finally back to adsl2+ (24m)

Could be your physical line can not run in the fast mode and you are getting a lesser service due to noise etc.

It worked fine for a few weeks after the upgrade at 3db SNR and 19 sync. The disconnects occur on all three modes. The last engineer to visit told me to leave it set to ADSL2+.

In reply to a post by XRaySpeX:

line is good for 20 Meg on ADSL2+ going from OP's attn.

Is it normal that the attenuation increases after an exchange upgrade? It was 19, but increased to 21.

Yes, going from ADSL or ADSL2 to ADSL2+ increases attn. by about 3dB.

Thanks. I was told that Plusnet would be speaking to 'their suppliers' today and that the ticket will be updated when they know anything.

Just a comment: Does this mean you have to have good telephone engineering knowledge to tackle these problems.?

Surely it is time someone brought out a gizmo that you plug into your line which gives the customer[mug] the power to get a definitive test that can be shown to the relevant [Open Reach?] company?

see my tribulations>>

Edited by deleted (Tue 20-May-14 11:10:14)

There is remote test kit and can be used to test without us the consumer plugging anything in and it is used a fair amount of the time, when retailers bother to give access to call centre/support staff

With a good telecommunications engineering knowledge and experience it is possible to identify faults from symptoms and some simple equipment.

There is equipment that can be plugged in - but it is not cheap and for it to provide a definitive statement about the line and potential faults it would need testing on a regular basis and calibration every year.

there is already enough diagnostic equipment at the exchange for automated testing and if required a technician can do a set of manual tests from the exchange too. There is potentially a cost for testing which needs to be met from somewhere.

They 'pinned' the SNR to 6db, which left me with a line that disconnected more frequently, but it went back up to 15db again anyway.