Was today the day you got an Openreach visit on this ? If so, how’d it go ?
We have a winner
The engineer has just left. His Exfo tester was only getting 27Mbps at the master socket - which is 10Mbps worse than I was getting on the Cisco. That was good as it was way
below the handback threeshhold for an impacted line
After a lot of testing onsite he disappeared to the cabinet for a considerable time.
A port reset didn't achieve anything so he shifted to a new port, and bingo!
We're now getting 66Mbps down and 18.7Mbps up with the Fritz!Box. That's about what we should have been getting all along.
Now, the previous engineer allegedly did a port shift back in October 2016.
When I can do some more out of hours testing I'll see what sort of performance we get with the various different router/modem combinations.
Thank you for your help.