Speeds are good but errors look high. 3 LoS (your discons) & about 1 ES (Error Sec) every 39 secs.
Do you have any phone extension sockets?
Do Quiet Line Test, dial 17070, with just corded phone connected to test socket. Can you hear any noise?
Can you get the same stats from the hidden test socket behind faceplate of master? Monitor Uptime against ES, bearing in mind that Uptime is zeroised every LoS but ES isn't.
Do you know if you are on Interleaved or Fast Path? I think the latter. If so, expect no more than 1 ES per min.
1999: Freeserve 48K Dial-Up => 2005: Wanadoo 1 Meg BB => 2007: Orange 2 Meg BB => 2008: Orange 8 Meg LLU => 2010: Orange 16 Meg LLU => 2011: Orange 20 Meg WBC