Line Attenuation question

[TheRealWitblitz]

My Line Attenuation currently sits at 39.5dB, not great is it? My question is, what is the maximum sync rate I can achieve with it? I'm currently on 2Mb and it seems to be stable with the odd latency spike. My exchange can handle 4Mb maximum, but I won't ask them to enable the profile if it becomes too unstable.

Other stats are:
Downlink rate 2047900
Uplink rate 507900
SNR (downstream) 21.30 dB
SNR (upstream) 21.5 dB
Line Attenuation
(downstream) 39.5 dB
Line Attenuation
(upstream) 17.5 dB
Connection Standard ADSL2+

Thanks for any help.

 

[JohnJuniorV3]

Should be fine