Line Speed vs Maximum

I've just had a second VDSL line installed. I've gone with Talk-Talk for this line. Looking at the router stats I'm seeing "Maximum Downstream Rate (kbit/s: ) 20080" and Downstream line rate (kbit/s: ) 14974. Under the logs I'm seeing zero errors and discards. (I've got around 1050m to the PCP)

Should I be asking talk talk to increase my line rate in line with it's maximum rate?

Thanks in advance

No, just wait. TT are not deliberately keeping your speed down.

What causes the delta between the two speeds?

Interleaving, INP and speed banding - in short, DLM.

Edited by deleted (Tue 22-Dec-15 13:42:42)

In reply to a post by BatBoy:

Interleaving, INP and speed banding - in short, DLM.

True. They're all the attempted solutions to fix the ultimate root cause: noise and bit errors.