The main telephone socket is giving me less internet speeds than the extension outlets. 30% less. Upload speed not affected.
This is after replacing with new socket/new outlet, I never used the old one at this location.
The difference in wiring between extension and main, is main has more wires crammed into one telephone socket. All I did when installing socket is join up similar colored wires into one hole. There were 4 cables, each had 2 wires in them, blue and white. The new socket design has 4 pairs of holes, designated as 1, 2,3,4. Pic of design:
Each designated pair of holes, I put two wires of similar color from two cables coming from different directions.
The extensions have only one cable with 2 wires, blue and white.
What did I do wrong?