The service is the same, wiring and connection methids have changed.
In the (not too) old days the inside wiring was 3 or 4 wire "JKT", previously it was an open twisted set. It has evolved into 3 pair cat3, or 4 pair cat5.
The custoumer termiation inside evolved from hardwaired, 4 pin plug to RJ11.
Outside, we had a protector made by Reliance elcetric, which had fuses and carbon blocks.
The repaced it with a smaller plastic one when I got highspeed (they had no problem with the fact I had cat 3 wire). Where I am ( smaller independant phone company), they don't use "NIDs", at least that I've seen.
