For a house with good quality internal phone wiring and a reasonable local loop line to an exchange within a reasonable distance you will not have a problem
My broadband USB modem is connected to the master socket via 15 metres of standard phone cable. 4 other phones are connected within the house. The exchange is 6km away.
It all works fine, although when I first moved here it was necessary for BT to replace and upgrade some damp and damaged wire on the way to the exchange