telephone sockets connecting them to an ATA

Question

We have many extension sockets in the house therefore be fairly expensive to buy an ata for each phone. Since extension sockets are daisy chained together, could I just plug it into the FXS socket instead of the BT master socket? Or is the FXS port strictly for one phone only?

Answer 1

Most ATA FXS port can support multiple phones... they're typically spec for 3 to 5 REN. So should be ok.