There was a time, not long ago, when every house depended on old time phone wiring for any electronic connectivity. Nowadays, we clearly have many alternatives to the old time press button systems. However, the old wire is still out there, overhead on telephone poles and underground as in the case of the photo below.
Typically in the old days telephone wire ran into each house in a double two pair. The red and blue wires were one pair and the telephone company might refer to this as a R3 box. Here in this photo you can see all the many wires landed onto the punchblocks. It is likely a technology soon to be extinct but very interesting.