Comment Re:"Copper based" is a lie. (Score 1) 63
"The whole network" hasn't been copper-based since the late 20th century. Long-distance phone connections went microwave in some areas by the 1970s and were largely fiber by the '80s or early '90s.
When people talk about "copper based" these days they typically mean either from the local traditional telco switch to the premises, from the neighborhood "box" (typically a fiber-to-copper conversion box, but possibly a radio-to-copper converter) to the premises, or from somewhere on the premises (e.g. your cable television or fiber-provider's VOIP-to-analog modem) to the analog telephone device, depending on context. The bottom line is to the end user, it "looks like" plain-old-telephone-service to a device that works on a POTS (analog) line, preferably with a cost that is no higher than a POTS line would be.