What WAN services is designated for home and small business use as a digital dial-up over existing phone copper twisted pair?

Answer:
ISDN

ISDN or Integrated Services Digital Network was designed to be integrated into current digital telephone services and was originally designed to bring high speed voice and data to home users.
First answer by Media2k. Last edit by Media2k. Contributor trust: 2 [recommend contributor recommended]. Question popularity: 1 [recommend question].