For a two-line phone (e.g. home and home office; or dual business lines) you will need two splitters: one male to dual female (MDF) splitter and one female to dual female (FDF) splitter, two one-foot male to male (M2M) telephone line cords, and two Call Silencer devices. (1) Connect the MDF splitter to the cable phone modem. (2) Run a telephone wire from each port in the splitter to the “modem” side of each of the two Call Silencer devices. (3) Run a telephone wire from the “phone” side of each of the Call Silencer devices to the FDF splitter. (4) Connect your home phone network line into the FDF splitter.