Command Communications Com (CS3500) 4-Ports External Switch
Now you can eliminate the need for extra dedicated telephone lines with the ComSwitch 3500. It lets up to 3 devices - usually a telephone, answering machine, fax or modem - share a single phone line.A...
Pros: It works as recommended by Office Depot
Cons: Had to purchase separate filters, $40 and call 4 or 5 times