[Skunkworks] Structured Cabling Question

Hi Skunks, Networking techies, kindly assist A non-techie mentioned to me about a structured cabling method where you use the same cable for phone and computer How does it work? What equipments are required? What is the advantage and disadvantages of this type of cabling over traditional structured cabling (data, voice separate)? Any links to more info/reference sites will be highly appreciated. Have googled and can't get any details. Regards Shad