what is a broadband modem
Fotosearch / Getty Images. Definition: A broadband modem is a type of digital modem used with high-speed Internet services like DSL, cable or fiber Internet services.Cable modems connect a home computer (or network of home computers) to residential cable TV service, while DSL modems connect to residential public telephone service.able modems connect a home computer (or network of home computers) to residential cable TV service, while DSL modems connect to residential public telephone service.