CASSCOMM is comprised of many different companies specializing in the telecommunications industry. Based out of central Illin ... ois and serving nine counties covering 32 communities with the latest in technology, CASSCOMM operates Cass Communications Management Inc., Cass Cable TV, Cass Internet, Cass Telephone, Cass Tech Center, Cass Long Distance, Cass Advertising, Gillcrest Farms and Gillcrest Estates. Services offered include: cable television, high-speed internet, digital phone, landline telephone service, cable television advertising and computer repair. read more