The theme of my final work was a detailed review and description of DSL technology with an emphasis on using the same technology within the Republic of Croatia. This paper presents types of broadband access technologies. Broadband access technologies represent different ways of accessing the Internet and other services. At the beginning, only a wired medium was used, but with the development of technology and user needs, wireless access technologies were developed. Today, wired and wireless access technologies are used. Broadband access technologies allow the transmission of large amounts of data in a unit of time. 1 The aim is to present and describe the process of DSL technology development itself and to obscure and describe the emergence of each and analyze each other different types of DSL technologies. Thus, the timing of generation, comparative analysis of DSL and of course the advantages and disadvantages of this technology compared to today's 21st century. Within the work described, the emergence and the reason for the development of all types of DSL are general. But, in addition, it is explained in general what DSL technology is, how it works and where and how it is used. Of course, a description of the procedure for explaining how this technology works is described in the paper.