There are two types of DSL installation: one is performed by a phone company technician, and the other is performed by you, the customer. The process can take up to a few weeks to complete. For most types of ADSL (the type of DSL service used for residential service), service providers offer a quicker, cheaper self-installation option that doesn't require a technician to visit your home or business. Still, though, some installations require you to schedule appointments with the phone company and with the ISP. Please be sure to check all the installation details and system requirements before placing your order.