dialupyhteydet

Dialupyhteydet, or dial-up connections, refer to a method of accessing the internet using a modem and a telephone line. This technology was prevalent before the widespread adoption of broadband internet. Dial-up connections use the telephone system to transmit data, converting digital information into analog signals for transmission over telephone lines. The most common dial-up protocol is Point-to-Point Protocol (PPP), which establishes a direct connection between the user's computer and an Internet Service Provider (ISP).

Dial-up connections have several limitations. They are relatively slow, with typical speeds ranging from 33.6 to 56 kilobits per second (Kbps). This speed is significantly slower than modern broadband connections, which can reach speeds of several megabits per second (Mbps) or more. Additionally, dial-up connections are susceptible to disconnections due to line noise or interference, which can be particularly problematic during long download or upload sessions.

Despite these limitations, dial-up connections were widely used in the 1990s and early 2000s due to their availability and relatively low cost. They provided a basic means of accessing the internet for many users who did not have access to faster broadband technologies. Today, dial-up connections are largely obsolete, having been largely replaced by more reliable and faster broadband options such as DSL, cable, fiber-optic, and mobile broadband.