Dial-up connection

A switched line connection or dial-up connection is a connection that uses an analog telephone medium, such as the fixed switched telephone network, or digital like GSM, but whose main purpose is voice telephony.

In fixed telephony, both ends negotiate using modems, which establish a physical circuit between them. In mobile telephony, the telephone and provider establish an analogous virtual channel.

The connection begins with a telephone call to the number provided by the contracted ISP, Internet Service Provider (Internet Service Provider). Once the communication is open, the connection parameters are negotiated and, finally, the virtual circuit that generates Internet access is created.

Uses

In the 90s, the vast majority of TCP-IP protocol connections were transmitted by Dial-Up, with the maximum possible speed being 56 Kbps, making it possible to load few elements of web pages such as text, images or in few cases videos. At the beginning of the 2010s, this type of connection began to fall into disuse due to the growth of fiber optic connections and the greater recreation and home distribution of Broadband, being today a type of connection that is quite relegated, being used in rural areas only and in some Developing Countries.