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What is Dial Up Networking

Dial up networking allows devices to connect to a LAN or WAN through telephone lines. It is often used for home users or networks, thus providers have special subscriptions for them.

There are different types of dial up networking services such as the V.34 and V.90 modem and the integrated services digital network (ISDN), they use network protocols that have been specially designed for them such as the point to point protocol (PPP).

The client modem will connect to the ISP modem, which them responds to the request by sending network data through the telephone line until one of the modems disconnects.

Initially dial up was the lowest cost setup to obtain, thus it was very popular in the 90’s, but its performance is quite disappointing (V.90 supports less than 56kbps and ISDN manages up to 128kbps). This is one of the main reasons why high speed broadband technologies are being embraced rather rapidly as they are released.


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