Networking Fundamentals

Integrated Services Digital Network

As technology developed, the limitations of dial-up began to become a hindrance. Faster and better methods of communication were required. Integrated Services Digital Network (ISDN) was one of those methods. While improving on dial up, ISDN still utilized the existing telephone network. However, dial-up only allowed one device to use the line at a time, whereas ISDN allowed numerous network devices and voices to utilize the line at the same time.

To connect to the internet using ISDN, an ISDN modem is required. It should be noted that although a modem used with ISDN shares its name with a modem used with dial-up, that is pretty much where the similarities end. Recall that a dial-up modem converts digital ...