Access technologies compared Modem Modems are the most common technology used to connect to the Internet, and it is also the slowest.
Modems are a switched technology, and the only analog technology in use today.
You can use each B channel to place a call, simultaneously, to two different numbers. If you receive or place a call while bonded, your connection will drop back down to 64k to free up the line. ISDN access provides the speed to make the Internet really responsive. A file that takes ten minutes to transfer on a modem will be done in a minute on ISDN . One ISDN line is capable of providing full high-speed Internet access to multiple people on a network simultaneously.