ISDN Terminal Adapters
When the speed provided by a modem just isn't enough, you must seek alternatives. One of the speedier options available is an ISDN link. ISDN is a digital communication method that can be used over a conventional phone line, although certain criteria must be met for an ISDN line to be available (such as the availability of the service and the proximity of your location to the telco's site). (The information in this section is intended only to cover ISDN terminal adapters, not ISDN as a system. Detailed coverage of ISDN is provided in Chapter 7, “WAN Technologies,” which covers WAN topics.)
To use ISDN, you need a device called an ISDN terminal adapter. ISDN terminal adapters are available as add-in expansion cards that ...
Get Network+ Training Guide now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
