An ISDN adapter, or a terminal adapter, refers to a hardware device that connects a computer (terminal) to the Integrated Services Digital Network (ISDN) network. It is also called an ISDN modem. ISDN technology is mainly used for wide area networking using either Basic Rate Interface (BRI) or Primary Rate Interface (PRI). This technology provides higher data transfer speeds as compared to other technologies such as dial-up over ordinary telephone lines.
ISDN adapters can be added to a system on an expansion slot, or they can be standalone external devices connecting to the serial port of the computer. For example, some routers provide ISDN interfaces as a built-in feature. The ISDN technology is not so popular and has now been replaced by faster and more flexible WAN technologies.
ISDN adapters can be added to a system on an expansion slot, or they can be standalone external devices connecting to the serial port of the computer. For example, some routers provide ISDN interfaces as a built-in feature. The ISDN technology is not so popular and has now been replaced by faster and more flexible WAN technologies.
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