ISDN stands for Integrated Services Data Network. When you order a BRI ISDN connection, the phone company installs a U-interface at your home or business. The U-interface is nothing more than two wires that connect to a standard phone jack somewhere at your location. Typically with an ISDN line you can only have one extension. TAs come as either external boxes or internal cards for your computer, with Pivotal ISDN Multifunction Access Servers the TA is built in eliminating the need for extra equipment and expense.
StarGazers work with a variety products.
The 1900 will support any clock rate 2.048 megabits per second. They interface directly with most of the globally installed base of ISDN switch types.