
The I-modem and ISDN 2-5
U-Interface with Integrated NT-1
Figure 1–5 illustrates how the I-modems with Integrated NT-1 connect
your computer to the ISDN.
I-modem
ISDN
BRI Line
Figure 2.6 A Typical Installation of the I-modem
Once you’ve subscribed to ISDN service (see Chapter 2, Ordering ISDN
Service, for much more detail), your local telephone company will install a
BRI line at your site.
You install the I-modem in your computer and connect a cable between
the I-modem and the phone jack. Then run the I-modem Configuration
Manager or send commands to change a few settings. Before long, you’ll
be making calls on the ISDN.
S/T Interface
Figure 2.6 illustrates how the I-modem S/T connects your computer to the
ISDN.
Note: Some NT-1s contain an integrated power supply.
ISDN
BRI
U
I-modem
NT-1
AC Power
S/T
Supply
U + Power
Figure 2.7 A Typical Installation of the I-modem S/T.
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