US Robotics 000698-13 -, Getting Started Manual

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2-4 Courier I-modem Getting Started Guide
Required Components
BRI-line signals must be translated into signals your computer can
understand. Several devices must be in place to perform the translation.
This Is a device
TE2
(Terminal Equipment 2)
That does not have built-in ISDN capability.
TE2s require Terminal Adapters (TAs),
such as the I-modem, to communicate over
the ISDN. Example: Computer.
TA
(Terminal Adapter)
That translates between non-ISDN signaling
that TE2s provide (such as EIA-232) and the
S/T-interface signaling that the NT-1
understands.
NT-1
(Network Termination
[Unit] -1
That ranslates between the short-distance
signaling used at the S/T-interface and the
longer-distance signaling used at the
U-interface. NT-1s also convert from the
two wires used for the phone line to the six
or eight wires needed for the S/T bus.
How Does the
I
-modem Fit In?
The I-modem needs an NT-1 device to work with ISDN. If you currently
use an NT-1 device, you can use the S/T-interface I-modem.
This version of I-modem Allows the I-modem to connect
U-Interface Integrated NT-1 Directly to the U-interface
S/T-Interface To an external NT-1 device (you must
have an NT-1 device)