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Typical ISDN Network
Figure 7 shows a typical
ISDN network.
Figure 7: ISDN Network
In Figure 7, two types of
end-user devices are connected to the ISDN network:
- Terminal equipment type 1 (TE1) device—Designed
to connect directly through an ISDN telephone line.
- Terminal equipment type 2 (TE2) device—Not
designed for ISDN. TE2 devices—for example, analog telephones
or modems—must connect to the ISDN network through a terminal
adapter (TA).
A terminal adapter allows non-ISDN devices on the ISDN network.
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