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The Model 2021 is designed to be easy to use. Since there is
nothing to configure, all you need to do is plug the Model 2021 into the
proper device ports.
Figure 1 below illustrates proper connection of an RS-232 DTE to
an X.21 DCE using the Model 2021xC-xT.
Sync. Terminal (DTE)
Figure 1. Sync Terminal connected to X.21 Modem using Model 2021XC-XT
To connect an RS-232 DCE to an X.21 DTE, use the Model
2021xT-xC, as shown in Figure 2.
RS-232 Sync Modem (DCE)
Figure 2. RS-232 Sync Modem connected to X.21 Host using Model 2021XT-XC
3.0 INSTALLATION
4
X.21 Modem (DCE)
X.21 Host (DTE)
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