ment) for connection to DCE such as a modem or multiplexer. When connecting the X.21 interface of the Model 3088/D to your DTE or DCE device, use an X.21
| DSL Span |
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Remote Model 3088) |
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| Router (DTE) | |
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| OR |
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| Mux (DCE) |
Model 3088/D (DCE or DTE)
Figure 8. Connecting the Model 3088/D to X.21 DTE or DCE
To change the DCE/DTE orientation from the default position (DCE), you must open the case Model 3088/D case.
Opening the Case
To open the Model 3088/D case, insert a flat head screw driver into an open slot on both sides of the case, as in figure 9. Twist the screw driver head slightly and the top half of the case will separate from the lower half, as in figure 9. Be careful not to damage the
mounted components.
Figure 9. Opening the 3088 case with a small screwdriver
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