100D Module Problems

The ACCULINK 3160/3164 DSU/CSU is physically similar to the 3150 CSU with programming on the front panel and menus appearing on the LCD screen. For the preparation of specific tests, see the operator’s guide that comes with the unit.

551 T1 Channel Service Unit

Figure 4-8.551 T1 CSU Loopback Connection

Control Unit Problems 4-73

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Image 451
AT&T 3.0 manual 551 T1 CSU Loopback Connection