ADTRAN 1202052L1, User Manual

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Chapter 2. Installation
2-8 TSU 100 User Manual 61202052L1-1
Chain-In/Chain-Out
TSU 100 units and other TSUs can be linked together to form a
chain. Figure 2-4 provides an example of a chain-in arrange-
ment with a PC or a modem. The first TSU 100 in the chain
receives controlling input from the PC or modem.
Figure 2-4. Example of Chain-In
Subsequent TSUs in the chain are in a position to intake infor-
mation from another TSU. This in-taking of information from
another TSU in the chain is identified as Chain In. The baud
rate for the chained units must match that of the first unit.
Unless locked out externally, the front panel can also control
the unit.
At this point, the Unit Initialization procedure is concluded. If
the unit is to be configured remotely, there are no additional
items necessary to complete prior to executing remote configu-
ration.
The Passcode, the Unit ID, and the Control Port settings are
stored in a nonvolatile memory. This ensures that they are oper-
able for subsequent power-up sequences.
TSU 100
PC or Modem
Chain
Input
Chain
Out
TSU 100/
TSU 120/TSU
Chain
In
Chain
Out
TSU 100/
TSU 120/TSU
Chain
In
Chain
Out