Applications | LTPH-UM-1234-01 |
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APPLICATIONS
HiGain doublers operate with any number of other T1, Plain Old Telephone System (POTS), Digital Data Service (DDS), or other HiGain systems sharing the same cable binder group.
The HDU-409 can be used in two- to five-span circuits, depending on the models of the HLU and HRU being used with the doubler units and the power option chosen for the HRU. The number of doublers is equal to one less than the number of spans as shown in Figure 6 on page 24.
Table 3 lists the maximum number of HDU-409 doubler units that can be deployed according to which HLU and HRUs are used.
Each span can take up to 30 seconds to acquire HDSL synchronization. The total time to acquire end-to-end synchronization increases with the number of spans.
Table 3. HDU-409 Circuit Ranges
| | | Maximum Number of HDU-409 Doublers Per Circuit (a) |
| | | | |
HLU Model | Line-Powered Remote | Locally-Powered Remote |
| | | | | | |
| | | I-CPE ON | I-CPE OFF | I-CPE ON | I-CPE OFF |
| | | | | |
HLU-388 List 2x, | 1 | 2 | 2 | 2 |
HLU-319 List 2x, | | | | |
HLU-231 List 3D, | | | | |
HLU-231 List 6D, | | | | |
HLU-232 List 1D | | | | |
HLU-231 List 7x, | | | | |
HLU-431 List 1D | | | | |
| | | | |
HLU-231 List 8D, | 2 | 3 (b) | 2 | 4 (c) |
HLU-319 List 5D, | | | | |
HLU-388 | List 5D | | | | |
HLU-231 | List 8/List 8E, | | | | |
HLU-319 | List 5/List 5E, | | | | |
HLU-388 | List 5/List 5E | | | | |
(a)HRU-411 applications with Current-Customer Premises Equipment (I-CPE) ON are limited to single HDU-409 doubler circuits. The HRU-412 is limited to applications with one and two doublers only.
(b)Requires HRU-402 or HRU-411.
(c)Requires HRU-402 List 1 or List 3.
6 | April 30, 2003 | HDU-409 Lists 1, 2, and 3 |