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150-409-115-05, Issue 5 Overview
EDU-409 List 1 January 26, 2000 3
Table 2 lists the maximum number of EDU-409 List 1 doubler units that can
be deployed as a function of the ELU and ERU that are used with it.
Table 2. EDU-409 List 1 Circuit Ranges
ELU Model
Maximum Number of EDU-409 List 1 Doublers Per
Circuit
Line Powered Remote
Local Powered Remote
(a)
ELU-319 List 5D
ELU-319 List 6D
1 2
ELU-319 List 5E
ELU-319 List 6E
3
(b)
2
(a) Requires ERU-412 List 1D and List 2D. ERU-412 List 1E and 2E do not support
local power.
(b) Requires ERU-412 List 1E and 2E
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.