33
Ring connection
ATUC-50CU
ATLK-EXT165
L1
L1
L1
L1
L2
L2
L2
L2
L2
L2
L3
L3
ATUC-50DU
NOTICE
• For a CU-DU-DU-…DU-EXT connection, the distance between the [DU-EXT] is L1.
• When it is EXT-DU-…-DU-DU-, the distance for [EXT-DU] is L3.
Relationship of the LAN cable length, number of units connected and number of EXTs required: Ring connection
Length of cables
1-ring connection (using DUs)
1-ring connection (using IUs)
CU-DU
DU-DU
EXT-DU
Number of DUs
connected
Number of EXTs
needed
Number of IUs
connected
Number of EXTs
needed
L1
L2
L3
10 m
1.5 m
10 m
1 to 45 units
0 units
1 to 30 units
0 units
46 to 50 units
1 unit
31 to 50 units
2 units
50 m
1.5 m
10 m
1 to 36 units
0 units
1 to 24 units
0 units
37 to 50 units
2 units
25 to 50 units
2 units
100 m
1.5 m
10 m
1 to 24 units
0 units
1 to 16 units
0 units
25 to 50 units
2 units
17 to 48 units
2 units
10 m
2.0 m
10 m
1 to 43 units
0 units
1 to 29 units
0 units
44 to 50 units
1 unit
30 to 50 units
2 units
50 m
2.0 m
10 m
1 to 34 units
0 units
1 to 23 units
0 units
35 to 50 units
2 units
24 to 50 units
2 units
100 m
2.0 m
10 m
1 to 24 units
0 units
1 to 16 units
0 units
25 to 50 units
2 units
17 to 48 units
2 units
10 m
5.0 m
10 m
1 to 33 units
0 units
1 to 25 units
0 units
34 to 50 units
2 units
26 to 50 units
2 units
50 m
5.0 m
10 m
1 to 27 units
0 units
1 to 20 units
0 units
28 to 50 units
2 units
21 to 50 units
2 units
100 m
5.0 m
10 m
1 to 20 units
0 units
1 to 14 units
0 units
21 to 50 units
2 units
15 to 45 units
2 units