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• Remove the 50DU/INT bottom cover to connect the
Ethernet cables. To remove the bottom cover, pinch
together the latches on both sides.
• On the 50DU/INT, the 50DU/50CU connection
terminals are not differentiated, so you can connect to
either the left or right terminal.
Connecting the 50DU/INTs together
1
Connect the 50DU/INTs according to the
installation environment and operation method.
Daisy-chain connection:
Connect the 50DU/INTs in a series to the DU CHAIN A/B (C/
D) terminals. Compared to a ring connection, a daisy-chain
connection enables the 50DU/INTs to be placed even farther
from the 50CU.
Final 50DU/INT
Final 50DU/INT
If a connection failure occurs
here, all the connections to the
last DU/INT are disabled.
Ring connection:
Connect the 50DU/INTs to each of the DU CHAIN A/B
terminals and then connect together the last 50DU/INTs
together to form a ring. Even if a connection failure occurs
somewhere in the ring, since the connection is recognized as 2
daisy chains using the DU CHAIN A/B terminals, the influence
of the failure can be minimized and you can continue operating.
Even if a connection failure
occurs, since the connection is
recognized as 2 daisy chains
using the DU CHAIN A/B
terminals, you can carry on
conference control.
One more ring connection can
be made by configuring these
terminals as the DU CHAIN C/D
terminals.
• Combining different connection types is also possible,
such as a ring connection using the DU CHAIN A/B
terminals and daisy-chain connections using the DU
CHAIN C/D terminals.
Daisy-chain connection Ring connection
2
Expand the system with EXT.
By adding EXT to the system, you can increase the number of
50DU/INT connections and extend the distance of the total
extension length of the connecting cable (LAN cable).
For instance, you can connect a total of 100 50DUs/INTs, 50
units on either terminal, by connecting an EXT near the B
terminal when using a daisy-chain connection on both the DU
CHAIN A and B terminals.
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