19" Ksu-A - NEC UX5000 Hardware Manual

Ip communication server
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S
1-5
ECTION

19" KSU-A

1.5.1
19" KSU-A
In this documentation, the first KSU in the system requires a CCPU and is called the Controlling KSU. The
system can then be expanded by attaching a total of 4 KSUs directly together. Additional KSUs can be
connected together using an IP connection to allow for a maximum of 200 trunks and 512 extensions.
The KSU-A provides the power supply, connections on the power supply unit for an external backup battery, 6
universal slots for the CCPU and other optional PCBs (such as ESIU, SLIU, VOIPU, etc.) and an EXIFU
(expansion) slot. All slots are connected to the backplane.
When the KSU-A is combined with additional KSUs, Expansion Interface Units (EXIFU-B1 and EXIFU-E1) are
installed in the EXIFU slot in both KSUs. The connection to the Expansion Interface Unit is made using a CAT
5 cable.
The Controlling KSU-A is used to install the system PCBs, including one slot for the CCPU. It can
accommodate up to 96 ports (40 trunk and 80 extension ports). Additional KSUs can be connected together
to accommodate additional ports. With a maximum of 4 KSU-As, the system will provide up to 184 trunks
and 320 extensions and, with IP connections, a maximum of 200 trunk ports and 512 station ports is
possible.
To reach these limits, a MEMDB would be required as well as a license for the expanded ports.
Chapter 1
Figure 1-14:
KSU-A - FRONT
Chapter 1 - Installing the KSUs
1 - 15

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