May 2001
System Hardware Manual
5 - 157
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5.3.4
Installing the VDH2(8)-U13
✆
A maximum of 9 VDH2(8)-U13 ETUs can be installed
in the Xen Master system (maximum of 72 ports), 3
per KSU in slots S1~S8.
✆
A maximum of 3 VDH2(8)-U13 ETUs can be installed
in the Xen Axis system (maximum of 24 trunks), in
slots S2~S7.
✆
The 10Base-2 ports on the VDH2(8)-U13 ETU use
4-wire polar cables.
✆
When connecting a VDH2(8)-U13 ETU to a multiline
terminal, avoid using under-carpet cables because
the device becomes susceptible to outside noises. It
is better to use EIA/TIA round cables instead of flat
cables. If under-carpet cables are used, you must
follow the installation instructions provided by the
cable manufacturer. Also consider these precautions:
+
Limit the under-carpet cable length to 20 metres.
+
When using multiple pair cabling to connect the
VDH2(8)-U13 units to the multiline terminal, do
not include analogue lines in the same cable.
✆
When connecting a VDH2(8)-U13 ETU, use the FCE-
U13 Unit for proper wiring. Lead the cable connected
to the ETUs out through the clamp on the KSU as
shown in Figure 5-31 Front Cover Extender for
VDH2(8)-U13 ETUs. Refer to Installing a Front Cover
Extender (FCE-U13 Unit) in Chapter 4.
Figure 5-31 Front Cover Extender for
VDH2(8)-U13 ETU
s