NEC Xen Master System Hardware Manual page 65

System Hardware Manual
2.3.2 Selecting a Permanent MDF Location
When selecting a permanent site for the MDF, the
technician may encounter some of the following situations.
✆
Limited space is available for installation, but must
be used.
✆
The available space may pose one or more
environmental hazards.
✆
The proposed location has limitations such as
insufficient lighting or the lack of a suitable ground for
the KSUs.
When the technician encounters these situations, he must
provide the best possible solution for installing the
equipment. This document cannot cover all possible
situations, precautions, and actions.
2.3.3 Selecting a Site for Installing the Telephones
When a site is selected for the installation of the
telephones, the following conditions should be considered
to ensure proper installation.
✆
Ensure that the cable length and line resistance (loop),
between the KSU and the telephones, comply with the
specifications show in Chapter 2, Table 2-3 Multiline Terminal
Loop Resistance and Cable Length.
✆
Some devices require an external power supply. Select a
place where they can be easily connected to an AC outlet.
May 2001
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