Selecting A Permanent Mdf Location; Selecting A Site For Installing The Telephones; Constructing The Main Distribution Frame (Mdf) - NEC UNIVERGE SV8100 System Hardware Manual

UNIVERGE SV8100/SV8300
2.4
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 conditions:
Limited space is available 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 chassis.
The technician that encounters these conditions 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 being selected for telephone installation, consider the
following conditions to ensure proper installation:
Ensure cable length, between the chassis and telephones, comply
with the specifications listed in
Terminals on page
Select a place where devices that require an external power
supply can be easily connected to an AC outlet.

Constructing the Main Distribution Frame (MDF)

The Main Distribution Frame (MDF) has two different standard quick-connect
terminal blocks that are mounted on a 3/4-inch plywood backboard. Mounting
these blocks on standoffs for ease of access is recommended. The
recommended blocks are 66B50 for termination of the MDF Cable Assembly
and 66M50 for termination of the station cables.
The Intermediate Distribution Frame (IDF) requires the 66M50 blocks only.
Both the MDF and the IDF use standard bridging clips for each terminal block.
The bridging clips mate the left half of the terminal block (terminated cable run)
to the right half of the terminal block (cross connection wire) to the terminal
block (cross connection wire). The bridging clips are also useful during
troubleshooting to help isolate the cable runs and terminals/telephones from the
central equipment and the Central Office Network from the system.
The SV8300 system can be floor-mounted, wall-mounted, desk-mounted or
rack mounted. Plywood should first be installed on the wall where the chassis
will be positioned, to allow for secure anchoring. It is equipped with a bracket,
which can be used to secure each chassis in any of these installations. Ensure
that enough space is available to allow the installation of the additional chassis
above and below the Controlling Chassis.
Table 3-12 Cable Length of
3-16.
Issue No. 1.5
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