MDF/IDF DESIGN: SYSTEM 85 AND DEFINITY GENERIC 2 WITH TRADITIONAL MODULES
2-15
Green,
Purple,
Network Services
Equipment Ports
Yellow,
Auxiliary and
White,
Miscellaneous
Distribution
Figure 2-6. Four-Area MDF
Add two more fields to the arrangement when 4-pair installation cables, spare cables, or cables dedicated
t
O
PBXs other than System 85 or DEFINITY
Generic 2 with traditional modules are terminated on the
MDF.
Port Fields and Short Jumper-Wire Lengths.
For most installations, combine the line and trunk
fields to accommodate the universal port carrier, as shown in figure 2-7,
Combined Trunk and Line
Ports.
Use the arrangement in figure 2-8,
Separated Trunk and Line Ports,
if you are using 110P cross-connect
hardware in the installation or if managing jumper wires becomes difficult due to a large number of
analog trunks cross-connected between the green and purple fields. In figure 2-8 trunk cables from the
same module are separated from line cables; the separation requires slightly more space for terminations
on the MDF.
(Zone Configurations
provides additional guidelines for large installations.)
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