Figure 7-9. Separated Trunk And Line Ports - Avaya 6424D+M User Manual

7-18
MDF/lDF DESIGN: DEFINlTY GENERIC 2 WITH UNIVERSAL MODULES
Zone Configurations. When a large number of frames are required to construct an MDF, the task of
connecting and disconnecting jumper wires can become difficult for two reasons. First, jumper wires of
awkwardly long lengths are needed to make cross-connections between the extreme ends of the frame
lineup. Second, the necessity to make cross-connections between the ends of the frame lineup can cause
an overflow of jumper wires in the wireways of the middle frames.
To avoid these problems, frame lineups that exceed 16 ft and terminate more than eight modules are
divided into zones. A zone is a section of the MDF that has a maximum horizontal distance of 16 ft.
Cross-connections can be made only between the cables that terminate within the same zone. This
keeps the jumper wires short and easily manageable.
When the MDF is more than 16 ft wide and terminates cabling from six or more modules, you must:
Divide the cable terminations from the modules among the zones according to table 7-6, Module
Allocation per Zone with Type-1 Frame, or table 7-7, Module Allocation per Zone with Type-2
Frame, depending upon the type of frame you are using.

Figure 7-9. Separated Trunk and Line Ports