Equinox Systems MEGAPORT Hardware Reference Manual page 40

Punch Blocks
Punch blocks provide a quick and inexpensive solution to wiring
around buildings. They may be concealed in wiring closets and
individual wires run to each location where a terminal or port is to
be connected. Punch blocks may be used with modular wall outlets
and wiring accessories.
Figure 3-13 illustrates connecting the MEGAPORT board to punch
blocks using modular adaptors and modular wall outlets. Wall
outlets should be wired as shown in Figure 3-14. Figure 3-15 shows
the pinouts for the Equinox part number 210044 punch block when
connected to a MEGAPORT CS board.
Note that the punch block has two 50-pin PBX connectors and
connects 24 ports. Also note that internally the punch block has
common ground wired to the center two rows of pins. Any of these
pins may be used for connecting terminal ground to the port.
Punch Modular Modular
Block Cables Adaptors
Wall Outlets
Figure 3-13. Punch block installations
Figure 3-14. Modular wall outlet wiring: CS ports
34 Equinox MEGAPORT Hardware Reference Manual