AT&T MERLIN LEGEND Installation & Maintenance Manual page 163

Installation
7. Connect the spade-tip wires on the 248B adapter to the
screws on a 2012D transformer (see Figure 30).
Plug the 400B2 adapter into a BR1A-4P adapter, 102
8.
connecting block, or 103 connecting block.
Place a plug onto the end of the inside wiring (DIW) on the
9.
CU side and plug the DIW cord into the BR1A-4P adapter.
10. On the PC side of the inside wiring, punch down the DIW
cord onto a 102 or 103 connecting block.
11. Plug one end of a D8W cord into the 102 or 103 connecting
block and the other end into a Z3A2 ADU.
12. Connect one end of an RS-232 cable to the Z3A2 ADU and
the other end to the COM1 port on the PC.
13. Plug the 2012D transformer into a wall outlet.
The Printer and the PC 3-55