HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Port to Device Cabling
Device Wiring
Chapter 4 45
Depending on the specific signal requirements of the system peripheral
devices, 3-, 4-, or 7-wire connections can be made. Figures 4-3 through
4-5 show the cable configurations for these connections. Figure 4-6 shows
the pinouts for a modem cable.
Figure 4-3 Cable pinouts - terminals and printers - XON/XOFF flow control
Figure 4-4 Cable pinouts - terminals and printers - Pin 20 hardware flow
control