HP PCI Multiplexer Family Cabling, Diagnostics, and Troubleshooting Manual

Install PCI MUX Card
Enabling Callin Functionality
Chapter 230
Enabling Callin Functionality
To enable the callin() functionality, perform the following steps:
Step 1. Create the following device files.
/dev/ttydXYZ
Step 2. Add getty entry to inittab
ID:3:respawn:/usr/sbin/getty -h ttydXYZ baud
NOTE ID should be a unique value, like a1, a2, a3 and so on. Select a value
which is not present in /etc/inittab.
For Example:
To create the device file /dev/ttyd3a4, enter the following command at
the HP-UX prompt:
# mksf -v -d pci_mux0 -a2 -pa4
Add the following getty entry to inittab:
a1:3:respawn:/usr/sbin/getty -h ttyd3a4 9600