HP AD278A and AD279A PCI Multiplexer Support Guide, Edition 2 - September 2006

Port Naming and Numbering Conventions

HP-UX Port Assignments

Appendix C

HP-UX Port Assignments

For each AD278A/AD279A PCI MUX Card installed in your system, insf creates devices for all of the ports

connected to that MUX card.

HP-UX Port Names

The following devices can be created:

1. Direct connect device.

Used for terminals, printers, and other devices that do not support or require modem control signals.

2. Modem control device.

Used for modems or other devices that use DTR/DCD (Data Terminal Ready/Data Carrier Detect) modem

control signals for establishing connections.

MUX port names are of the general form

/dev/<port_type><instance><port module><port>

Where:

<port_type> categories are:

tty = direct connect

ttyd = modem dial-in

cul = modem dial-out

cua = modem dial-out with automatic caller

NOTE The latter three examples are used with uucp dial-up protocol.

<instance> is an instance number which is assigned by HP-UX to the MUX card.

<port module> is a single lowercase letter from ‘a’ through ‘d’, representing the first port module through the

fourth port module.

<port> is a decimal number from 1 to 16.

If direct connect port types are used, the first port on the first port module (or fan out cable) of the first MUX

card is /dev/tty1a1. The second port on the first port module (or fan out cable) of the first MUX card is

/dev/tty1a2. The first port on the second port module of the first MUX card is /dev/tty1b1. And, the 16th

port on the fourth port module of the fourth MUX card is /dev/tty4d16.