Making the Physical Connection

Making the Physical Connection

UUCP supports physical connections for TCP/IP local area network connections, direct links, or telephone lines. This example assumes a direct link. The procedure for running UUCP over telephone line or local area networks is similar, requiring minor adjustments to the various configuration files.

A direct link constitutes a connection between two Data Terminal Equipment (DTE) devices. The devices must be fooled into thinking they are communicating with a Data Communication Equipment (DCE) device. The way to get around this is with a null modem.

The minimum pinning configuration shown in Table 7-3.

Three-Wire Null-Modem Pinning Configuration
IRIS A IRIS B
2 Transmit Data 3 Receive Data
3 Receive Data 2 Transmit Data
7 Signal Ground 7 Signal Ground

Three-Wire Null-Modem Pinning Configuration
IRIS A	IRIS B
2 Transmit Data	3 Receive Data
3 Receive Data	2 Transmit Data
7 Signal Ground	7 Signal Ground

Attach the null modem cable to serial port two (ttyf2) on the local and remote workstations.

Note: For more information on cables and modems, see IRIX Admin: Peripheral Devices, Chapter 1, "Terminals and Modems."