11.3. Dialin service

Contributed by Guy Helmer <ghelmer@alpha.dsu.edu>.

This document provides suggestions for configuring a FreeBSD system to handle dialup modems. This document is written based on the author's experience with FreeBSD versions 1.0, 1.1, and 1.1.5.1 (and experience with dialup modems on other UNIX-like operating systems); however, this document may not answer all of your questions or provide examples specific enough to your environment. The author cannot be responsible if you damage your system or lose data due to attempting to follow the suggestions here.

11.3.1. Prerequisites

11.3.1.1. FreeBSD Version

11.3.1.2. Terminology

11.3.1.3. External vs. Internal Modems

11.3.1.4. Modems and Cables

11.3.1.5. Serial Interface Considerations

11.3.2. Quick Overview

11.3.3. Kernel Configuration

11.3.4. Device Special Files

11.3.4.1. Making Device Special Files

11.3.5. Configuration Files

11.3.5.1. /etc/gettytab

11.3.5.2. /etc/ttys

11.3.5.3. /etc/rc.serial or /etc/rc.local

11.3.6. Modem Settings

11.3.6.1. Locked-speed Config

11.3.6.2. Matching-speed Config

11.3.6.3. Checking the Modem's Configuration

11.3.7. Troubleshooting

11.3.7.1. Checking out the FreeBSD system

11.3.7.2. Try Dialing In

11.3.8. Acknowledgments