11. Serial Communications

This section answers common questions about serial communications with FreeBSD. PPP and SLIP are covered in the Networking section.

11.1. How do I tell if FreeBSD found my serial ports?

11.2. How do I tell if FreeBSD found my modem cards?

11.3. I just upgraded to 2.0.5 and my tty0X are missing!

11.4. How do I access the serial ports on FreeBSD?

11.5. How do I enable support for a multiport serial card?

11.6. Can FreeBSD handle multiport serial cards sharing irqs?

11.7. Can I set the default serial parameters for a port?

11.8. How can I enable dialup logins on my modem?

11.9. How can I connect a dumb terminal to my FreeBSD box?

11.10. Why can't I run tip or cu?

11.11. My stock Hayes modem isn't supported---what can I do?

11.12. How am I expected to enter these AT commands?

11.13. The @ sign for the pn capability doesn't work!

11.14. How can I dial a phone number on the command line?

11.15. Do I have to type in the bps rate every time I do that?

11.16. I access a number of hosts through a terminal server.

11.17. Can tip try more than one line for each site?

11.18. Why do I have to hit CTRL+P twice to send CTRL+P once?

11.19. Suddenly everything I type is in UPPER CASE??

11.20. How can I do file transfers with tip?

11.21. How can I run zmodem with tip?

11.22. FreeBSD can't seem to find my serial ports, even when the