Follow these instructions to configure an Arch Linux machine as a telnet server.
To use telnet only to connect to other machines, install inetutils (if not already installed):
# pacman -S inetutils
To configure a telnet server, install xinetd as well:
# pacman -S xinetd
1. To allow telnet connections in xinetd, edit Template:Filename and change 'disable = yes' to 'disable = no'
2. Add xinetd to the DAEMONS array of your rc.conf:
3. Reboot or restart xinetd:
# /etc/rc.d/xinetd restart
Testing the setup
Try opening a telnet connection to your server:
$ telnet localhost
Note that you can not login as root.