in the event of a power outage and Asterisk@Home losses power how do I get the server to boot up automatically when the power comes back on ? It sits at the username and password prompt.
Are you asking how to configure the computer to come back on? Or ar you asking how to start Asterisk at boot?
Configure the computer to power on when the power resumes:
This is typically a setting in the BIOS.
Start Asterisk at boot:
Make sure the service is configured for your run level (see chkconfig) or append an Asterisk startup command to rc.local