See INSTALL for installation instructions Under Redhat, you can start the pbx and all it's necessary components by running this command as root: service sipxpbx start Non Redhat users /usr/local/sipx/etc/init.d/sipxpbx start To investigate a process that may not be starting correctly: tail -f ${prefix}/var/log/sipxpbx/watchdog.log and look in that directory for the log file for that process. To inspect what processes are running: service sipxpbx status or /usr/local/sipx/etc/init.d/sipxpbx status