FreePBX Distro uses a TFTP (trivial file protocol transfer) server to serve out phone configuration and firmware files using the TFTP protocol.
the TFTP server is started by xinit.d (see ''/etc/xinetd.d/tftp'')
the TFTP server binary is ''/usr/sbin/in.tftpd''
the TFTP data directory is ''/tftpboot''
TFTP logging is to syslog ("/var/log/messages")