Alax.Info DHCP Server was updated and received a new feature to send TFTP Server Name (DHCP option 66) and TFTP Server IP Addresses (DHCP option 150) so much required to automatically configure VoIP hardware.
Option 150 is defined by internet draft “VoIP Configuration Server Address Option”:
This memo documents existing usage for the "VoIP Configuration Server Address Option" (previously known as the "TFTP Server IP Address Option"). The option number currently in use is 150. This memo documents the current usage of the option in agreement with RFC 3942 [RFC3942], which declares that any pre-existing usages of option numbers in the range 128 - 223 should be documented and the working group will try to officially assign those numbers to those options.