The GNU Gatekeeper is a free H.323 gatekeeper based on the OpenH323 project. You can use it to manage a Voice-over-IP network and let endpoints (e.g., Netmeeting) communicate through symbolic names. It also has an external interface for billing and other applications. It runs on a number of Unix versions (including Linux and Solaris) and Windows. License: GNU General Public License (GPL) Changes:
This version extends virtual queues to work on unregistered calls, adds per prefix capacity limits and Q.931 cause code translation per gateway. It includes a new "sql" routing policy, enables auto-reconnect for current MySQL versions and implements the status port MakeCall command. Other new features include H.460.9 realtime QoS monitoring, H.460.interop support and H.350 authentication, bugfixes, and much more.

More...