OpenH323 Gatekeeper includes Radius and database support and many VOIP routing functions.

OpenH323 Gatekeeper forms the basis for a free IP telephony system (VOIP).The GNU Gatekeeper is very stable and it is being used commercially by many organizations to provide VOIP services.

Here are some key features of "OpenH323 Gatekeeper":

· executables for Mac OS X, Linux, Windows, FreeBSD and Solaris
· can be run as a Windows service
· accounting and call authorization via SQL database, Radius, file or external application
· flexible call routing
· number rewriting (calling and called)
· support for NAT traversal
· full H.323 proxy
· TCP interface to applications
· CTI functions (eg. VOIP call-center, call transfers)
· gatekeeper clustering support (neighbors, parent/child, alternates)
· H.235 security
· graphical user interface
· it's free, including source code

What's New in This Release: [ read full changelog ]

· Firebird database driver updated for Firebird 2.0.x and 2.1.x
· BUGFIX(Toolkit.cxx) don't ignore ExternalIP settings when NetworkInterfaces= is set
· BUGFIX(SoftPBX.cxx) make response messages more consistent
· the old format (2.0) to specify neighbor gatekeepers is deprecated now and has been removed from the manual; it still works, but may be removed from future versions
· BUGFIX(ProxyChannel.cxx) only close endpoints logical channel on CloseLogicalChannel, use [Proxy]SearchBothSidesOnCLC=1 to retain the old behavior
· BUGFIX(Toolkit.cxx) Enable RewritePString to rewrite address correctly if unregistered full URI.
· BUGFIX(Neighbor.cxx) srv policy now fails calls and doesn't pass them to the next policy if a SRV record exists for a domain, but doesn't have a destination for the call
· allow to set proxy mode through 'proxy' variable in Radius h323-ivr-in attribute (thanks to Yuriy Georgiewskiy)
· BUGFIX(Routing.cxx) let dns policy handle LRQs that resolve locally, so URI dialing from neighbors works
· the manual has been improved (thanks to Robert Kulagowski)
· set Radius VSA attribute h323_rtp_proxy in stop event (thanks to Yuriy Georgiewskiy)
· BUGFIX(ProxyChannel.cxx) fix memory leak when creation of a fastStart channel fails
· status port command DisconnectIP now also works with unregistered endpoints using the std port
· BUGFIX(ProxyChannel.cxx) fix handling of H.460.19 RTP keepalive packets
· new switch [Proxy]DisableRTPQueueing=1
· BUGFIX(ProxyChannel.cxx) fully initialize UDP proxy IPs and ports
· BUGFIX(Routing.cxx) don't apply dns policy to aliases of type dialedDigits
· BUGFIX(Toolkit.h/.cxx) use default IP for networks specified in InternalNetwork=, not ExternalIP
· enable data execution protection on Windows versions that support it (starting with XP SP3)
· BUGFIX(gk.cxx) make sure Windows service writes same trace format as application (including file and line)
· BUGFIX(Neighbor.cxx) fix memory leak in srv policy, only send the local part of the alias in the LRQ
· new switch [RoutedMode]H46018NoNat to disable H.460.18 if no NAT detected (default enabled)
· new routing policy 'catchall' to route all calls to one alias or IP
· new Radius attributes on stop: h323pddtime, h323ringtime, h323routeattempts
· BUGFIX(Neighbor.cxx) fix srv policy for direct mode, don't send LRQ if SRV points to us
· new switch [RoutedMode]TranslateSorensonSourceInfo=1 to convert the Sorenson VP200 caller information
· BUGFIX(GkStatus.cxx) don't flush status port socket when access is denied to avoid blocking
· new switches in [Gatekeeper::Main]: CompareAliasType and CompareAliasCase to switch off alias type and case matching
· BUGFIX(Routing.cxx) fix dns policy for direct mode
· BUGFIX(Neighbor.cxx) try next policy if SRV lookup fails
· neighbor type (GnuGk|CiscoGk|ClarentGk|GlonetGk) is now case insensitive
· features documented: [AssignedAliases::SQL], [AssignedGatekeepers::SQL] and [GkQoSMonitor::SQL]
· BUGFIX(RasTbl.cxx) use rewritten number when decrementing prefix capacity counters, so they match the increment
· feature to set a ClientAuthId in SqlAuth that is provided as %{client-auth-id} on all accounting events
· new status port command ResetCallCounters
· changed ProxyForSameNAT default from 0 to 1 (to avoid media failure uncertainty)
· BUGFIX(RasSrv.cxx) IsReachable looks at correct route table. (virtual was ignored)
· changed [RoutedMode]EnableH46024= to be consistent with H.460.18 switch
· BUGFIX(RasSrv.cxx) RCF messages H.460 features now supported Features not GenericData
· BUGFIX(ProxyChannel.cxx) H.460.19 working with Fast Connect
· BUGFIX(RasSrv.cxx,ProxyChannel.cxx) Tandberg MXP interoperability fixes
· BUGFIX(ProxyChannel.cxx) check capacity on routes supplied by authenticators (Radius, SQL etc.)
· BUGFIX(RasSrv.cxx) avoid cutting off status messages after 1000 chars (problem in PString::Printf)
· BUGFIX(ProxyChannel.cxx) fix for fastStart with H.460.19
· new switch [RoutedMode]EnableH.460.24=, which defaults to OFF
· send RTCP statistics to Radius server (thanks to Yuriy Georgiewskiy)
· BUGFIX(Toolkit.cxx) fix a crash in RewriteE164() when casting aliases
· new config section [ModeSelection] to specify the routing/proxy mode by IP network