Ekiga (formely known as GnomeMeeting) application was designed to be an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting.

SIP Features
￭ SIP Compliant
￭ Registrar Support
￭ Possibility to Simultaneously Register to Several Accounts
￭ Proxy Support
￭ Outbound Proxy Support
￭ Call Hold
￭ Call Transfer
￭ Call Forwarding on No Answer, on Busy, Always
￭ Configurable Port Ranges
￭ Instant Messaging
￭ DTMFs Support
￭ Message Waiting Indications Support
￭ ENUM Support
￭ Transparent NAT Support, Assisted NAT Support (STUN, IP Translation)
￭ SIP re-INVITE support
H.323 Features
￭ H.323v4 Compliant
￭ H.245 Tunneling and Fast Start
￭ Gatekeeper (RAS) Support
￭ H.235 Annex D. Support
￭ Gateway/Proxy Support
￭ H.450.1 Call Hold
￭ H.450.2 Call Transfer
￭ H.450.3 Call Forwarding on No Answer, on Busy, Always
￭ Configurable Port Ranges
￭ H.245 Text Chat
￭ DTMFs Support
￭ ENUM Support
￭ Transparent NAT Support, Assisted NAT Support (STUN, IP Translation)
Codecs Features
￭ iLBC, GSM-06.10, MS-GSM, G.711-Alaw, G.711-uLaw, G.726, G.721 and Speex Audio Codecs
￭ H.261 QCIF Video Code
￭ Dynamic Jitter Buffer
￭ Dynamic Threshold Algorithm for Silence Detection
￭ Echo Cancellation
￭ Wideband Codec Support
￭ Automatic Video Bandwidth Limitation
￭ Video Transmission/Reception Control
General Features
￭ Integration with Novell Evolution 2.00
￭ LDAP Support
￭ Advanced Addressbook
￭ Speed Dials
￭ Calls History
￭ Dialpad
￭ Rendez-Vous Support
￭ Advanced Personal Settings Management
￭ In call Instant-Apply Support for Settings
￭ Call Monitoring
￭ Auto Answer and Do Not Disturb Modes
￭ GConf and External Configuration
￭ Possibility for Administrators to Block Some Settings
￭ Configurable Full-Screen Video Conferencing
￭ OSS and ALSA Compatible Soundcards Support
￭ Video4Linux, Video4Linux 2 and Firewire Cameras Support
￭ Devices Auto-Detection
￭ Status Notion
￭ Configurable Sound Events
￭ Configuration Assistant
￭ Manual
￭ HIG Compliant GUI
￭ KDE and GNOME Compatibility
￭ Translated into Many Languages

What's New in This Release:
User-visible fixes:
· Use NAT ports instead of local ports for RTP, fixing many connection issues
· Add workaround for "In some cases ekiga answers always Busy Here"
· Fix crash in the avahi code
· Set the default audio and video devices
· Fix Call buttons do not work
· Add bpp16 (RGB16) support
· Add partial support for IPv6
· Fix number of users found on ekiga.net LDAP directory
· Fix connection type setting in assistant
· Use a decent connection type by default (DSL 128kb/s uplink)
· Check off iLBC, CELT32, CELT48 and G722 audio codecs by default
· Fix possible crash when PTLib code accessed by thread not created by PTlib
· Fix issue when deleting a safe object
· Fix possible NULL pointer access if get multiple NOTIFY messages on a REFER
Protocol fixes:
· Fix strange issue with SIP call diversion (302 response) to the same endpoint
· Change to only unregister those contact addresses we successfully registered
· Fix incorrect change to AlertingPhase in H323
· Change authentication failure to be f...