SIP Communicator
Open Source VoIP & IM

SIP Communicator - the Java VoIP and Instant Messaging client.

SIP Communicator is an audio/video Internet phone and instant messenger that supports some of the most popular instant messaging and telephony protocols such as SIP, Jabber, AIM/ICQ, MSN, Yahoo! Messenger, Bonjour, IRC, RSS and counting.

SIP Communicator is completely Open Source / Free Software, and is freely available under the terms of the GNU Lesser General Public License.

RESOURCES: The SIP Communicator FAQ can usually answer most questions. You can also ask on the dev mailing list, or at the irc channel #sip-communicator at irc.freenode.net.

Note: SIP Communicator is an open source project and an effort of many. If you would like to help or follow the project, make sure you join our Mailing Lists, check our roadmap or simply peek at the screenshots. Helping us translate it into your native language would be a great way to start your open source adventure!

2010.06.15 - Crystal clear calls with wideband Speex

Ever wondered why Skype to Skype calls sound so good? Well it’s mostly because they use high quality codecs known as wideband. Contrary to regular, narrow band codecs like GSM and G.711, wideband codecs encode and send a bigger portion of the audio spectrum. This results in the remote party getting richer, higher definition audio.

We have recently spent effort (one of the many aided by the NLnet foundation) on modifying our audio capture and playback system so that it would fully support full band audio. We have also added support for one of the currently most popular wideband FOSS codecs: Speex, and we’ve also just configured it as the default choice in SIP Communicator initiated calls. Bottom line is you can now enjoy high quality audio with SIP Communicator and have one more reason to drop proprietary solutions.

Oh and by the way, other wideband codecs such as CELT and Skype’s SILK are also on the way to getting integrated in SIP Communicator so stay tuned!

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