Jitsi
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Jitsi Setup
Go to http://jitsi.org/ in your browser. Download the program onto your computer. Jitsi (previously SIP Communicator) is an audio/video and chat communicator that supports protocols such as SIP, XMPP/Jabber, AIM/ICQ, Windows Live, Yahoo! and many other useful features.
Now that Jitsi is installed, go to the applications folder and open it.
Click Sip id. Add the user name & server detail we sent to you in the email (ex. 1001@ostel.me).
Click Password. Add the password we sent to you in the email.
Click Add to continue.
You should see it read "Registering" for a few seconds until the bar to the right of your account name turns Green and reads SIP ON Online.
Congratulations! You've successfully signed in.
Debian
For details on the current status with Debian packaging, please refer to [Debian Bug report logs].
Jitsi Issues
Known issues making a ZRTP initiation between clients.
Current successes for ZRTP: Jitsi -> Groundwire / Ostel -> Jitsi
Current failings for ZRTP: Groundwire -> Jitsi / Jitsi -> Ostel
Jitsi ZRTP FAQ
Secure video calls, conferencing, chat, desktop sharing, file transfer, support for your favorite OS, and IM network. All this, and more, in Jitsi - the most complete and advanced open source communicator.
The ever growing use of Voice over IP (VoIP) and other media applications triggered a more widespread use of the Real-time Transfer Protocol (RTP). Thise protocols is the workhorse for VoIP applications. Many VoIP applications send RTP data over the public Internet in clear, thus the data is not protected from eavesdropping or modification. Therefore most VoIP applications are regarded insecure today. During the last years several activities started to enhance the security of RTP.
The Secure Real-time Transfer Protocol (SRTP) enhances security for RTP and provides integrity and confidentiality for RTP media connections. To use SRTP in an efficient way VoIP applications should be able to negotiate keys and other parameters in an automatic fashion.
ZRTP is a protocol that negotiates the keys and other information required to setup a SRTP audio and video session
While it is important to look at the technology, the protocols and alike, it is also important to look at the implications a specific technology may have on its implementation, deployment, and usability. Usability is of major importance for VoIP peer-to-peer applications: these applications are mainly used by non-IT persons. Therefore the handling must be simple, easy to use, and shall not require special infrastructure or registration.
