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Your first ZRTP voice call with Jitsi


Hello. This short video will demonstrate how to have
a private voice call with Jitsi. We assume that you have already installed
Jitsi on your computer. If you’d like help with that, look for a “How to install Jitsi
” video in our channel. Let’s fire up Jitsi. For this demonstration
we are logged in with our Google account, and wish to call a friend who is also using
Jitsi with their Google account. Clicking once on their name, we see all options
we have. We can chat with them, call them with voice, call them with video, or share
our screen with them. Let’s click the telephone icon to call our
friend. The call takes a few seconds to connect. Jitsi
is now ringing on our friend’s computer. When she picks up the call, Jitsi connects
the call but warns us (by using the RED lock icon) that the voice channel is not secure
yet. Particularly the first time you call someone,
Jitsi takes a good few seconds to exchange cryptographic keys and secure the voice channel
with the ZRTP protocol. You can already use the call, but the voice channel has not been
secured yet! Notice how the lock icon has now turned to
AMBER. This indicates that Jitsi has established a secure voice channel with your friend’s
computer. Also notice the four characters that appear
lower in the “Compare with partner” frame. Spell out these four characters and ask your
friend to verify that she sees the exact same characters. If yes, congratulations, you can
be certain that this is a private channel, just between the two of you. Click on “Confirm”
and then “x” to close this frame. If any of the four characters are different
than what your friend sees, you should terminate the call — someone might be listening in! Congratulations! You are having your first
ZRTP-protected, absolutely private voice call!

Robin Kshlerin

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10 COMMENTS

  1. APrivateLifeOnline Posted on September 24, 2012 at 7:54 pm

    1. Re-enabling ICE would help. Any particular reason you can't use it?
    2. Try servers that support the full protocol (experimental: jit.si – stable: jabber.ccc.de)
    3. If the issue still persists look in the mailing list archives java.net/nonav/projects/jitsi/lists/users/archive
    4. Post on the users mailing list and attach some logs for troubleshooting: jitsi.org/index.php/Documentation/FAQ#logs

    Reply
  2. APrivateLifeOnline Posted on October 14, 2012 at 10:26 pm

    Yes, for the demo we used the same local wireless network.

    Reply
  3. KopetePanda Posted on March 25, 2013 at 8:00 pm

    Big brother is listening =D

    Reply
  4. Фёдор Ф Posted on March 31, 2013 at 12:21 pm

    Мои русские субтитры для учебных видео Jitsi
    //java.net/nonav/projects/jitsi/lists/dev/archive/2013-02/message/251

    Reply
  5. biggsterboy Posted on April 28, 2013 at 6:07 pm

    Hi, a friend and I have downloaded and installed Jitsi and logged in using our hotmail IDs. Although we can see that the other is logged in and can send and receive text messages, the options to voice call and video call are greyed-out and unavailable. Our video cameras are operating fine and we've used them with other video programs (i.e. Skype, Logitech VidHD, etc) with no problem. Is there something specific we need to do to set up Jitsi so that voice/video calls are possible? Thanks.

    Reply
  6. APrivateLifeOnline Posted on April 28, 2013 at 7:55 pm

    Hi, not all protocols are supported for voice/video calls, please see the webpage jitsi.org/Main/Features

    To use the full features of Jitsi you will need to use a fully supported service. I have found that the easiest to setup for newcomers (who don't know/care what XMPP or SIP are), is to just use free Google accounts. Google has implemented everything that Jitsi supports, so you can get encrypted video calls, encrypted text chats with OTR etc.

    Reply
  7. APrivateLifeOnline Posted on April 28, 2013 at 8:02 pm

    HOWTO use google, facebook or jit.si accounts: jitsi.org/Documentation/UserDocumentation

    Reply
  8. Kethzer Docteur Posted on July 25, 2013 at 3:57 pm

    Have any one being able to encrypt call over WAN, due to NAT ZRTP Key exchange haven't been possible. I don't known if Jitsi setup can make possible. Please let me know.

    Reply
  9. APrivateLifeOnline Posted on July 26, 2013 at 7:24 am

    Yes, please see [h]ttps://jitsi.org/Documentation/FAQ#stun for some more info on NAT traversal. It should "just work". If it doesn't for you, please search the users mailing list ([h]ttp://lists.jitsi.org/pipermail/users/) or subscribe & ask for help in the mailing list. It usually helps to provide the logs [h]ttps://jitsi.org/Documentation/FAQ#logs

    Reply
  10. Sprits Fal Posted on May 3, 2014 at 12:49 am

    00:55 yea I can't even get to that screen, it gives me a cannot connect

    Reply
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