1. jitsi.org
advanced real-time communication

2. jitsi.org
advanced real-time communication
FOR 10 YEARS AND COUNTING

4. VOICE
VIDEO
some supported codecs
Opus SILK G.722 G.729
H.264 VP8

6. jitsi for android

7. DESKTOP STREAMING

8. OUTLOOK INTEGRATION

9. OUTLOOK INTEGRATION

10. SECURITY
PRIVACY

11. OTR
SOCIALIST MILLIONAIRE PROTOCOL

12. SRTP
ZRTP
SDES
DTLS

13. DNSSEC

14. LDAP ON-LINE PROVISIONING
FEC OPUS SILK CALL RECORDING
DNSSEC IPv6 WIN AEC
LIBJITSI JITSI VIDEOBRIDGE

15. CUSAX
COMBINED
USE OF SIP
AND XMPP

16. draft-ivov-xmpp-cusax
CUSAX is now RFC 7081
Emil Ivov – Jitsi Peter Saint-Andre – Cisco Enrico Marocco - Telecom Italia

17. how cusax works
XMPP
SERVER
CUSAX
CLIENT
PROVISIONING
SIP
SERVER
IM PRESENCE
ROSTERS AVATARS
FEEDING
accounts
VOICE AND
VIDEO ONLY

18. XMPP ROSTER vCard-s
<vCard xmlns='vcard-temp'>
<tel>
<cell/>`
<work/>
<NUMBER>+33.1.77.62.43.39</NUMBER>
</tel>
</vCard>
SIP Call-Info Headers
INVITE sip:bob@biloxi.com SIP/2.0
To: Bob <sip:bob@biloxi.com>
From: Alice <sip:alice@atlanta.com>;tag=1928301774
…
Contact: <sip:alice@pc33.atlanta.com;gr=some-rsrc>
Call-Info: <xmpp:alice@example.com> ;purpose=impp

19. XMPP ROSTER vCard-s
<vCard xmlns='vcard-temp'>
<tel>
<cell/>`
<work/>
<NUMBER>sip:alice@atlanta.com</NUMBER>
</tel>
</vCard>
SIP Call-Info Headers
INVITE sip:bob@biloxi.com SIP/2.0
To: Bob <sip:bob@biloxi.com>
From: Alice <sip:alice@atlanta.com>;tag=1928301774
…
Contact: <sip:alice@pc33.atlanta.com;gr=some-rsrc>
Call-Info: <xmpp:alice@example.com> ;purpose=impp

20. conferences

27. jitsi videobridge

28. Conventional Audio Conferencing
Client C
stream C
mix A+B+D
Dedicated Mixer
Client A
Client B

29. Conventional (ad hoc) Audio Conferencing
Client C
stream C
mix A+B+D
ad hoc
Jitsi mixer D
Client A
Client B

30. Audio Mixing
Client A’s speech
+
Client B’s speech
+
Client C’s speech
=
Conf Mix A+B+C
img src: audacity

31. Video Mixing
Client A’s video
+
Client B’s video
+
Client C’s video
+
Client D’s video
=
Conf Mix A+B+C+D
img src: xkcd.org!

32. Conventional (ad hoc) Video Conferencing
Client C
stream C
mix A+B+D
ad hoc
heavyweight
video mixer D
Client A
Client B

33. Conventional (ad hoc) Video Conferencing
… not such a good idea ….
Client C
stream C
mix A+B+D
NO WAY!!!
ad hoc
heavy weight
video mixer D
Client A
Client B

34. Client C
stream C
stream A
stream B
stream D
Jitsi as ad hoc
RTP relay D
Client A
Client B

35. OLIBRI
COnferences with
Lightweight
BRIdging

36. conferences with Jitsi Videobridge

38. Jitsi Videobridge
A COLIBRI Reference Implementation
create channels
Jitsi Videobridge
XMPP server
client A
client C
Focus B

39. Jitsi Videobridge
XMPP server
XMPP Jingle
session-initiate
client A
client C
Focus B

40. Jitsi Videobridge
stream C
stream B
stream A
Jitsi Videobridge
client A
client C
Focus B

41. advantages to video relaying

42. SIP

43. Jitsi Videobridge and SIP
SIP server
create channels
Jitsi Videobridge
SIP client A
XMPP server
SIP client C
Focus B

44. Jitsi Videobridge and SIP
Jitsi Videobridge
SIP server
INVITE A
XMPP server
INVITE C
SIP client A
SIP client C
Focus B

45. Jitsi Videobridge and CUSAX
stream C
stream B
stream A
Jitsi Videobridge
client A
client C
Focus B

46. WebRTC

47. Your favorite signalling
protocol … and SDP
Jitsi
Videobridge
OLIBRI
Web Server
and Focus

48. Jitsi
Videobridge
OLIBRI
Web Server
and Focus

49. media
Jitsi
Videobridge
OLIBRI
signalling
Web Server
and Focus

50. soon
WEBRTC COMPATIBILITY CHECKLIST

51. TRICKLE ICE
A WEBRTC SPECIAL

52. Reminder: Vanilla ICE
STUN
Server
Alice
disco
STUN
Server
Bob
offer and
candidates
answer and
candidates
disco
…
connectivity
checks
…
Vanilla ICE as per RFC 5245

53. Reminder: Vanilla ICE vs Trickle ICE
STUN
Server
Alice
disco
STUN
Server
Bob
Alice
disco
offer and
candidates
answer and
candidates
STUN
Server
disco
O/A with host
or no cands
…
more cands &
conn checks
…
…
connectivity
checks
…
Vanilla ICE as per RFC 5245
STUN
Server
Bob
Trickle ICE
disco

54. soon
WEBRTC COMPATIBILITY CHECKLIST

55. and then you can have this in a browser