This document discusses how a public radio broadcaster in Sweden transitioned to using open source software like Kamailio, Baresip, Asterisk, and Homer for their IP-based broadcast infrastructure. It describes their journey from using proprietary ISDN equipment to building a flexible system using SIP, RTP, and IP that supports live broadcasting from mobile devices. The broadcaster is now working to share their work through the open source IRIS Broadcast project to help other public broadcasters transition to open standards and share best practices.

1. Kamailio on air
A personal story about using Kamailio in Public radio broadcast
oej@edvina.net | @oej | Kamailio World 2017
Photo: Courtesy of Sveriges Radio AB

2. History: convergence
Telecom Data com
Everything becoming
data packets

3. Everything will be IP,
everything digital

4. From “XYZ class” to
Standards and
commodities
Special
equipment
Commodities
from mail order and
retail
Things become
commodities

5. Of course, this affects
professional radio
broadcast too

6. @oej: Starting with
VoIP and visions early

7. Ending up
in ISDN
over IP

9. The Swedish Radio vision:
Broadcast live when it happens
from where it happens
Photo: Courtesy of Sveriges Radio AB

10. EBU
European Broadcast Union
(More Than Competing About Music)

11. EBU ACIP
Tech 3326: Audio Contribution over IP
IETF SIP + RTP + SDP management + various
codecs like MPEG, Opus, G711 and more

12. Old architecture
Live!
Radio ISDN Matrix
Arenas ISDN Matrix
Photo: Courtesy of Sveriges Radio AB

13. Photo: Courtesy of Sveriges Radio AB
Today: A backpack with Raspberry
PI, BareSIP and mobile connectivity.
Mobile
network or
Wifi
IP and SIP Matrix

14. IP everywhere

15. Today
User-controlled broadcast SIP infrastructureCCM
EWANIn houseMobile prod PBX
Studios PSTN
Mobile
codecs
Events
iPhone
app
The broadcast matrix
Classical FM radio Internet streaming

16. The Codec Call Monitor

17. Lesson learned:
In broadcast, audio is important.
Signalling is secondary.

18. Make audio
great again
OPUS

19. Audio infrastructure
transparent 24 bits sampling
IPv6.
No NAT, no CGN.
24 and 128 bits

20. Standing on the
shoulder of giants.

21. Kamailio
The heart of the system

22. Baresip
Building flexible solutions

23. Asterisk
For PSTN stuff only

24. Coming soon: Janus
Remote participation
over Internet

25. Testing: Homer
sipcapture
Everyone loves it so far.

26. FreeBSD and Debian
Linux
Rock solid server
platforms

27. The
platform is
serving over
2500 hours
of live radio
- every
single
month!

28. Summary: Open Source and
Open Standards works well for
the radio broadcast industry.
SIP != ISDNoverIP

29. The road ahead -
sharing!

30. Coming soon to an Internet near you.
IRIS broadcast
IRISBROADCAST.ORGTHE OPEN SOURCE PROFESSIONAL RADIO BROADCAST PLATFORM |

31. IRISbroadcast.org: The
goals for Sveriges Radio AB
• To share work we’ve done with
other public service radios, the
industry in general and other
interested partys
• To create a set of reference
implementations
• To create an open platform for
participation and knowledge
exchange
Share
Best current
practise
Participate

32. Making existing software
open source
License review Code review
Documentation
review
Licensing of
our work
Publish!
For existing software,
this process is time-consuming.

33. Launch May 19th in Stockholm, Sweden. We filled the
studio with friends from the broadcast industry all over Europe.
IRIS broadcast
IRISBROADCAST.ORGTHE OPEN SOURCE PROFESSIONAL RADIO BROADCAST PLATFORM |

34. This is just the beginning. Open
Standards and Open Source for
radio broadcast is the future.
IRIS broadcast
IRISBROADCAST.ORGTHE OPEN SOURCE PROFESSIONAL RADIO BROADCAST PLATFORM |

35. Join us today.
Twitter
@irisbroadcast
Github
github.com/irisbroadcast
Blog, web, lists
https://irisbroadcast.org
IRIS broadcast
IRISBROADCAST.ORGTHE OPEN SOURCE PROFESSOINAL RADIO BROADCAST PLATFORM |

36. Todo (as always)
#MoreCrypto
#IPv6
#GetALife
#TellAStory
See you next year!