The document discusses how the SIP world is changing and the need to embrace new technologies. It highlights that SIP is 10 years old and was mostly used for PSTN over IP, but the network is now changing with more devices, multimedia capabilities, and an exploding number of users. New protocols like ICE, GRUU, and WebRTC are helping to address issues like NAT traversal and enable real-time communications between browsers. The future is moving to an open, unified communication system built on open standards, security, and new applications beyond just telephony.

1. Watch
out!
The SIP world is changing.
Don’t stay in the past.
Olle E.
oej@edvina.net Johansson * oej@edvina.net * Twitter oej
© Copyright Edvina AB, Sollentuna, Sweden 2011. All rights reserved.

2. Warning.
High rate of slides/min...

3. Me.
Twitter:
@oej
@sipv6
@edvina
Blog:
www.voip-forum.com

4. AftenpostenIDAG!
Aftenposten idag

5. Where are we?
• SIP is ten years old
• Mostly used for PSTN over IP
• Narrowband audio
• Insecure implementations
• Insecure deployments

6. BAD!
We can do better.
Our customers deserve better.

7. WE SHOULD BE
ASHAMED!

8. The network is changing.
• We have more smart phones, tablets and other
devices than PCs These devices have multimedia -
video, audio
• Multimedia is changing - wideband, stereo, 7-1, screen
sharing
• The number of users is exploding

9. The network is reaching
and end. And a beginning.
• We have no more IPv4 addresses to allocate
• How are we going to build new cloud services, add new
devices and build a larger Internet?
• Do you want carrier grade NAT’s?
© Copyright 2010, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

10. The network is
falling apart.
• We lack a lot of knowledge about networking out there.
• The NAT and Firewall devices are just good enough to
handle a minimum level of traffic and predeterimed
applications
• Customers need to wake up. Otherwise the clouds will
be rain clouds with dangerous thunderstorms.
© Copyright 2010, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

11. The network is out of
control
There’s no ”inside” and ”outside” any more.
If there ever was.
The realtime platform requires better security.
© Copyright 2010, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

12. Good news!
There are alternatives

13. Skype
Yet another telco monopoly. Only this time,
it’s Internet-based.

14. Just joking.
Let’s take a look at real alternatives.

15. Building solutions on
IP Asterisk, Asterisk SCF and
telephony
FreeSwitch and...
Old stuff

16. IP Chat Screen
Video Games
telephony Presence sharing
System
integration
Social
networks
RSS ?
SIP
Internet & IP networks

17. Welcome to the
realtime Internet.
The social
multimedia
network.
SIP
Internet & IP networks

18. Welcome to the
realtime Internet.
This is not just
about telephony.
SIP
Internet & IP networks

19. What is SIP?
• A protocol to find each other in
real time
• A protocol to manage sessions
between people
REALTIME
I T ’ S A L L A B O U T N OW.

20. Building this requires
a bit more than good
old SIP INVITE
200 OK
ACK

21. Learn new things.
GIN - pbx
ICE
registrations
SIP outbound SIP identity
WebRTC
GRUU RTP multiplexing
TLS MSRP

22. WebRTC
The new kid
on the block
• Cooperation between the W3C and IETF
• Bidirectional media between browsers
• Audio, video, text
• The platform for new services
• SIP in the browser (listen to Iñaki!)

23. WebRTC The vision
• An open service where we can
communicate freely with each other from
any device and any network
• First wave propably just between users of
the same web service
• Many of us wants open federation - it
requires a shared address space and
protocol

24. WebRTC Dependencies
• The architecture is still discussed
• Will propably depend on ICE, which means
dependencies on TURN/STUN as well
• OverSIP and jsSIP presented here today is a
good example of the future!

25. WebRTC WebRTC
• Platform for new cool • We’ll still have NAT
applications and firewall issues
• Built into the web • Will it be standardized
browser enough
• Security-enabled from
• Will we need SBCs to
start
handle the
connections?
+ -

26. ICE
ICE
Taking us out of the NAT darkness.

27. ICE Ice: Show me yours, and
I’ll show you mine.
NATted network
• All UAs find all their
SIP addresses, using STUN
SIP
Alice • May allocate an address
using TURN
• Sends all addresses as
candidates in SDP
• Receipient tries to contact
addresses and select best
media path
Turn • Supports both IPv4 and
IPv6
Bob
Media relay • IPv6 UAs allocate IPv4
NATted network Turn address
Cecilia

28. ICE
ICE
• Finds the best media path • Takes time at call
between two nodes setup
• Supports IPv4 and IPv6 • Hard for b2bua’s to
deployments support
• Binds SIP+SDP to actual
• Complex for
media
developers
• Used by Microsoft, Apple
(FaceTime), Google
+ -
Hangouts

29. Globally Routable device addresses
GRUU
Example.com
SIP
SIP
Alice
The AOR for Alice and Bob
belongs to their proxy. Bob has one Builds on SIP outbound
AOR for multiple UAs. UUID URN’s.
SIP
astritech.com
Bob
The GRUU points to a device. It is allocated
NATted network at registration and belongs to the domain, thus
Bob can be used globally!

30. GRUU Device URIs
• Makes transfers and • Complex RFC
other SIP in-dialog
functions work across • Adds a bit of
domains complexity to the UA
• A Contact without IPv4/
IPv6 dependencies
• Opens up for multi-
device calls (SPLICES)
+ -

31. IDENTITY
RFC 4474- SIP identity
• A domain implements an authentication service
that signs an identity on outbound messages
SIP
• Users identify themselves to domain server
(proxy) by other means (Digest, TLS)
Identity
• Signs the From: URI (AOR)
Local Local
SIP
SIP HTTP auth or
TLS auth
AUDIO

32. IDENTITY
Can this be connected
to federated identity?
• Shibboleth/SAML 2.0/FEIDE
• Draft exists, but no progress. Needs work.
• OpenID
• Oauth

33. IDENTITY
SIP identity
• Enables trust of identities • Complex RFC
between domains
• PKI is always
• Adds integrity check of complicated
SIP messages
• Not many
• Together with TLS for
implementations, thus
connections, part of trust
platform for an open very few tests of
federation interoperability
+ -

34. What’s missing?
Proper solution Implementations
for TLS and a PKI.of DTLS SRTP
Customers with the
key exchange
guts to do
something
End to end different.
Management
security. of security and
configurations.

35. The next generation
realtime network.
• We’ve learned a lot in 10
years of SIP.
• Why hasn’t the IP phones
changed?
• New models coming - see Goji for
smartphones, Skycall on
Norwegian and Panasonic Android
SIP phones

36. Ask yourselves the
important question.
Have you become one of the
old PBX-huggers?
The ones that just doesn’t let go.
Why doesn’t mobile office solutions
have blinking lamps and all that stuff?

37. Summary
• IETF realized that NAT is a big issue and
developed GRUU, ICE and Outbound. Use it.
• For security, there’s TLS, S/MIME and SIP/Identity
• A properly architectured SIP architecture can
handle much more than telephony.
• Look at Skype, Microsoft Lync and AG Projects
product suite for inspiration.
• Only the last company in the list is using
open standards!

38. REALTIME
I T ’ S A L L A B O U T N OW.

39. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
The road ahead:
10 bullet points
to remember!

40. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
1. Use Open Network
Protocols
TCP/IP * SIP * XMPP
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

41. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
2. Use Open Source
COOPERATIVE SOFTWARE
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

42. @
OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
3. Use e-mail style
addresses.
One address that rule them all!
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

43. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
4. Implement with
Integrity and Security
BUILDING TRUST FOR NEW SOLUTIONS
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

44. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
5. Implement green
anti-travel
solutions
VIDEO IS IMPORTANT.
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

45. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
6. Corporate Social
Responsibility
Building and connecting to
a network for everyone.
OPEN SOURCE = AVAILABILITY FOR THE 3RD WORLD
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

46. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
7. Everything is and
should be building
blocks
EVERYTHING SHOULD HAVE AN AN OPEN API
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

47. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
8. Don’t disconnect
from the world.
IPv6 NOW
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

48. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
9. Don’t wait for
demand
Deliver services to your users.
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

49. OPEN UNIFIED
COMMUNICATION
ACCORDING TO EDVINA
10. Think different.
The new telephony platform is not about telephony.
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net

50. REALTIME
I T ’ S A L L A B O U T N OW.

51. ...and for these
ideas to come true,
you’ll need...

52. Slides available soon on
slideshare.net/oej
Thank you!
Any questions?
Twitter: @oej - the rest oej@edvina.net
© Copyright 2012, Edvina AB, Sollentuna, Sweden. All rights reserved. Approved distribution only. info@edvina.net