WebRTC for Beginners Webinar Slides

WebRTC For Beginners
Andrew Prokop
Director of Vertical Industries

2
Agenda
> What is WebRTC
> Uses
> Under the Covers
> Tools
> Issues
> What’s Next

3
What is WebRTC
> Web Real-Time Communications
> Plug-In Free
> Application Free
> Browser to Browser Media
– Voice
– Video
– Data
> A standard from W3C and IETF

4
Markets
> Healthcare
> Higher Education
> Customer Service
> Conferencing
> Social Media
> Customer Portals
> Etc.

5
Give Me a Few Reasons
> Viruses / Malware / Industrial Spying
– Growing reluctance to run plugins or new software
> Need for Rapid Development
> Embedded Communications
– Add communications to the tools and systems that require it
> The Internet of Things

6
A Few Real World Examples
> Unify Circuit
> MindMe
> LiveNinja Katana
> Cisco Spark
> WhatsApp (somewhat)
> Facebook Messenger (mobile version)
> OnSIP (hosted VoIP)
> Vidyo VidyoWorks
> Interactive Intelligence PureCloud

7
MindMe
http://www.nojitter.com/post/240171546/mindme-webrtc-for-the-greater-good

8
Click to Call
Amir Zmora
VP Alliances & Partnerships
AudioCodes
Mobile: +972-54-7769603
Call my Lync extension using WebRTC

9
The WebRTC Stack
WebRTC API
Identity
SDP
ICE / STUN / TURN
Security
Codecs

11
The WebRTC API
> An Extension to HTML-5
– RTCRtpSender, RTCRtpReceiver, etc.
– Standalone and Embedded Web Browsers
> Standard Tools
– HTML for display
– JavaScript for WebRTC Objects

12
<!DOCTYPE html>
<html>
<head>
<title>My WebRTC application</title>
<style type="text/css">
div#lVideo {
width: 45%;
height: 200px;
background: black;
float: left;
}
</style>
<script type="text/javascript"src="myrtclib.js"></script>
<script type="text/javascript"src="myrtcadapter.js"></script>
</head>
<body onLoad="onPageLoad();">
HTML

13
WebRTC Signaling
Whatever you want it to be!
> WebSocket
> XHR / Comet
> XMPP / Jingle
> SIP via JsSIP
> Smoke Signals
Flexibility by design

14
Media
> Defined by Session Description Protocol (SDP)
– Just like SIP!
> Audio Codecs
– G.711 Narrowband Audio
> And possibly iLBC and iSAC
– Opus Wideband Audio
> Video Codecs
– H.264 and VP8 (headed towards VP9)
> Separate Point-to-Point Data Channel

15
Opus
> Bit-rates from 6 kb/s to 510 kb/s
> Sampling rates from 8 kHz (narrowband) to 48 kHz (fullband)
> Frame sizes from 2.5 ms to 60 ms
> Support for both constant bit-rate and variable bit-rate Audio
> Support for speech and music, mono and stereo
> Dynamically adjustable bitrate, audio bandwidth, and frame size
> Good loss robustness and packet loss concealment (PLC)

Ah, but what about firewalls and private
IP addresses?

19
Security
> Signaling
– DTLS (Datagram Transport Layer Security)
– Think HTTPS for UDP
> Media
– SRTP

20
Identity
Browser is configured with identity provider(s) for the user
> User “logs on” using protocol downloaded from identity provider
> Browser gets an assertion from identity provider that binds with DTLS
fingerprint to the identity such as aprokop@arrowsi.com
> The calling JavaScript passes the assertion to the far side
> The far side’s browser verifies the assertion with identity provider and checks
that DTLS fingerprint matches the assertion
> Browser displays “secure to aprokop@arrowsi.com”

21
Challenges
> WebRTC is still in flux
> No defined signaling protocol
> Not all parties are on board
– Apple and Microsoft still not fully onboard
– Microsoft has proposed competing/complimentary technology -- ORTC

22
Taming the Beast
> 99 (and counting) WebRTC SDKs and Toolkits
– 39 focused on mobile devices
– 34 focused on messaging
> 18 Open Source Projects

23
I
n
t
e
r
n
e
t
HTML 5
Consumer
Facing Web
Application
Make Call
SM SMSM
SM SM
SM
Breeze
Breeze
Breeze
Web
RTC
Media Services
(AMS)
SIP/H.323
Agent
STUN/
TURN
Avaya SBC-E
WebRTC
Agent
WebRTC
Media
Reverse
Proxy SIP
SIP
WebRTC Snap-In
STUN/
TURN
Avaya SBC-E
Customer
WebRTC
Media

24
AudioCodes WebRTC Gateway
Access SBC
Transcoding GW
(Optional)
SIP/WebSockets
ICE/DTLS
Opus/UDP/SRTP

25
What’s Next
> Specification will solidify
> Multiparty media
> Widespread IoT adoption
> Middleware (e.g. media stream recording)
> Better statistics and reporting
> ORTC and WebRTC will merge
> Apple will finally make up its mind

WebRTC for Beginners Webinar Slides

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