Digium 'Demo & Eggs' Breakfast Presentation slides, as shown at WebRTC World III on November 21, 2013. These slides we used in a presentation which also featured a live demo of a WebRTC-enabled Asterisk appliance (based on a Raspberry Pi just for fun) serving a web page that contained the JsSIP soft phone. Audience members were able to connect to our WiFi network and use Chrome or Firefox to browse to this page, and them make a call to each other, to a Digium phone, to hear a message from Allison (THE Voice of Asterisk) or to go into a conference call with each other.

1. Demo and Eggs:
Asterisk and WebRTC
David Duffett
Working with the Worldwide Asterisk Community
Steve Sokol
In charge of cool stuff, a law unto himself

2. Our agenda for today
 The big lie about Asterisk
 WebRTC and Asterisk
 Typical deployment scenarios
– Gateway functionality
– Media facility
 How to create your own FREE WebRTC gateway
 Demo components
 The actual demo
 Recap of the key points
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3. The BIG lies
 General:
 1. I will love you as much tomorrow morning as I
do tonight
 2. The check is in the mail
 3. I am from HR, and here to help you
 About Asterisk:
 Asterisk is just an Open Source PBX
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4. About Asterisk
 The most popular and established Open Source
Communications Engine
IN THE WORLD!
 Native support for IP telephony, and almost any
legacy connection using adaptors (like Digium
cards)
–
–
–
–
PRI
BRI
FXO
FXS
 A successful Open Source Project by virtually
any measure
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5. About the Asterisk Community
 Asterisk is an Open Source project
 This means anyone can contribute to the
progress of the project
–
–
–
–
–
Writing code
Fixing bugs
Test functionality
Writing documentation
Helping others
 It also means that Asterisk has been
strengthened in many directions by those that
had the interest and motivation to do it
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6. What Does Asterisk Do?
 Plumbing:
 Protocol Implementations
 Session Management
 Media I/O
 Intermediary Services
 Media Management
 Applications
 Call Routing (“Dialplan”)
 Automated Attendant
 Voicemail
 Directory
 Conference Bridge
 Call Parking
 Queues
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7. How Do You Use Asterisk?
 As An Application Unit Itself:
 Hand-Crafted “One-Off” Implementations
 Dialplan Script Programming + Configuration Files
 PBX, VoIP Gateway, IVR, ACD, Etc.
 As A Tool-Kit / Engine:
 Use External Interfaces: AGI, AMI
 “Wrap” Asterisk To Manage
 Build Custom Applications & Solutions
 Create Communications Products
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8. Phones For Asterisk
 Digium D40, D50, D70 – Built For Asterisk Systems
 Super Simple Provisioning
 Discovery via mDNS / Bonjour
 Uses SIP channel
 Integrated Applications:
 Visual Voicemail
 Visual Call Parking
 Queue Management
 Presence / Status
 Call Deflection / Direct VM
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9. In Asterisk 11
 WebSockets Support For SIP
 SIP uses multiple transports: UDP, TCP, TLS and now WS, WSS
 New protocol used by web applications for bi-directional,
asynchronous communications
 Integrated into onboard HTTP server in Asterisk
 WebRTC support, including NAT traversal
 ICE
 STUN
 TURN
 Support for G.711a/u law
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10. NEW In Asterisk 12
 Opus and VP8 support
 Pass-through only at this point
 Very importantly…
 ARI – This is a new RESTful API for app developers to use
Asterisk through
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11. Typical deployment scenario
 Connectivity to legacy equipment and networks
 GATEWAY from WebRTC to
 SIP
 PRI
 FXO/FXS
 IAX2
 And many, many more!
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12. Typical deployment scenario
 Providing the intelligence and comfort…
 MEDIA SERVER
 Prompts
 Tone Detection
 Tone Recognition
 Recording
 Conferencing
 Routing
 Call data manipulation
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13. Case Study – Instant Solutions
 Instant Solutions, Brazil
 Product – Instant Voice
 10 years - using Asterisk since 1.0
 Custom CC ACD solutions, small to large enterprise
 200 customers worldwide
 Mission critical Applications
 Originally tried WebRTC integration by downloading Chrome source
code and writing a new channel driver for Asterisk
 Moved to Asterisk native WebRTC support to simplify deployments
 Instant Voice WebRTC – in production, and deployed!
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14. Case Study – Instant Solutions
 Instant Voice WebRTC was showcased at
WebRTC World II – remember the Brazilian
Football shirt?
 Deployed in a Brazilian comercial Bank
 100 Agents using Chrome
 Uses WebRTC DATA channel
 Uses the data channel - callerID, customer Info, CRM
 Queue data and everything in the browser
 Before needed 2 apps, but now everything is in the browser!!
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15. Case Study – Instant Solutions
Contact Paulo Mannheimer
at Instant to learn more:
paulohm@instant.com.br
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16. Your recipe for a FREE WebRTC demo
 Get a Linux box
 Add ‘libsrtp’
 Add Asterisk 11.x.x or 12.x.x Beta
 Follow the instructions to enable WebRTC support at:
 wiki.asterisk.org
 Enable WS,WSS transport
 Enable ICE support
 Some SIP settings
 Add a basic dialplan
 IT’S ALMOST TOO EASY!
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17. Now for a WebRTC demo on the
the Raspberry Pi !!
 What is the Raspberry Pi?
 A small but fully functional ARM based computer that runs Linux
 Originally developed to allow young people to start programming
at a very low cost ($40 US)
 A number of Asterisk implementations, including PBX in a
Flash/Incredible Pi by Ward Mundy
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18. More about the Raspberry Pi
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19. This is my Pi
Rasberry Pi – Model B
512 Mb RAM
Asterisk 11.4.0
DPMA
(Digium Phone Module for Asterisk)
DHCP server
WiFi Access Point
It‟s on the Digium table
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20. Asterisk is running an HTTP server,
Serving a JsSIP soft phone
 Connect to WiFi network ‘Asterisk_Pi’ or ‘Asterisk_Pi_EXT’
 Browse to http://192.168.42.1:8088
 Enter credentials into the ‘User’ field:
 702, 703, 704
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21. This is what you will see next
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22. Remember to click „Allow‟
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23. If everything works…
 After a short pause, you should hear a special message
 From the lovely Allison – THE Voice of Asterisk
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24. Big Thanks to the authors of JsSIP

http://jssip.net
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25. RetroRTC
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26. What questions do you have?
?
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27. Summary
 Asterisk is a mature and established Open Source Communications
Engine
 WebRTC support has been in since Asterisk 11.0.0
 Your WebRTC implementation is FREE
 Gateway to anything else that Asterisk supports
 All the media services you need
 For Asterisk-related stuff, ALWAYS THINK DIGIUM
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28. Thanks!
www.asterisk.org
@dduffett @digium.com
@ssokol @digium.com
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