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THU 10/15 – 11:00-11:35am Cira B. Skype for Asterisk - SFA What You Can Do. Me. Tim Panton - Westhawk Ltd PhoneFromHere.com Disclaimer - I don't speak for Digium or Skype. What is SFA - Skype for Asterisk?. Another channel - like chan_iax or chan_h323
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THU 10/15 – 11:00-11:35am Cira B Skype for Asterisk - SFA What You Can Do
Me • Tim Panton - Westhawk LtdPhoneFromHere.com • Disclaimer - I don't speak for Digium or Skype
What is SFA - Skype for Asterisk? • Another channel - like chan_iax or chan_h323 • Allows your Asterisk to speak Skype's protocol • Costs $66 per channel • Includes G729
Demo: Call from Skype to Asterisk • Call connects to Demo exten at Digium SFA Digium Skype protocol Demo server Skype user
Why Bother with Another Channel? • What is wrong with SIP ? (Don't get me started) • Skype goes through firewalls • Skype is encrypted • Skype has 400 Million account • Skype has 18 Million users on line _now_
How It Works • Separate process - chan_skype module • RTP - packet to packet bridge possible • Low latency • Good Quality • Skype never transcodes - endpoint have to be compatible
How It Works - Diagram chan_skype Internet ResSkypeForAsterisk 400M Skype Users skyhost(s) Skype Protocol Your asterisk server
Skype as Softphone for Asterisk • Skype is an excellent softphone • Often pre-installed • Multi OS • Good echo canceller
Demo: Call from cell phone into SFA dial exten • Goes to my Skype SFA Skype protocol PSTN Distributed Skype user Customer
Richer Data • Skype for Asterisk carries fields with it • language: ISO language code (en_US) • phone_home: Home phone number (+15555551212) • email: E-mail address (joe@example.com) • homepage: Homepage (http://www.example.com) • about: Short self-description (I am a Software Engineer) • birthday: Birth date (YYYYMMDD format) • gender: Gender (m/f) • avatar: Avatar filename, 96x96 JPEG (/var/lib/asterisk/images/myavatar.jpg) • etc • Auth done by Skype network
Demo: Call from my Skype to ZipDX • Conf id in 'topic' and Caller id preset Web Page Caller id + exten ZDX Skype: URI Conference server Topic + skype id Skype user
Presence Data • Skype holds presence data for all users • SFA lets you see/use it
Demo: JavaFX reflecting user status • Switch on iphone - user presence changes. SFA Skype protocol Dynamic Webpage Webserver Skype user
Endpoints Aren't Just the Skype Desktop Client • Mobile devices • 3 phone • iPhone client • hard phones • Skype for SIP (shoretel, cisco etc)
Demo: ???? • To Be Determined.......
What is Wrong with Skype • Proprietary protocol • Messy to firewall well • No 'islands' • Have to be connected to public internet
What is wrong with SFA • Missing text • Missing video • Missing SILK • Price? • Can't have 2 calls from A->B • Must use Business control Panel
thp@westhawk.co.uk tim@phonefromhere.com twitter.com/steely_glint Questions?