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Next Generation  9-1-1

Next Generation  9-1-1. Android Client. Anuj Sampathkumaran Jinhyung Park Pranay Dalmia. Features   . Real-time Text Instant Messaging Geo-location (PIDF-LO) Image transmission. Application flow. Instant Messaging. Library used: SIP Stack: MJSIP 1.6

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Next Generation  9-1-1

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  1. Next Generation  9-1-1 Android Client • Anuj Sampathkumaran • Jinhyung Park • Pranay Dalmia

  2. Features    • Real-time Text • Instant Messaging • Geo-location (PIDF-LO) • Image transmission

  3. Application flow

  4. Instant Messaging • Library used: • SIP Stack:MJSIP 1.6 •  Used SIP MESSAGE method to send instant-messages over UDP.  • Listen for 200 OK from the server. • Message Time-out within 4 seconds if no response from the server. 

  5. Real Time Messaging • Library used: • For SIP Stack • MJSIP 1.6 • For User Session Control • Referenced SipDroid(Android VoIP Client) to implement UserAgent Class • For T140 Protocol • Used SIPc T140Handler Class

  6. Image Transmission • Uses the SIP protocol (MJSIP Stack 1.6) to send images.  • Custom camera interface to enable one-click send. • Invoke the Camera to get the image in JPEG format  • Set the content type of SIP message to "image/jpeg" • Switch the protocol to TCP • Ensure that JPEG image is sent only as Binary data.

  7. Geolocation • Application listens for location update call backs from the Android run-time.  • Once notified, construct a PIDF-LO using the location data.  •  Send this with the first Instant Message or Real-time text by sending a multi-part message. • After this, keep buffering the location updates.  • Send this data with the next outgoing instant message and remove from buffer.  • This ensures we do not send redundant PIDF-LO objects to the server. 

  8. Application Layout: IM

  9. Application Layout: RTT

  10. Conclusion What we learned? • SIP Stack • Android Development Environment

  11. Next Steps Long-term • Improve User Interface • Improve Real-Time Text Stability • Additional Features • Automatically Notifying to friends by using Address Book • Sending Video

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