50 real time text to enrich text communications
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50 real time text to enrich text communications

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50 real time text to enrich text communications 50 real time text to enrich text communications Presentation Transcript

  • Enhancing Text Conversations WithReal-Time Text Technology Jon Azpiroz, Elisa Martín CaroMaría Fernanda Cabrera, Silvia de los Ríos Karel Van Isacker AEGIS Workshop and International Conference, Brussels
  • The background● Voice communication ● Not possible for everyone ● Alternative manners (in the past ICQ, now AOL IM) ● But what about mobiles?● Quest for alternatives to traditional voice telephony that could be accessible across desktop and mobile communications devices. AEGIS Workshop and International Conference, Brussels
  • Background Of Text Communications● TTY ● the device for the deaf (TDD) or teletypewriter (TTY) (1964) (also used for people with speech impairments) ● Problem: different textphone standards, need for landline AEGIS Workshop and International Conference, Brussels
  • Background Of Text Communications● SMS ● Advantages – Used by the hearing impaired community. – Text-based, easy to use, affordable and mobile. – Vibrating function of the handset alerts the user about a message. ● Disadvantages – Unreliable system – Transmission delays – Cost of the messages AEGIS Workshop and International Conference, Brussels
  • Increase interactivity● Instant Messaging (IM) for mobile devices ● More interactivity as users can exchange messages faster and more efficiently. ● IM Messages are cheaper than SMS. ● Problem: lack of standardisation (BlackBerry, MSN, Google, AOL, Yahoo, ICQ, FaceBook, WhatsApp,…) – Few IM clients work with different networks (Pidgin for Win, InstantBird for Linux) ● Users cannot interrupt each other AEGIS Workshop and International Conference, Brussels
  • Real-time Text● Real-time text (RTT) is conversational text that is sent and received on a character by character basis.● A more natural, bi-directional flow of conversation takes place.● Pioneered by ICQ in 1996. AEGIS Workshop and International Conference, Brussels
  • RTT protocol status● Usage of call control protocols for RTT communications 100 92,3 90 80 70 60 50 40 30,8 30 20 10 7,7 0 SIP H.323 Unknown AEGIS Workshop and International Conference, Brussels
  • RTT protocol status● Usage of transport protocols for RTT communications 90 84,6 80 70 60 50 40 30 20 15,4 10 0 ToIP Unknown AEGIS Workshop and International Conference, Brussels
  • RTT protocol status● Usage of presentation protocols for RTT communications 100 92,3 90 80 70 60 50 40 30 20 10 7,7 0 T.140 Unknown AEGIS Workshop and International Conference, Brussels
  • RTT Protocol Status ToIP T.140RFC4103 RTP UDP IP AEGIS Workshop and International Conference, Brussels
  • Are there any restrictions?● Network Address Translators (NAT) SIP headers SIP headers SIP Priv. IP 192.168.1.2 SIP Priv. IP 192.168.1.2 Private IP address NAT Public IP address IP 192.168.1.2 IP 80.57.12.68● May provide non-routable contact information● Solutions: ● Server side: STUN / TURN servers to obtain public IP address ● Client side: SIP ALG to remove private addresses AEGIS Workshop and International Conference, Brussels
  • Are there any restrictions?● Firewalls Port 5060 + media Port 5060 + media SIP comm. ports X SIP comm. ports FW HTML Port 80 HTML Port 80● May block SIP port (5060) or media communication ports● Solutions: ● Client and/or server side: tunneling ● Client side: SIP ALG to communicate with the firewall to open ports AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● Based on J2ME ● wide availability of the application is one of the most important requirements. ● Roughly 78% of the mobile phones sold in 2010 were inexpensive feature phones that run the Java Micro Edition (Java ME) environment. ● Application will be compatible in mobile devices with different OS such as Symbian or BlackBerry. AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● Functionality ● User should login with a user name and password to start using the applications. ● Once registered, the application provides three main functionalities: make / receive real-time text calls, see the call logs and manage the RTT contacts. AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● Functionality ● Select existing contact or type directly the RTT address of the other user. AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● Functionality ● Once the call is accepted by the other user – 2 text boxes appear – upper one show what the remote user is typing – lower box shows what user of device is typing. AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● User testing ● Spain, Belgium, Sweden, and the United Kingdom ● 26 users with hearing impairments ● 11 experts and 11 tutors● Feedback overall positive, and desire to have this functionality directly embedded in IM they use now● But: 2 window conversation is new AEGIS Workshop and International Conference, Brussels
  • Real-time Text brought to the mobile● Next version (by August 2012) ● Chat based user interface (both conversations shown in same screen). ● New modalities of communication. ● Character-by-character, versus word-by- word. ● New client will be developed for LWUIT Java devices. This will make RTT compatible with touch screen devices. AEGIS Workshop and International Conference, Brussels