1. 5/30/2000 1 The liveaddressbook: Telephone Calls with Presence Allen Milewski & Tom Smith allen@att.com / tsmith@research.att.com

2. 5/30/2000 2 Location Availability Anything needed to negotiate the conversation Identification of Caller Topic of Call Eagerness to Talk /Excitedness Mood Friendliness Urgency of Content Estimated Length of Call Apology (e.g. the hour). Live addressbook: Personal Presence Is: [linguistic context]

3. 5/30/2000 3 How Much Information ?( Informativeness vs Privacy) How to keep Information Up-to-date ? (Overhead vs Control) How to Convey the Information ?( Publish/Subscribe vs Situated Negotiation) Live addressbook Personal Presence– Design Issues

4. 5/30/2000 4 Helps control telephone calls/teleconferences: from anywhere, with any telephone via wireless PDA or desktop browser from Personal Presence Listings: – current reach number – availability – personal message Telephone caller’s lack information about the people they want to call => unwanted interruptions and missed connections What problem does it solve? Live addressbook What is the live addressbook?

5. 5/30/2000 5 Click2Dial Server Phone network Presence Server Called Parties Calling Party Live AB Server Wireless PDA Desktop Browser AT&T Pocketnet Service “Instant Messaging / Buddy” technology Web-based conferencing technology Live addressbook

6. 5/30/2000 6 Reducing the Overhead of Being Available Web Page Preparing for talk Home Updated: 1hr.23 min ago

7. 5/30/2000 7 Ubiquitous, Multiple-Device Access Hint-Based Coaxing Wireless PDA Desktop Browser Telephone Liveupdate-PC Reducing the Overhead of Being Available Overhead Reduction Methods

8. 5/30/2000 8 Reducing the Overhead of Being Available PalmPilot/Pocketnet Interface

9. 5/30/2000 9 Ubiquitous, Multiple-Device Access Hint-Based Coaxing- user is “coaxed” to change Personal Presence Info when:  logging on from the PC at a location different than the “current” location  connecting from the Mobile PDA and a different location is “current”  starts typing on a PC (with liveupate-pc) and another location is “current” Reducing the Overhead of Being Available Overhead Reduction Methods

10. 5/30/2000 10 Live addressbook: A small-scale trial Three Workgroups: Group E -remotely located with much moving -“high-tech” developers, designers collaborating on a single system weekly, scheduled teleconferences -heavy use of email and Instant Messaging Group P -co-located with frequent travel -range of job functions and technology abilities. -heavy use of telephone & email, not IM Had Palm/Pocketnet PDA equipment Group M -remotely located, but less collaboration - manager/employee relationship

11. 5/30/2000 11 Design Insights How Much Information ?( Informativeness vs Privacy)  Personal Location and Availability Information are both useful for telephone communication. Telephone “buddy lists” can peacefully co-exist with standard personal phonebooks How to keep Information Up-to-date ? (Overhead vs Control)  Users will attempt to keep Personal Presence Information current, especially if the overhead is low.  Support for communication and Presence updates through multiple access methods is useful.  Mixing auto-detection and manual updating is a useful (and low-risk) overhead reduction strategy.  Personal Availability Information is much more difficult to keep current than Location.

12. 5/30/2000 12 Design Insights How to Convey the Information ? ( Publish/Subscribe vs Situated Negotiation)  Publish/Subscribe works well for Location Information  Situated negotiation of Availability may be superior to the “publish/subscribe” model.

13. 5/30/2000 13 Ring! Social Information Social Information VoiceRing: An Example of simplified situated negotiation