1. Converged Service A Dartmouth Perspective
Bob Johnson

2. Background Campus roughly one mile square
User population is about 10,000
Over 200 buildings/structures
Campus is completely wired
Currently 970 APs deployed

3. Convergence Vision Applications are converging
Collaboration & multimedia
The economics finally make sense
Focus resources to support one network
Must deliver a communications utility
Wireless IP Phones
Speech Activated communications
Streaming Video

4. The Wireless Decision-2001
Dartmouth has a history of investing in technology
Computing is pervasive
Mandated for students
“Put wireless everywhere and see what happens”

5. First Generation Deployment
Cisco Aironet 350 series (802.11b)
Over 500 APs installed
Every AP tied to the backbone
Deployed over 18 months
Coverage is ubiquitous
Approximately 2200 active users per day
Traffic types – File sharing, web,
No authentication – “Wireless Frontier”
Standards not set
Could not mandate client

6. Evolving Wireless Vision
Must deliver converged services
Same as wired
Support for emerging services
Mobility is a given
Deliver support for latency sensitive services
Wireless Network must act as a “system” with other computing resources

7. Third Generation Wireless
Develop two wireless layers
Expand 1st layer for general purpose bandwidth
Low bandwidth access (802.11b  g) to higher bandwidth
Develop 2nd layer for high bandwidth latency sensitive services (802.11a) (i.e. video, next generation voice)
Increase AP density and thus bandwidth
Power control
Built-in site survey, auto config
Load balance associations
Reduce or eliminate weak client pulling down others
Build for mobility
Provide transparent authentication/remediation for access to both wired and wireless network

8. So….What’s been Converged
VOIP
Cisco Call Mgr’s supporting hardwired, soft and handheld devices
Vocera Speech Activated communications system
Video over IP
Video Furnace encoding 62 channels, Multicast
VOD pilot to support 50 meg, concurrent-Unicast

9. Converged Device Opportunities
Handheld converged devices provide opportunity for partnerships within campus
Opportunity to solve problems for other departments
ROI often not directly realized by Computing Services
Projects require not only diverse visionary support, but fiscal as well

11. Mobilizing Dartmouth Where we are going
Campus wide access
for students 1
Wireless VoIP for faculty
and staff 2
Wired and Wireless
security monitoring
system 4
802.1x security keeps
systems secure 6
Real-time people locator
for faculty and staff 3
Wireless Video
enhances teaching 7
Secure wireless access
in lecture halls 5

12. Remote Dartmouth Wireless
Anywhere you have internet access
APs “Phone Home” through secure VPN tunnel
All remote APs have same credentials
Secure, authenticated access to converged communications resources
VOIP, Video, traditional data
Virtual Office(your campus office in your home)
Traveling Faculty, Staff, Students

13. Automatic Real-time Location Tracking
Multi-point triangulation enables fine granularity (within 3 ft)
Real-time location service tracks radio source as it moves
Eliminates manual walkabout to fingerprint RF propagation
Independent of the radio device and drivers
RSSI = X
The device/user is located
RSSI = Z
RSSI = Y

14. Policy-based Network Access
Service Delivery Based on Who, What, When, Where and How
Identity aware I am Matt Green, the employee
Device aware I am Matt Green with a laptop with no viruses or worms
Traffic aware I am Matt Green with a laptop using a soft phone
Time aware I am Matt Green with a laptop using a soft phone at 1:40 pm
Location aware I am Matt Green with a laptop using a soft phone at 1:40 p.m. in the clinic

15. Virtual Attendants
Use location dependent services to “push” content to users
Concept of who/where/when
First implementation is campus tour with Vocera Badges
Working with Library to provide stack attendant services in un-staffed locations.
Other possibilities are campus tours, security/escort services

16. Conclusion
While it is the responsibility of Computing Services to provide platforms to provide layered services, the entire enterprise stands to gain from all that convergence to offer.
For these convergence efforts to be truly successful, a true partnership needs to develop between CS and the community at large.