1. Architecture of Community Based ICT Infrastructure
Onno W. Purbo

2. References http://sandbox.bellanet.org/~onno/
Mailing List

3. After 10+ Years .. 4+ Million Indonesian Internet Users
2500+ WiFi outdoor installations
2000+ CyberCafes
1500+ schools on the Internet
Not much gov’t funding & support
No World Bank, IMF funding
Mostly self-finance

4. The Architecture

5. Key Features
Don’t Have To Rely
On Telco’s Existance

6. Key Features
Use “Unlicensed” Band
2.4GHz & 5.8GHz

7. 2.4GHz Usage in Indonesia 2500+ Installations
Virtual No Government Support
Definitely No World Bank Funding
All Community based
2500+ Internet Cafes / Telecenters
1500+ Schools

8. Key Features
Neighborhood Network
To Reduce Cost

9. Let Us See Some Details

10. Details
US$70-80
Taiwan Made
Access Point

11. Details
US$30-50
WLAN Cards

12. Details
US$10-30
Homebrew Antenna

13. US$200
Internet Telephony
Gateway

14. 16 lines Office PBX

15. Some Details on VoIP Freeware Gatekeeper (Phone Switch) PC to PC
PC to Internet Telephony Gateway (ITG)
PC to PBX
Use Telco Phone Number  ..

16. Some Indonesian Facts 2500+ Registered Users
2-3 Times Unregistered Users
150+ Gatekeepers (Phone Switches)
Major Gatekeepers Handle 1000 calls / day
All home made by volunteers  ..
All Started First Week January 2003

17. Traditional & Legal Setup

18. Traditional & Legal Setup
Home Made Gatekeeper
Using Free Software

19. Create Number
6288 Area Code

20. The GNU “Free” Gatekeeper

23. Status Port of Gatekeeper

24. Connect Internet Telephony Gateway

25. “Borrow” Telco Number

26. Danger Zone