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Quincy Wu (solomon@voip.tw)

Interconnecting VoIP on Taiwan Academic Network (TANet). Quincy Wu (solomon@voip.edu.tw). The History of TANet.

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Quincy Wu (solomon@voip.tw)

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  1. Interconnecting VoIP on Taiwan Academic Network (TANet) Quincy Wu (solomon@voip.edu.tw) January 23, 2007

  2. The History of TANet • Taiwan Academic Network (TANet) was build in July of 1990. The ministry of education and several national universities constructed the TANet to support education and research. • The TANet is aim to combine and provide the network to each level of schools and research center in Taiwan. Therefore the office staff of the research center, students and schoolteachers are able to learning, studying and research through the network. And have a chance to build a collaboration mode of information shearing. • Base on the TANet, each level of schools build the school network and connected to the internet with whole country and whole world. • TANet have impetus to education of information in elementary school and junior high school ，Learning and develop form the Internet and the information environment of lifetime learning；To carry out the computerize of national education administration；Providing research of education、life use etc… January 23, 2007

  3. TANet Serve To: • Each level of school, include : elementary school 、junior high school 、 high school 、vocational school、special education、further education 、universities. (4,946) • Internal education and research department (16) • Library and Cultural Center (41) • The departments of the ministry of education and government. (31) • TANet served about 5 million students and 460,000 school teachers and office employee. January 23, 2007

  4. The Development of Network Bandwidth • Internal Network Bandwidth • 2001: 155 Mbps • 2002: 622 Mbps • 2003: 6000 Mbps • 2004: 6000 Mbps • International Network Bandwidth • 2001: 100 Mbps • 2002: 180 Mbps • 2003: 310 Mbps • 2004: 3000 Mbps January 23, 2007

  5. International Bandwidth (Mbps) Internal 7,000 6,000 5,000 4,000 3,000 2,000 1,000 0 2001 2002 2003 2004 Yearly Development of Network Bandwidth January 23, 2007

  6. TANet IP Telephony Deployment January 23, 2007

  7. Deployment in City Network Center • I-Lan CNC • Scope：120 CPE (Gateway); each one has 4 FXS ports • Amount：200 Hardphones • Procotol：SIP • Tainan CNC • Scope： All staffs in CNC & Bureau of Education have hardphones. • Amount：570 Hardphones • Protocol：SIP • Kaohsiung CNC • Protocol：H.323 hardphones • SIP-H323 gateway will be deployed ★ More than 50% counties/cities got Fiber to each school in TANet January 23, 2007

  8. New CNC Tainan Hsinchu ? Kaohsiung ? ? I-Lan ? January 23, 2007

  9. Current Issues • Interoperability Between SIP Servers • You can expect that every vendor claims that they follow RFC 3261 … • Fault-Finding • Whose implementation causes the fault? January 23, 2007

  10. If Everything Goes Fine … SIP Proxy Server SIP Proxy Server SIP SIP SIP RTP January 23, 2007

  11. Ethereal What Happened? SIP Proxy Server SIP Proxy Server SIP ??? SIP January 23, 2007

  12. Ethereal January 23, 2007

  13. Not Easy for Remote Hosts SIP Proxy Server SIP Proxy Server SIP ??? SIP Ethereal January 23, 2007

  14. Some Issues • To run Ethereal, you need to have root privilege on that server • To capture all packets on the NIC • You run Ethereal on the remote server, and display it on your laptop • The server need to support X Window • Ok for most Linux servers • This approach consumes lots of bandwidth January 23, 2007

  15. Our Approach • Develop a supporting tool which • Capture SIP messages on the server • Send it to your laptop via HTTP • Ajax is adopted to support real-time update for better interaction. • Ajax is a mechanism adopted in Google Map and Goggle Suggest to facilitate real-time update of browser display. January 23, 2007

  16. System Architecture January 23, 2007

  17. Screen Snapshot January 23, 2007

  18. Demo • http://ipbx.ipv6.club.tw/sipmagnifier/ January 23, 2007

  19. Future Work • Access Control • Each manager should only be able to view the SIP messages of his own accounts. • Publish this tool on http://SourceForget.net January 23, 2007

  20. CNC Tainan Hsinchu IPT Exchange Kaohsiung ? I-Lan January 23, 2007

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