january 23, 20071 quincy wu ([email protected]) interconnecting voip on taiwan academic network...
TRANSCRIPT
January 23, 2007 1教育部
Quincy Wu ([email protected])
Interconnecting VoIP on Taiwan Academic Network
(TANet)
January 23, 2007 2教育部
The History of TANetTaiwan 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…
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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.
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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
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Development of Network Bandwidth
Bandwidth (Mbps)
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
2001 2002 2003 2004
Yearly
International
Internal
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TANet IP Telephony Deployment
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Deployment in City Network CenterI-Lan CNC– Scope : 120 CPE (Gateway); each one has 4 FXS port
s– Amount : 200 Hardphones– Procotol : SIP
Tainan CNC– Scope : All staffs in CNC & Bureau of Education ha
ve 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
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Kaohsiung
Tainan Hsinchu
I-LanNew CNC
?
??
?
January 23, 2007 9教育部
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?
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If Everything Goes Fine …SIP Proxy Server
SIP Proxy Server
SIP
SIP
SIP
RTP
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What Happened?SIP Proxy Server
SIP Proxy Server
SIP
SIP
???
Ethereal
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Ethereal
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Not Easy for Remote Hosts
SIP Proxy Server
SIP Proxy Server
SIP
SIP
???
Ethereal
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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
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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 f
or better interaction.• Ajax is a mechanism adopted in Google Map and
Goggle Suggest to facilitate real-time update of browser display.
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System Architecture
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Screen Snapshot
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Demo
http://ipbx.ipv6.club.tw/sipmagnifier/
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Future Work
Access Control– Each manager should only be able to view th
e SIP messages of his own accounts.
Publish this tool on http://SourceForget.net
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Kaohsiung
Tainan Hsinchu
I-LanCNC
?
IPT Exchange