Transcript 20060719_quincy_apan

Interconnecting VoIP on
Taiwan Academic Network
(TANet)
Yau-Hwang Kuo
The Ministry of Education, Computer Center
&
Quincy Wu
([email protected])
National Chi Nan University
教育部
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VoIP-related Projects in
Taiwan
NTP VoIP Platform
NTP WLAN Roaming Architecture
SIP/ENUM Forum Taiwan
NICI VoIPv6 Deployment
IPOX (IP Phone Open Exchange)
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The History of TANet
Taiwan Academic Network (TANet) was build in July of 1990.
The ministry of education and several national university
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. (about 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 5,460,000 students、
schoolteachers and office employee.
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Organization of TANet Management
TANet manager committee
– The committee make-up by the department
manager , scholar and professional comes from
Ministry of Education, Academia Sinica and district
network center , county/city education network
center
TANet technology group and information use
manager group
– The technology group is focus on network
technology research and maintain the network
– Information use manager group is focus on filter
system, guidance and build rules of guard against
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Organization of TANet Management
TANet regional network center
– There are 9 services regions in Taiwan now, and 12 national
university are chosen to be the regional network centers
TANet county/city education network center
– Each county/city ‘s department of education to be in charge of
provide the network connection 、maintain the network
center 、education training and education of information in
each level of schools in the county/city.
Organization of school network management
– Each university establish the organization of school network
management and take the responsibility of school network use
policy 、 manager、 coordinate and handling disputes
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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
International
Bandwidth (Mbps)
Internal
7,000
6,000
5,000
4,000
3,000
2,000
1,000
0
2001
2002
2003
2004
Yearly
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Current VoIP Deployment in TW
「SIP/Enum Trial」
Allocated 100,000 telephone numbers
(09440xxxxx) from the government
30,000 registered users from
Research institutes/TANet RNC/CNC
．Interop between 「NTP VoIP Platform」&「SIP/Enum Trial」
Telecom
Operators
．Expand the user base so that all VoIP users can benefit
IPOX
(IP Phone Open Exchange)
Other IP Phone
教育部
TCA(Taipei Computer Association) initiated
IPOX project in Feb. 2005
More than 21 ISPs have allocated
580,000 phone numbers (070xxxxxx)
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TANet IP Telephony Deployment in CNC
Tainan CNC
– Scope： All staffs in CNC & Bureau of Education have
hardphones.
– Amount：570 Hardphones
– Protocol：SIP
I-Lan CNC
– Scope：120 CPE (Gateway); each one has 4 FXS ports
– Amount：200 Hardphones
– Procotol：SIP
Hsinchu CNC
– Scope：All staffs in CNC & Bureau of Education have
hardphones.
– Amount：500 Hardphones
– Protocol：SIP
★ More than 10 counties/cities got Fiber
Kaohsiung CNC
to each school in TANet
– Protocol：H.323 hardphones
Interconnecting VoIP on TANet
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Where Do You Enable VoIP
End User – End User
– Video Phone – Video Phone
– Audio Phone – Audio Phone
– PC – PC
•
•
•
•
PCA
X-Lite
MSN Messenger(?)
Windows Messenger supports SIP, but MSN Messenger
won’t support SIP until 2006.
PBX – PBX
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What Are Possible Issues
Qualification of End Terminals
H.323 vs. SIP
NAT & Firewall
E2E QoS
Indecent Contents & Lawful Interception
Cost Saving(?)
What would be the next service beyond voice
– Video
– Presence and Instant Message
– Data Conference
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E2E Problems
Hey, VoIP is not
working right!
End User
LAN
Administrator
I can talk with others
Not our problem
Talk to the other guys
End User
LAN
Administrator
Everything is
OK
System
Administrator
Campus
Networking
Campus
Networking
The server
Is working OK
No other
complaints
Gigapop
How do you solve
a problem along a path?
Everyone says it is
working fine!
System
Administrator
Looks fine
Gigapop
Backbone
All the lights
are green
We don’t see
anything wrong
The network is lightly loaded
Source: “End to End Performance Initiative”, Eric Boyd
Numbering Plan
SIP URI
– sip:[email protected]
E.164 Number
– Allocate new range of phone numbers from DGT
• 0944020678
• Scarce resource
– Re-use organization phone numbers
• +886-3-5712121-31924
• 4.2.9.1.3.1.2.1.2.1.7.5.3.6.8.8.e164.arpa. (ENUM mechanism)
ISN (ITAD Subscriber Number)
– 4257*260
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Task Force Working Items
Service Trial on Different Models
– Consistent Numbering Plan
– Deployment Scenario
Common Template of Equipment Spec
– Interoperability Testing Facility
Knowledge Dissemination
– Mailing List + Archives + Search Engine
– Workshop
– Tutorial
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TANet
IP Telephony eXchange
Goal
 As the logical topology of Routing each RNC will configure its
“default route” to the eXchange. You don’t need to test the
signaling between every pairs of proxy servers among all RNCs.
Schedule
 Build four distant IPT eXchange in two year inside Taiwan, for
fault-tolerance consideration.
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2006.1-6 Plan for the architecture, protocol and equipment requirement of IPT eXchange
2006.7-2007.6 Set up the ITPSC in Southern Taiwan and Central Taiwan
2007.1-6 Review the operations of IPTSC, and plan for the reamining two IPTSCs
2007.7-12 All four IPTSCs are set up.
Expected Benefits
 Reduce the SIP interoperability testing among RNCs.
 Consolidate TANet Numbering Plan
 Set up a fault-tolerant IPTSC system
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Operations of IPTSC
Goal
 Daily operations & Help Desk
 Statistics and CDR (Call Detail Record)
 Develop common services required for inter-region
calls (e.g. 411 directory service)
Schedule
 2006.7-2006.12
Expected Benefits
 Support the Numbering Plan planned by TANet for
inter-regional and international VoIP call setup
 Statistics of inter-system VoIP calls
 Creation of common services
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Equipment Testing Center
Goal
 Build a testing center and provides testing equipment to help each
RNC verifying the functions and interoperability of equipment
before the procurement.
Schedule
 2006.6-2006.12
Expected Benefits
 The SIP phones can call servers come from different vendors. This
testing center will facilitate the interoperability between systems
among different RNCs.
 Engineers in many RNCs are still unfamiliar with VoIP equipment.
The experience accumulated in this center will be helpful to reduce
the time needed for trial-and-error.
 Create an automatic testing flow to save the time and manpower
for equipment testing which is now executed by engineers
manually.
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Project 1: APAN SIP Server
Taiwan Academic Network would like to volunteer to
host the APAN SIP Server
Two hosts will be allocated
– Fault-Tolerance Consideration
Help Desk Service in NOC
– Manpower in NOC is allocated to constatntly monitor the
status of the server
Statistics of Call Processing
Rules for Call Routing
– Static
– Dynamic (TRIP)
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