Yau-Hwang Kuo The Ministry of Education, Computer Center & Quincy Wu (solomon@ipv6.club.tw)

1. Interconnecting VoIP on Taiwan Academic Network (TANet) Yau-Hwang Kuo The Ministry of Education, Computer Center & Quincy Wu (solomon@ipv6.club.tw) National Chi Nan University

2. VoIP-related Projects in Taiwan • NTP VoIP Platform • NTP WLAN Roaming Architecture • SIP/ENUM Forum Taiwan • NICI VoIPv6 Deployment • IPOX (IP Phone Open Exchange)

3. 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…

4. 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.

5. 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

6. 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

7. 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

8. 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

10. 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 TCA(Taipei Computer Association) initiated IPOX project in Feb. 2005 IPOX (IP Phone Open Exchange) Other IP Phone More than 21 ISPs have allocated 580,000 phone numbers (070xxxxxx)

11. 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 • Kaohsiung CNC • Protocol：H.323 hardphones • SIP-H323 gateway will be deployed ★ More than 10 counties/cities got Fiber to each school in TANet

12. Interconnecting VoIP on TANet

13. 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

14. 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

15. Hey, VoIP is not working right! No other complaints Everything is OK Talk to the other guys I can talk with others Not our problem LAN Administrator System Administrator System Administrator LAN Administrator Campus Networking Campus Networking Backbone Gigapop Gigapop The server Is working OK Looks fine All the lights are green We don’t see anything wrong The network is lightly loaded E2E Problems End User End User How do you solve a problem along a path? Everyone says it is working fine! Source: “End to End Performance Initiative”, Eric Boyd

16. Numbering Plan • SIP URI • sip:chuang@mail.moe.gov.tw • 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

17. 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

18. 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. • 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

19. 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

20. 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.

21. 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)