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Yau-Hwang Kuo The Ministry of Education, Computer Center

&

Quincy Wu (solomon@ipv6.club.tw)

National Chi Nan University

Interconnecting VoIP on Taiwan Academic Network

(TANet)

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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 TANetTaiwan 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 manage

r , 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 technolog

y research and maintain the network– Information use manager group is focus on filter sys

tem, 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

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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IPOX(IP Phone Open Exchange)

TCA(Taipei Computer Association) initiated IPOX project in Feb. 2005

More than 21 ISPs have allocated 580,000 phone numbers (070xxxxxx)

「 SIP/Enum Trial 」Allocated 100,000 telephone numbers(09440xxxxx) from the government

30,000 registered users fromResearch institutes/TANet RNC/CNC

． Interop between 「 NTP VoIP Platform 」 & 「 SIP/Enum Trial 」

． Expand the user base so that all VoIP users can benefitTelecom Operators

Other IP Phone

Current VoIP Deployment in TWCurrent VoIP Deployment in TW

TANet IP Telephony Deployment in CNCTainan CNC– Scope ： All staffs in CNC & Bureau of Education have hardp

hones. – 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 hardph

ones. – 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

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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 wo

n’t support SIP until 2006.

PBX – PBX

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What Are Possible Issues

Qualification of End TerminalsH.323 vs. SIPNAT & FirewallE2E QoSIndecent Contents & Lawful InterceptionCost Saving(?)What would be the next service beyond voice– Video– Presence and Instant Message– Data Conference

End User

System Administrator

LAN Administrator

CampusNetworking

Gigapop Gigapop

Backbone

CampusNetworking

LAN Administrator

System Administrator

End User

How do you solvea problem along a path?

Hey, VoIP is not working right!

The serverIs working OK

Talk to the other guys

Everything isOK

No othercomplaints

The network is lightly loaded

All the lights are green

We don’t see anything wrong

Looks fine

I can talk with others

Not our problem

E2E Problems

Source: “End to End Performance Initiative”, Eric Boyd

Everyone says it isworking fine!

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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

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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 “def

ault 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 faul

t-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

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Operations of IPTSCGoalDaily operations & Help DeskStatistics and CDR (Call Detail Record)Develop common services required for inter-region calls (e.

g. 411 directory service)

Schedule2006.7-2006.12

Expected BenefitsSupport the Numbering Plan planned by TANet for inter-reg

ional and international VoIP call setupStatistics of inter-system VoIP callsCreation of common services

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Equipment Testing CenterGoal Build a testing center and provides testing equipment to help each RN

C 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 te

sting 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 ServerTwo hosts will be allocated– Fault-Tolerance Consideration

Help Desk Service in NOC– Manpower in NOC is allocated to constatntly monitor the stat

us of the server

Statistics of Call ProcessingRules for Call Routing– Static– Dynamic (TRIP)