Taiwan SIP/ENUM Trial
Project

Vincent W.S. Chen
Executive Director, TWNIC
Email: wschen@twnic.net.tw
October 1, 2003

Agenda Project Structure Phase I Trial Objectives
 SIP/ENUM Trial Architecture Application Services in Trial
 Registry/Registrar and Service Roles Services Scenario Example
 Alternatives for Enum Routing
 Future Works IPOX consortium Introduction
2

Trial Project Structure

SIP/ENUM Trial Project

Project Management

Project Planning• CCL• Project
Management TeamENUM & Number
Management0944-0xxxxx

Service Provisioning• TANet• NTPO(NBEN)• HiNet/TL• NCTU/NTHU/NTU• Sparq• EBT/APOL• TWNIC

3

TechnicalDevelopment &Support• CCL

Phase I Trial Objectives
 Time frame: 2003.03 – 2003.12
 Objectives
 SIP/ENUM Architecture/configurations testz What kind of architecture is suitable to Taiwan?
 Infrastructure Establishz Integrate multiple vendors in Taiwan.
z Telephony Service Provider
z Internet Service Provider
z Registrarz Registry Basic SIP/Enum Service Deployment

4Taiwan SIP/ENUM Trial Architecture
NCTU/NTHU/NTU

TWNIC
Tier 1 NSSoftphone(0944-0xxxxx)
IP PBXSoftphone
ISP
ISPSIP Proxy(0944-0xxxxx)(IPv4/6)

Tier 2 NS

IP Phone(0944-0xxxxx)
CCL/ITRI(IPv4/6)

IPv6-IPv4
Gateway

TANet/NBEN
SIP Proxy

LEC PBX

PSTN
Taipei Operator
EBTSignaling
Gateway

Softswitch(MGC))

Trunk
Gateway

Trunk
Gateway

Softphone(0944-0xxxxx)

Media Server

Signaling
Gateway
Softswitch(MGC)

IP PBXLEC PBX

PSTN

5Hsinchu Operator
Sparq

1. Softphone ÅÆ Softphone
2. PSTN ÅÆ Softphone

Application Services – 2003

3. PSTN ÅÆ PSTN
4. Voice Mail

TWNIC

NCTU/NTHU/NTU

Tier 1 NS

Softphone(0944-0xxxxx)

Softphone ISPISPSIP Proxy(0944-0xxxxx)(IPv4/6)(IPv4/6)

Tier 2 NS

IP PBX

TANet/NBEN

IPv6-IPv4Gateway

IP PBXSIP Proxy

Signaling
Gateway
Softswitch(MGC)

LEC pbx

TrunkGateway

Signaling
Gateway

LEC PBX

PSTN

Gateway

6Softphone(0944-0xxxxx)

Media Server

Softswitch(MGC))
Trunk

PSTN
Taipei Operator
EBT

IP Phone(0944-0xxxxx)
CCL/ITRI

Hsinchu Operator
Sparq

ENUM Server

SIP/Enum Trial –Scope Extension

SIP Proxysupported by DGT

SIP/ENUM Trial Project
SIP Phone

SIP UA
Internet

研考會 SIP Phone

DGT

SIP Phone

SIP PhoneTWNIC

NICI SIP Phone
MOECC

TCA SIP Phone

Call ServerG/W
FXO

Phone

PBX

PBX Gateway

G/W
FXO

Phone

E1 ISDN

Legacy Phone

PBX
Nortel M1

PBX

Public Switching Telephony Network7

G/W
FXO

Phone

PBX

G/W
FXO

Phone

PBX

Registry/Registrar and Service Roles
Tier 1 Registry
Registry(ENUM Service)
Tier 2 Registry& NameserverEnterprise

Tier 2 Registry& Nameserver

Tier 2 Registry& Nameserver

Registrar(s)Registrar(s)ITSP(HiNet/Sqarq/CHT…)

ITSP(TANET/NBEN)

PSTN Users

Cellular
Subscribers

Universities
NTU/NCTU/NTHU
8Enterprise
CCL/TWNIC/…

Registrar

Application
Services(ITSP/ASP)End Users

ENUM DNS Architecture
e164.arpa
e164.arpa

Tier 0Tier 06.8.8.e164.arpa
6.8.8.e164.arpa

Tier 1

Tier 1e164.arpa

1 Tier2 Tiers

2 Tiers
Multiple Tiers

6.8.8.e164.arpa

6.8.8.e164.arpa
Tier 1 Tier 1 Grouping

Tier 2NS record

e164.arpa

Tier 0Tier 0Tier 2Tier 2Tier 2

NAPTR record 9

Tier 1
Tier 2Tier 3Tier 2Tier 3Tier 2Tier 3Tier 3

Services Scenario Example
Tier 1 NS

Tier 2 NS

Tier 2 NS

TANet/NBEN

IP Phone

1Enterprise

IP Phone
SIP Proxy32IP PBX

Softphone
NCTU/NTU/NTHU
PSTN Gateway CCL/ITRI
TWNIC
HINET

PSTN
PSTN

Softswitch

Web Portal - Registrar

PCA – SIP UA

IP Phone
10Mobile phone

Alternatives for Enum routing
 6.8.8.e164.arpa
delegation issue
 setup a forward zone in
DNS server for
6.8.8.e164.arpa.
 Other alternatives

Root servers.arpa servers

nnn.e164.arpa.

e164.arpa. servers…
nnn.e164.arpa. servers

forward 6.8.8.e164.arpa
ENUM DNS

SIP proxy servers

11

6.8.8.e164.arpa.

Future Works
 Evaluate phase 1 system performance.
 Cache (TTL) issue (timely update) Zone file transfer (time delay)
 …..

 Business Operation Model Consideration
 VOIP business models
 Enum business models
 Other issues: authentication, privacy, security, etc..

 New Services Development
 MMS
 IMS
 iFax
 …

 Alternatives for Enum Routing and International
cooperation
12

IPOX (IP Phone Open eXchange)
Consortium
Initiative for IP Phone Commercial Deployment Promotion
in Taiwan

Taiwan SIP/Enum Forum

Introducing
Japan
Experience

ISP，TANet，GSN

SIP/Enum VoIP
Demonstrative Site

IPOX Consortium

CommonNumbering
SystemTaiwan
SIP/EnumTrial Network

Promotional Activities
Technology Proliferation

T.S.G. formiscellaneousTechnical issue

Regulation
Modification
Proposal
14

Interflow with
VoIP Forum(manufactures)Major goals of IPOX As an initiative of triggering the merge of Telecomm andInternet Services through promoting IP Phone services togeneral public.
 The tentative goal of IP phone deployment are
At least 3 local ISP will provide “070” based SIP IP Phone services
before the end of 2003
 The total number of IP Phone subscriber may exceed half million by theend of 2004.
 Provide new growth momentum for local Broadband InternetAccess

Quantity, penetration rate, access speed and QoS

 Brought up IP Phone local market in order to leverage thealready booming VoIP manufacturing industryService Provider and Maker collaboratively improve competitivenessand added value to the manufacturing industry.
15

IPOX Strategies
 ISP，TANet，GSN multi-peer IP Phone Interchange
cooperation
 Targeted at IP Intra-net, avoid IP-PSTN issues
 Promote Personal/Enterprise VoIP simultaneousPersonal VoIPz Mimic Japan modelEnterprise VoIPz Adaptive approachz Integrate existing VPN closed VoIP install base

 SIP/Enum standard
SIP/Enum standard will be adopted as much as possible
 H.323/SIP inter-working mechanism needed for integrating H.323
install base16Dual Network Approach for Enterprise
UserPhone

Carrier
SwitchPSTN

PBX

PBX

H.323
VoIP GW

PBX

H.323
VoIP GWPBXSIPVoIP GWSIPVoIP GW

H.323 Gatekeeper
support Enum

Existing VPN H.323 VoIP User

New SIP VoIP User

070 IP Phone Network

Call Server

SIP/H.323 InterchangeCenter17

ENUM ServerDifference btw IPOX and what happenedin Japan
Japan

IPOX

Market Trigger

Fired by Yahoo! BB, followed by Initiated by Government
other ISP
sponsored promotion project

Scope of 'Intra-net'call(IP free phone)Some ISP formed 'free phone'consortium

Market biasing

Personal market initiallyAdoption of SIP/EnumNot applying initiallystandard

18

Intend to invite almost all of local
ISP
Parallel develop Personal/
Enterprise Market
Adopt SIP/Enum as much aspossible

IPOX Tentative Progress Schedule
Jan-03Major Milestone

Jul-03Jan-04

Jul-04Signing Consortium，
some ISP launch IP

All member ISP
provide IP Phone

Demonstrative Site

Promotion

SIP/EnumTrial
Network
Testing/Certification
Environment
GSN /TANet
Numbering
Plan/Reulation
Change Proposal

Finalize IP Phone 'Prefix'， Complete
Propose regulation change regulation change

19Jan-05

300,000
Subscriber

Promotion
Start IP/PSTN
Interworking

Jul-051,000,000
subscriber

Promotion

IPOX Phase I
 Forming a multi-ISP consortium jointly promote
SIP/Enum IP Phone services
 including new type 1 operator,TANet (Educational Internet),GSN(Government Services Network) R&D institute and VoIP manufactures operation of IPOX consortium may will be very similar to VoIP
Development Council in Japan.

 Three WG will be formed under IPOX consortium Common Numbering and SIP/H.323 Interworking, Interop/QoS/ Testing and Regulation.

 Several promotional activities, including VoIP Topicbooth in related exhibitions, technologicalproliferation, seminar, etc.
20

The 「070」Ad hoc IP Phone Prefix The 「070」prefix have been proposed by theconsortium The prefix will be applied by member ISP to deploy IP PhoneServices

 SIP/Enum standard should be adapted for IP
Phone Services interoperation(“the core”), H.323
subsystem should be gateway to SIP/Enum interoperation network.
 The 「070」prefix will be applied for IP Phone『intra call』only, interconnection of 「070」 with
PSTN will be adapted only after related regulation
have been modified 21

IPOX Phase II QoS Criteria and Evaluation Environment
 Conformance and Interop Testing SIP Video Phone Services
 Wi-Fi SIP Phone Services
 Enum Value Added Services/Services Capability
 Promotional/Interop Demonstration

22

Q & A23