Japan Registry Services

ENUM/SIP Deployment Status- Japan Update APRICOT2005 Conference
Internet Telephony (APEET)
Feb 23, 2005 @ Kyoto
Hiro HOTTA <http://堀田博文.jp>
Japan Registry Services (JPRS)
Copyright © 2005 Japan registry Services, Co., Ltd.

Japan Registry Services

Who is JPRS
• Establishedhttp://jprs.co.jp/en– December 2000
– ccTLD registry for .JP– ccTLD registry function completely delegated to JPRS in April 2002

• Features– Private, for-profit company– Endorsed by Japanese Government as .JP registry– Contract with ICANN– Registry activities overseen by Japan Network Information Center(JPNIC) and Japanese Government– Satisfaction of public interests through public comment, AdvisoryCommittee, community consultation, …
* Japanese Government = Ministry of Public Management,
Home Affairs, Posts and Telecoms (MPHPT)
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Japan Registry Services

IP Telephone Deployment• Background– Rapid deployment of Broad Band environment• IP Telephone is one of service menu of ISPs

– Telephone charge saving• Numbering Plan
– Special number assignment• 050– Normal number assignment• 0AB~J– Depends on service quality guarantee• Recent Statistics (As of the end of Sept/2004)– Broad Band Subscribers: 17.6M– IP Telephone Subscribers: 7M– 050 Assignment: 18.0M• 28 ITSP• 3 major groups: Softbank, NTT Communications, KDDISource: http://www.soumu.go.jp/s-news/2005/050126_3.html
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Japan Registry Services

Issues• Interconnection between ITSPs– IP-IP direct connection is restricted within ITSPgroup– ITSP Group-ITSP Group connection is via PSTN

• Unresolved issues– SIP interoperability• Established “VoIP System Interoperability Task Force” onDec 2004– http://www.nic.ad.jp/en/topics/2004/20041201-01.html– provider-provider interconnection test is about to start– Telephone number resolution• Leaving it to incumbent phone network (PSTN)?
• Resolving it within IP network (ENUM)?

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Japan Registry Services

Resolution with ENUM
①Tel to 050-1000-XXXXITSP A050-1000-XXXX②Tel to 050-2000-XXXX③Tel to 050-3000-XXXX

Each ITSP’s SIP server refers
ENUM DNS if location server
can’t resolve number
ENUM DNS has mapping
between each ITSP’s numbers andSIP URISIPServer④Tel to 050-4000-XXXX
Location
ServerTier2
ENUM
DNS

ITSP B050-2000-XXXX
SIP
ServerLocation
ServerITSP D
050-4000-XXXX

SIP
ServerTier2
ENUM
DNS

Tier1
ENUM
DNS

Tier2
ENUM
DNS

ITSP C050-3000-XXXX

Tier2
ENUM
DNS

Location
ServerSIP
ServerLocation
ServerCopyright © 2005 Japan registry Services, Co., Ltd.

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Japan Registry Services

ENUM Study Group
http://www.nic.ad.jp/en/enum/index.html• Established– September 2002
– Initiatives by the private sector• Objectives– Understanding the ENUM technology : desk work
– Studying the implementation and operation of the ENUM–
based system, and related matters– Finding political/regulatory issues related to ENUM-based
implementation and operation– Finding technological issues related to ENUM
– Clarifying pros and cons in ENUM usage• Final report– Published in May 2003
http://www.nic.ad.jp/en/enum/ENUMReport.pdf
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Japan Registry Services

ENUM Trial Japan (ETJP)•••

Established - 17 September 2003
http://etjp.jp/english/index.html– Initiatives by the private sector
Purpose– Ensure functioning and feasibility of basic technical facility– Demonstrate technology for international use– Accumulate and share know-how about ENUM
– DNS operation for ENUM Trial– Feasibility test of communication applications (device, software)using ENUM
– Feasibility test of communication services
Results– Technical verification• Communication devices and software provided by participants• Communication services– Clarification and consideration of relevant issues

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Japan Registry Services

ETJP organization• Participants– Companies, organizations, and individuals who hope tocontribute to ETJP activities– Number of members: 45 (as of Jul 21, 2004)• Telecom operators• ISPs• Vendors• Domain name registries/registrars• Others

Copyright © 2005 Japan registry Services, Co., Ltd.

75156128

Japan Registry Services

ETJP organization• Officers– Chairman• Shigeki Goto
Japan Network Information
Center (JPNIC) /Waseda University– Vice chairman• Hirofumi Hotta
Japan Registry Service Co., Ltd.
(JPRS)• Yoshiki Ishida
WIDE Project

Copyright © 2005 Japan registry Services, Co., Ltd.

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Japan Registry Services

ETJP and related organizations
TTCTAOJapan Internet Forum
HATS
Ubiquitous Networking ForumTCA
TELESA
FMMC
IAjapan

MPHPT (and its Committees)

Participation
Participation
Input about regulation

Report/Consultation

ENUM Study Group
Members

Business community
and relatedorganizations

Report/Consultation

Report/Consultation

ENUM Trial Japan ‐ ETJP ‐Cooperation

Members
Trials in othercountries/economies

APEET

Cooperation/Coordination

Web publication
Debrief report
Publication of the result

Communication hardware venders
Communication software venders

Feedback for operation

Communication service providers
Trade associations

ENUM Registry

OthersOperational verification of devices andsoftware
Consideration of service structure
Clarification of issuesCopyright © 2005 Japan registry Services, Co., Ltd.

Provision of the environment
for the usage of ENUM

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ETJP phases and schedule (Initial Plan)
Elements
Elements inin thethe communication
communication services
services onon ENUM
ENUM

subscription
application

initialregistration
provideruserENUM
DNS

resolution
communication(obtaining method andtarget address ofcommunication)
selection/changechange of ENUM data
element1 ENUM infrastructureelement4 provisioning (registration of communication method)element2 ENUM application

element3 communication service on ENUM
PhasesPhases ofof thethe trial
trial

phase1
Sept.’03-Nov.03
phase2
Dec.’03-Mar.04
phase3
Apr.’04-Sept.04 Î extended by 1 year
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Japan Registry Services

ETJP Working Groups• Privacy and Security WG– Objective• Discuss data treatment policy in each phase of trial and then publish
guidelines– Results• Guideline for ETJP system• DNS WG
– Objective• Define possible ENUM DNS models in Japan, their requirements andevaluation criteria, then evaluate current DNS implementations• Study the application of DNSSEC to ENUM

– Results• Definition of model and requirements• ENUM DNS evaluation reports
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ENUM trial (phase1)
ENUMDNS* experiment on connectivity
among applications
2.

Iof niti
ph al ron eg
e# ist
Sera
re rv
tio
gis icen
tr ati on

ENUM
registrar

n
atio
rtsi
reg aily)eciv(dSer bulk
inthwiseon
spup
kReloo1.
odethmeServicregistradapter

ation

ation
registr
Initial ne#of phontioicaunmm
coInternetInternetTrial
secretariatation
3. communicEnd userTrial team member

Copyright © 2005 Japan registry Services, Co., Ltd.

NPSTSI Pile-ma ・・・
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Japan Registry ServicesENUMregistrarnatiortsireg ily)eciav
Ser ulk (din bENUM
DNS

authentication

Serviceodeth
mof

operatorTel#adapter

ation
registr
Initial #
phone

regis
trati
on

InternetInternet

ntio
ica
unmm
co

Trial
secretariat* experiment oncommunication services

thwi
seon
sp
Reup
2.
kloo
1.

Iof niti
ph al ron ege# istr

ationENUM trial (phase2)

Serviceregistration
applicationCopyright © 2005 Japan registry Services, Co., Ltd.

3. communication

End useroperator

NPSTSI Pile-ma ・・・
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Japan Registry Services

ENUM trial (phase3)
kbulniENUMtion y)aratsdigaDNSe retimesciv
lr
Se evera(soperator CENUM
registrarodethmation
registradaptorTel#ntio
icaunmmcoe
ServicInitial r
and authegistration of penticat
ion codehone#

Operator
officeInternetInternetthwiseonspReup
2.
kloo
1.

authentication•Experiment on connection
among communication services
with user ENUM

End useroperator A
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ation
3. communicoperator BEnd userNPST
SI P
ile-ma ・・・
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Japan Registry Services

Layer of ENUM services and standards
phase3
Communication service (multiple carriers)

w/ help of VoIP System
Interoperability Task Force

Authentication, Social Security

phase2
Communication service (single carrier)
Provisioning, Communication Security

phase1

Sample client

Applications/Terminals

applications

SIP, Mail, Web, etc.
Infrastructure

SDKDNS

ENUM DNS
Copyright © 2005 Japan registry Services, Co., Ltd.

16Japan Registry ServicesReferences• ETJP– http://etjp.jp/ (in Japanese)– http://etjp.jp/english/• ENUM Study Group– http://www.nic.ad.jp/en/enum/• VoIP System Interoperability Task Force– http://www.nic.ad.jp/en/voip-sip-tf/• JPRS– http://jprs.co.jp/enum/
Copyright © 2005 Japan registry Services, Co., Ltd.

(in Japanese)
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