Japan Registry Service

ENUM Activities in Japan
ENUM/SIP BoF in APRICOTFebruary 25, 2004
Hiro HOTTA <hotta@jprs.co.jp>

Copyright © 2004 JPRSJapan Registry Service

ENUM Study Group• Establishedhttp://www.nic.ad.jp/en/enum/index.html– September 2002

• Objectives– Understanding the ENUM technology : desk work
– Studying the implementation and operation of theENUM–based system, and related matters– Finding political/regulatory issues related to ENUMbased 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
Copyright © 2004 JPRS2

Japan Registry Service

ENUM Trial Japan (ETJP)• Established– on 17 September 2003 (1 year activity)

http://etjp.jp/english/index.html• Purpose– Perform ENUM trials to ensure functioning and feasibility of basic
technical facility– Demonstration of technology for international use– Accumulation and sharing of 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
Copyright © 2004 JPRS

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Japan Registry Service

ETJP organization• Participants– Companies, organizations, and individuals who hope tocontribute to ETJP activities– Number of members: 43 (as of February 20, 2004)• 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 © 2004 JPRS

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Japan Registry ServiceETJP phases and schedule
Elements
Elements inin thethe communication
communication services
services onon ENUM
ENUM

subscription
application

initialregistration
provideruserENUM
DNSresolution
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

phsae1
Sept.’03-Nov.03
phase2
Dec.’03-Mar.04
phase3
Apr.’04-Sept.04
Copyright © 2004 JPRS5

Japan Registry Service

ETJP Working Groups• Privacy and Security WG– Objective• Discuss data treatment policy in each phase of trial and then publish guidelines– Milestone• Jan 2004: First draft, request for comments• Feb 2004: Second draft• Mar 2004: Publish guideline• DNS WG
– Objective• Definition of possible ENUM DNS models in Japan, their requirements andevaluation criteria, then evaluate current DNS implementations– Milestone• Feb 2004: Definition of possible ENUM DNS models, requirements, evaluation
criteria• Mar 2004: Build Testbed, evaluation• Apr 2004: publish reports of the evaluation
Copyright © 2004 JPRS6

Japan Registry Service

DNS structure design• Depends on what model to select– User ENUM / Operator ENUM
– Requirements (such as Number-Portability?)• Typical requirements for Tier1 DNS:
– Handling of large zone
• even over 100M entries (if all the numbers are held in Tier1)– Scalability and stability– Performance• Typical requirements for Tier2 DNS:
– Capability for frequent update– EDNS0 support ?
• To hold a number of NAPTR RRs for a single E.164 numberthat may exceed 512 octets in one DNS packetCopyright © 2004 JPRS

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Japan Registry ServiceConsideration on DNS• Typical ENUM services like Web, Mail, SIP
also lookup DNS.
– Web: Hyper-links(A).
– Mail: sending (MX, A), receiving (PTR).
– SIP: service protocol (D2U/D2T NAPTR), servicelocation(SRV), sip server(A)• The number of DNS queries will increase when
ENUM is deployed.
• Users are nervous about service quality.
– Users don’t care where the bottle neck is.
Copyright © 2004 JPRS

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ENUM trial (phase1)
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Copyright © 2004 JPRS

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Copyright © 2004 JPRS

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11Japan Registry Service

Layer of ENUM services and standards
Communication service (multiple carriers)
Authentication, Social Security
Communication service (single carrier)
Provisioning, Communication Security
Applications/Terminals
SIP, Mail, Web, etc.
Infrastructure
ENUM DNS
Copyright © 2004 JPRS

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Japan Registry Service

ETJP Registration system (Phase 1)• Each ETJP member can apply their preferrednumbers as their trial E.164 numbers– The rules of the numbers to be registered in phase2
and 3 are under negotiation with the government• Verification is performed by each member’s ID
and password

Copyright © 2004 JPRS

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Japan Registry Service

NAPTR Registration Web I/F (Phase 1)•••

Copyright © 2004 JPRSETJP members can set theirpreferred NAPTR RRs to thetrial DNS through this Web
I/F.
Those NAPTR RRs areupdated within a few minutes.
Can be examined via ENUM
client-like Web I/F.

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Japan Registry Service

ETJP applications (Phase 1)••••

ENUM enabled SIP Proxy (Softfront)
ENUM enabled VoIP Router (Yamaha, CISCO)ENUM enabled InternetFAX (Panasonic)
Sample Software ENUM Client (JPRS)– Available for the members– Object codes of runtime libraries used by the sample softwareare open to the members– API (under development)• SetDNS : specifies the DNS server• SetAUS : specifies the Telephone Number• CreateAUS : create the AUS Number using the locale info
• ENUMQuery : look-up NAPTR records• ENUMGetData : picks up NAPTR records one by one• ….

Copyright © 2004 JPRS

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Japan Registry Service

More application and SDK
1) start

2) input telephone number and look-up

Copyright © 2004 JPRS

3) services are shown and select one4) Start the communication service

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Japan Registry ServiceReferences• ETJP– http://etjp.jp/ (in Japanese)– http://etjp.jp/english/• ENUM Study Group– http://www.nic.ad.jp/en/enum/• JPRS– http://jprs.co.jp/enum/

Copyright © 2004 JPRS

(in Japanese)

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