Japan Registry Service

ENUM Trial in Japan
ENUM BoF in RIPE47
January 28, 2004
Hiro HOTTA <hotta@jprs.co.jp>

Copyright © 2004 JPRSJapan Registry ServiceBackground

Copyright © 2004 JPRSJapan Registry ServiceTrends in Communication Market in Japan
Drivers• Change of Regulation– Privatization of Public Telecom Corporation– Relaxation of Regulation• Evolution of Devices– Small, Wireless, High-functioned (e.g., mobile phones with cameras)• Popularization of Internet and IP Technology– From Circuit Exchange to Packet Data Exchange

History~Sept.1987

only NTT provided public telephone services

First half of 1990s

communication cost decreased rapidly by competition

Latter half of 1990s share of mobile phones grew rapidly

subscribers of mobile phones overtook PSTN in March 2000
2000~

broadband including IP telephony grew rapidly
individual IP phone service providers ==> a couple of groups

Copyright © 2004 JPRS

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Assignment of 050-xxxxxxxx to IP Phones
050-xxxxxxxx are being assigned to IP phones so that PSTN
users can make calls to IP phones.
* prefix 050 is an easily recognized code for IP Phone
IP Phone Numbering Structure

050-CDEF-GHJK
IP phone Assigned toservice provider
MPHPT
10 million 050 phone numbers
service providers
5 million 050 phone numbers
users
Copyright © 2004 JPRS

Assigned tosubscriber

cf.
PSTN subscribers 60 million
mobile subscribers 80 million
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ENUM activities in Japan- ENUM Study Group & ENUM Trial Japan -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
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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
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ETJP organization• Participants– Companies, organizations, and individuals who hope tocontribute to ETJP activities– Number of members: 42 (as of January 28, 2004)• Officers– Chairman• Shigeki GotoJapan Network Information Center (JPNIC)/Waseda University– Vice chairman• Hirofumi Hotta
Japan Registry Service Co., Ltd.(JPRS)• Yoshiki Ishida
WIDE ProjectCopyright © 2004 JPRS

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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
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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 packet
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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), service
location(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

11ENUM trial (phase1)
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Copyright © 2004 JPRS

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Copyright © 2004 JPRS

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Japan Registry ServiceLayer 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
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ETJP Registration system (Phase 1)• Each ETJP member can apply their preferrednumbers as their trial E.164 numbers.
• Verification is performed by each member’s ID
and password.

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

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

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ETJP applications (Phase 1)••••

ENUM enabled SIP Proxy (Softfront)
ENUM enabled VoIP Router (Yamaha, CISCO)ENUM enabled InternetFAX (Panasonic)
Sample Software ENUM Client (JPRS)– Source codes are open to 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

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More application and SDK
1) start

2) input telephone number and look-up

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

19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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Q&A

Copyright © 2004 JPRS