1. Status on ENUM@CNNIC Xiaodong(Sheldon) Lee, CNNIC 2004-03-03, Seoul, IETF59

2. Contents Background Integrated ENUM trial platform ENUM performance test Participation on the ENUM activities China MII-ENUM Study Group Next steps

3. Background Up to the end of 2003, about 80 million Internet users, more than 260 million mobile phone users and more than 255 million non-mobile phone users in china, VoIP is not very popular but very important for Chinese users CNNIC is co-operated by Ministry of Information Industry of China, and Chinese Academy of Sciences

4. Background Cont ’ d Jul. 2001, CNNIC start the ENUM project and setup a simple ENUM trial system 3 months later Feb. 2002, MII(Ministry of Information Industry, China) made decision on ENUM trial plan Sep. 2002, 6.8.E164.arpa delegation by RIPE-NCC and ITU-TSB

5. Background Cont ’ d Oct. 2002, CNNIC run one of the slave servers of e164.arpa July, 2003, CNNIC upgrade the ENUM trial system on both registration and resolution, and provide the free SIP registration for testing purpose for common users, opened for public test in Dec. 2003 Sep. 2003, CNNIC ENUM performance test

6. Integrated ENUM Trial Platform ENUM resolution platform Tier 0---current e164.arpa Tier 1---6.8.E164.arpa arpa-ns0.enum.net.cn;arpa-ns1.enum.net.cn Tier 2 Now, the telephone numbers are managed by province or carrier code, you might judge which province or carrier the numbers belong to. Registration plan is studied but not finished, of course it should cooperate with carriers, telephone number management should be independent with NAPTR records management to prompt NP Resolution Logs 6923 queries, Dec. 2003 4288 queries, Jan. 2004 7741 queries, Feb. 2004

7. Integrated ENUM Trial Platform Cont ’ d ENUM registration platform WWW.ENUM.CN Announced to public users in the 2 nd whole meeting of Internet Society of China, in Dec. 2003 Trial registration under 6.8.e164.arpa. Over 260 users and 520 ENUMs are registered Many people or companies show great interest 9584 page views in Feb.2004

8. Integrated ENUM Trial Platform Cont ’ d VoIP experience platform SIP UAs IP/GSTN gateway ENUM enabled SIP proxy Open for public registration only for testing purpose, along with the ENUM registration website, only ENUM users can register sip account Up to Feb. 2004, 205 sip accounts are registered 9029 calls among sip users(IP2IP) or through gateway(IP2Phone or Phone2IP)

9. ENUM Performance Test Internet-based ENUM resolution, to compare the resolution performance with PSTN Two items are mainly considered ENUM reply time & reply percentage, e.g. Remote query with cache, 18719 queries (18610 reply, 99%), average 407 millisecond Remote query without cache, 18713 queries (17360 reply, 94%), average 2266 millisecond ENUM server pressure How to support tremendous queries Dynamic update with tremendous queries

10. Participation on the ENUM Activities ITU-T Since 2002/02 IETF ENUM WG Input to the rfc2916bis Organized or join in several workshop in Asia Pacific CDNC activities

11. China MII-ENUM Study Group CNNIC is the key member of MII-ENUM SG, which is under lead by MII, China Carriers, Institutes, ISPs, and etc. are involved

12. Next Steps Continue the trial system and get feedback Research on the resolution performance and administrative policy(Tier2), suitable for china Promotion on ENUM/SIP application is a big challenge No license for Internet phone to end users is issued in china, but many ISPs, carriers, and software vendors show great interest Make suggestions to government to open business trial system(Number plan for SIP with ENUM resolution), and consider to deploy some open test with other carriers or ISPs

13. Thanks lee@cnnic.cn