【正文】 boratories無線寬頻整合多媒體通訊技術(shù)ENUM DNS Hierarchy 。 。 NAPTR RRs (ldap URL) LDAP DB...Tier 1Tier 2(Designated bythe end user) 。 Tier 3(Depending onthe application) Tier 0(RIPE)... 。 ldap URLSource: James Yum, Neustar.arpa .54工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)ENUM ScenarioIP NetworkSoftswitchSIP ProxyIADENUMServerEMail Server15Dial:0359156162SIPPhone33091096152741. User Dial Tel. No2. ENUM Query, get 3 URIs3. Make SIP Call, No Answer4. Make Mobile Call, Fail5. Connect to EMailDNS$ORIGIN . IN NAPTR 100 10 “u” “sip+E2U” “!^.*$!sip:!” IN NAPTR 102 10 “u” “tel+E2U” “!^.*$!tel:+886910961527!” IN NAPTR 102 10 “u” “mailto+E2U” “!^.*$!mailto:!”Media GatewaySignal GatewayEnum Record55工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)ENUM Scenario (cont.)1. User Make Call to Number: 0359156162. Softswitch Translates the Number to Query Input to ENUM Server: and gets a list of URIs returned? The Softswitch Processes the 1st URI Record,a. Query DNS to get the IP Address of Host: b. Make SIP Call to SIP Phone of slchou through SIP Proxyc. SIP Phone Does not Answer1. The Softswitch Processes the 2nd URI Record,a. Make PSTN Call Through Gateway to 0910961527b. 0910961527 Does not Answer2. The Softswitch Processes the 3rd URI Record,a. Query DNS to get the IP Address of Host: b. Connect the Caller EMail Server SMTP Protocolc. Caller Leave the EMail Message56工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)ENUM Administration IssueTier1RegistryTier2RegistryROOTRegistrarRegistrantAuthentication and Validation EntityASP Tier2RegistryTier0 NumberAssignmentEntity57工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)Registry vs. RegistrarvRegistry 216。Runs the DNS server for a specific domain name216。one domain one registryvRegistrar216。Provide ENUM Registration to ENUM Users216。So that Users Need Not to Contact Registry216。Registrar verify customer data, do billing, and send data to registry when delegation is to be done, changed or cancelled58工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)ITUT ENUM Activities59工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)IETF ENUM ActivitiesvTelephone Number Mapping (ENUM) WG216。RFC 2916, “ number and DNS”167。 RFC 2915, “The naming authority pointer (NAPTR) DNS resource record”, August, 2023167。 RIPENCC 216。Related ENUM Activities after RFC 2916167。 Update RFC to reference the DDDS– RFC2916bis,”The to URI DDDS Application”167。 ENUM Administrative and Operational Procedures– Registration and Provisioning, Validation and Authentication– Operational Privacy, Security Issues and Procedure167。 IETF Liaison with ITUT SG2167。 New Issues Being Considered:– Extent Same URI in RFC 2916 for Different Service187。 ., 2 SIP URIs but one for voice and one is instant messaging60工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)IETF ENUM Activities (cont.)216。Related ENUM Activities after RFC 2916 (Cont.)167。 SIP vs. ENUM Services, ., distinction the location provided by SIP and ENUM167。 Adding Presence as an ENUM service167。 Extension of ENUM service ‘tel’ URI167。 Location Number Portability, using DNS as the source167。 Extensible Provisioning Protocol (EPP) in PROVREG WG, IETF61工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)More Than Number TranslationvOne Number to Multiple URIs216。Multiple NAPTR ? service: URIvMultiple IP Services Behind one ENUM216。sip, tel, ifax, mms, ems, sip, , …vService Realization Mechanism in IP World216。Service Realization for ASP216。Service SelectionvService Management for ENUM Users216。Webbased Service Management for ENUM Users216。Service Applied Dynamically62工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)ENUMenabled OpportunitiesvASP / ISP / WISP216。Network service providers independent216。ADSL + WLAN as the access work216。VoIP to acquire user base167。 Two key enablers: VoIP phone numbers, IP telephony voice quality criteria (Class A, Class B, Class C)216。ENUMenabled IP services to generate revenuevCellular operators216。To create timetomarket costeffective niche applications with IP/ENUMenabled application servers (. movie stars chatting rooms, MMS)vFixed work operators who lacks first miles216。ADSL/Cable + VoIP as the access work63工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratories無線寬頻整合多媒體通訊技術(shù)DOC/NTIA Backs ENUMvNTIA(National Telemunications Information Administration), US Department of Commercev“…Because of the potential benefits of ENUM, …(NTIA) believes that the United States should seize this opportunity and take steps to participate in , …”216。Letter from Assistant Secretary of Commerce Nancy J. Victory to Ambassador David A. Cross, US Coordinator for International Communications and Information Policy, US Department of State, Feb. 12, 2023vENUMEnabled EMail is the 1st Service to be Promoted by DOC via ENUM mechanism64工業(yè)技術(shù)研究院電腦與通訊工業(yè)研究所Industrial Technology Research InstituteComputer Communications Research Laboratori