1. SIP-ENUM- --- S.,L. Chou 1 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VOIP 技術標準與發展趨勢 周勝鄰 博士 工研院電通所 E-mail: slchou@itri.org.tw Tel: 03-5915616 2003. 10slchou@itri.org.tw

2. SIP-ENUM- --- S.,L. Chou 2 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Contents  Overview of VoIP System  VoIP Technologies --- From H.323 to SIP  SIP-based IP Multimedia Communication System  ENUM for IP-PSTN Convergence  Conclusion

3. SIP-ENUM- --- S.,L. Chou 3 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP 的過去  Born of VoIP Industry VoIP Phone --- VocalTech 1995  H.323 Standard for VoIP Industry H.323 Proposed by ITU-T for Multimedia Communication over LAN in 1996 Adopted Quickly and Widely by Industries  VoIP Gateway, Gatekeeper, Enterprise GW, IAD Mainly Used in Enterprise, Toll-by-Pass Applications  Market Slow Down Infrastructure Bottleneck --- Limitation of H.323 New Technologies Developed Users Hesitate to Buy H.323 Products Vendors Invest Much in H.323

4. SIP-ENUM- --- S.,L. Chou 4 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP 的現在  New Technologies Ready MGCP, MEGACO/H.248, SCTP/M3UA, SIP/SDP IETF-like Protocols  New Products Developed Most Upgraded from H.323 Products  Support New Technologies as well as H.323 VoIP Infrastructure  Softswitch, Trunk GW, SS7 Signaling GW (SS7 over IP) Market Re-Booming  IETF Technologies Dominate SIP Telephony Being Widely Accepted ENUM for IP/PSTN Convergence Being Developed  Softswitch vs. SIP Softswitch: Mainly for Class 4/5 Switch Replacement SIP: Provide Telephony from IP’s Point of View

5. SIP-ENUM- --- S.,L. Chou 5 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP 的未來  VoIP Infrastructure will Get Ready (How Soon ?) ENUM for IP/PSTN Convergence Product and Service Start to Boom  It’s Technologies Trend, Not Just for Cost Saving Driving Force of NGN Mandatory in Future All-IP Network  SIP Technologies Will Dominate SIP Telephony/CO Signaling/Multimedia Service/3G Key Technologies for IP/PSTN Convergence

6. SIP-ENUM- --- S.,L. Chou 6 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP Applications Enterprise VoIP Gateway VoIP Phone Residential GW Trunk GW IP PBX Softswitch Application Server Media Server ENUM 3G Softswitch VoIP Mobile Toll By Pass ITSP Basic Service Widely Deployment New Services IP/PSTN Convergence All-IP Networking 97 990205

7. SIP-ENUM- --- S.,L. Chou 7 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP Services Applications  PSTN’s (Telecomm.’s) Point of View Equip PSTN with VoIP Services Original Voice Users  For Cost Saving, No Service Enhancement Class 4/5 Switch Replacement with Softswitch  ISP’s (IP’s) Point of View Enhance Data Network with VoIP Capability Additional Voice Service to Original Data Users  Even Voice/Data Integrated Services SIP Telephony + Application/Media Servers Incentive  Low Incentive  High

8. SIP-ENUM- --- S.,L. Chou 8 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 VoIP Technologies --- From H.323 to SIP

9. SIP-ENUM- --- S.,L. Chou 9 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 H.323 for VoIP  Has Been Adopted by Vendors for Years  Almost Current VoIP Products Support H.323  Gateway  Gatekeeper  Terminal  MCU Packet Based Network N-ISDN B-ISDN H.320 Terminal H.321 Terminal H.321 Terminal H.310 terminal operating in H.321 mode GSTN H.324 Terminal H.322 Terminal Guaranteed QoS LAN Speech Terminal Speech Terminal V.70 Terminal H.323 MCU H.323 Terminal H.323 Terminal H.323 Terminal H.323 Gatekeeper H.323 Gateway Packet Based Network

10. SIP-ENUM- --- S.,L. Chou 10 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Challenges of H.323  H.323 Was Originally Proposed for LAN Environment Limitation Being Applied for VoIP Infrastructure Applications  Architecture is Too Simple Single Gateway to Interact with PSTN/GSM Suitable for Peer to Peer Communication  Protocol is Too Complex Complicated Call Set-Up Signaling Hard to Extend  Signaling Is Not Enough Only DTMF is Specified No SS7 Signaling Capability Advanced Services are Limited  Interoperability is Still an Issue

11. SIP-ENUM- --- S.,L. Chou 11 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Gateway Decomposition SS7 Signaling Traffic Media GW (MG) Media GW Controller (MGC) Signaling GW (SG) H.323 GW MGC: Call Control, Call Routing, Service Selection,… SG Interface with SS7 and Translate to SS7 over IP MG Dedicate for Media Translation and Transportation MGCP

12. SIP-ENUM- --- S.,L. Chou 12 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Media Gateway Control SGCP Telcordia May ‘98 MDCP AT&T Dec ‘98 Aug ‘00 MEGACO/H.248 IETF/ITU-T Level3,... Aug ‘98 IPDC 0.12 IPDC 1.0 Sept ‘98 MGCP 1.0 IPDC: IP Device Control Protocol SGCP: Simple Gateway Control Protocol MGCP: Media Gateway Control Protocol MDCP: Media Device Control Protocol MEGACO: Media GAteway Control (IETF Working Group)

13. SIP-ENUM- --- S.,L. Chou 13 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 MGCP/MEGACO/H.248  Client-Server Architecture  Call Agent (Media Gateway Controller) Call Control Server  Media Gateway Dedicated for Media Transmission Trunk/Access/Residential GWs  Signal Gateway SS7 Interfacing RTP Streams SS7 (ISUP) SGW SS7 (ISUP) TrunkGW TrunkGW CO IP phone Access GW/ IP-PBX/RGW IP phone MGCP MGC (CA) MGC (CA) MGCP/ MEGACO MGCP/ MEGACO

14. SIP-ENUM- --- S.,L. Chou 14 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ISUP/MGCP/SIP Interworking SG MGC SG

15. SIP-ENUM- --- S.,L. Chou 15 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SS7 over IP ISUP TCAP SCCP MAP MTP OSI Layers Application Presentation Session Transport Network Data Link Physical INAP SS7 Protocol Stack ISUP TCAP SCCP MAP SCN S ignaling A daptation (M3UA, IUA, …) C ommon S ignaling T ransport (SCTP) IP INAP SIGTRAN Protocol Stack

16. SIP-ENUM- --- S.,L. Chou 16 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Softswitch System Architecture Media Gateway SOFTSWITCH Media Server IP RTP MGCP SIP T1/PRI Media Gateway PSTN SS7 Signaling Gateway SS7 Signaling Gateway Application Server Service APIs Enhanced Services SCTP

17. SIP-ENUM- --- S.,L. Chou 17 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 What is A Softswitch ? Software, hardware and applications solutions typically come packaged in a single (proprietary) box. Non-standard solutions are expensive to implement and leave little room for innovation. Circuit-Switched Transport Hardware Call Control & Switching Services & Applications PROPRIETARYPROPRIETARY Solutions are open standards-based products, and can come from multiple vendors. Customers are free to choose best-in-class products to build their network. Open standards enable innovation and in the long run can reduce costs Soft-Switched Transport Hardware Softswitch Call Control Services, Applications & Features (Management, Provisioning and Back Office) Open Protocols APIs

18. SIP-ENUM- --- S.,L. Chou 18 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Internet Telecom System IN/SCP RTP Streams IP Network MGC SS7 VoIP Signaling Gateway PSTN SS7 Trunk Gateway VoIP SG Trunk Gateway SIP -T MGCP/ MEGACO SCTP Gatekeeper/Billing/Internet Messaging Authentication/Directory/... SIP+ (?) CoreBui lder 9000 Application Server SIP ITG/IP-PBX

19. SIP-ENUM- --- S.,L. Chou 19 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Wireless System --- From GSM to GPRS GPRS External Data Network PSTN HLR SGSNGGSN Gb Gn Gi GSM PCU BSS Gateway MSC/VLR Visited MSC/VLR Always-On Wireless Packet Data Services

20. SIP-ENUM- --- S.,L. Chou 20 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 IP Multimedia in 3G All-IP System

21. SIP-ENUM- --- S.,L. Chou 21 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP in 3G All-IP System SGSN GGSN GPRS Backbone IP Network Alternative Access Network CSCF MGCF MGF VoIP Network PSTN/GSM Gm HSS Multimedia Sub-Core Network (VoIP) Applications & Services (OSA Platform) Gm: Interface between UE and CSCF - Over GPRS Data Bearer Service - Based on SIP (RFC 2543) Protocol - For Application Level Signaling * Register to CSCF * Call Orgination/Termination * Supplementary Services

22. SIP-ENUM- --- S.,L. Chou 22 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP-based IP Multimedia Communication System

23. SIP-ENUM- --- S.,L. Chou 23 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP Telephony System User Agent Client(Caller) User Agent Server(Callee) Proxy Server Redirect Server Location Server SIP Request SIP Response RTP Media Stream

24. SIP-ENUM- --- S.,L. Chou 24 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Session Initiation Protocol  Session Initiation Protocol SIP is HTTP-like, Text-based Client-server Protocol (client-to-client is possible) To Establish, Modify and Terminate Multimedia Sessions or Calls Be able to Integrate Voice, Video and other Interactive Communication Services with Instant Messaging and Presence  Original RFC 2543 --- Feb, 1999  Newest RFCs --- July, 2002 RFC 3261 SIP: Session Initiation Protocol RFC 3262 Reliability of Provisional Response in Session Initiation Protocol (SIP) RFC 3263 Session Initiation Protocol (SIP): Location SIP Servers RFC 3264 An Offer/Answer Model with Session Description Protocol (SDP) RFC 3265 Session Initiation Protocol (SIP)-Specific Event Notification

25. SIP-ENUM- --- S.,L. Chou 25 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP Attributes  User Agents End Systems Acting on Behalf of a User  Clients(UAC) to initiate a SIP request and servers(UAS) to receive the request and return responses  Servers Proxy Server Relay Call Signaling Redirect Server Registrar Server: User Locations Tracking (Like HLR in GSM)  Naming & Addressing SIP URL, e-mail like: user@hostuser@host Examples Sip:patrik@example.com Sip:Jackie@176.7.6.1

26. SIP-ENUM- --- S.,L. Chou 26 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP Operation in Proxy Mode

27. SIP-ENUM- --- S.,L. Chou 27 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP Operation in Redirect Mode

28. SIP-ENUM- --- S.,L. Chou 28 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Protocol Format INVITE sip:pgn@example.se SIP/2.0 Via: SIP/2.0/UDP science.fiction.com From: Fingal To: Patric Call-ID: 1234567890@science.fiction.com Cseq: 1 INVITE Subject: lunch at La Empenada? Content-Type: applcation/sdp Content-Length: … v=0 o=ffl 53655765 2353687637 IN IP4 123.4.5.6 s=Chorizo c=IN IP4 science.fiction.com m=audio 5004 RTP/AVP 0 3 5 a=rtpmap:0 PCMU/8000 SIP Header Payload: MIME type (SDP)

29. SIP-ENUM- --- S.,L. Chou 29 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP in IP Multimedia Architecture Applications SDP/SDPng HTTPSMTPSAPSIPRTSP TCP/SCTPTCP/UDPUDP RTP/ RTCP RSVPRSVP IPv4/IPv6 with Mobility, DiffServ and Multicast Common Addressing, user@domainuser@domain (URI & URL) Text-based and Encoding Format Same Request-Response Model, and Response Codes MIME for Flexible Payload DNS for Address Mapping Easy to Do Integrated Services by Combining more than One Protocols

30. SIP-ENUM- --- S.,L. Chou 30 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP-Based Services  Internet Telephony Well-Recognized IP Telephony System  Instant Messaging Exchange of Content between Participants in Real-time  Presence Subscription to and notification of changes in the comm. State of a users Currently worked by SIMPLE WG in IETF  Click-to-Call from an Electronic Document ‘SIP as tag’ Contained in Document  Transport of MIME in SIP Signaling Reference to Web/WAP Pages, mail, pictures  Interactive Games with SIP Signaling

31. SIP-ENUM- --- S.,L. Chou 31 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Rich Call with SIP  Before the Call Dynamic Phone Book Click-to-Talk  During Call Establishment Sending a Rich Clip, which Can be  A Picture with Call Subject, or  Special Ringing Tone  During the Call Document Sharing Information Push  During Session Tear-Down (same as Call Establishment)  After the Call Be Able to Send Instant Message

32. SIP-ENUM- --- S.,L. Chou 32 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP for Instant Messaging  Integration of Messaging, Presence, and Session-oriented Communication  RFC 3428 --- SIP Extension for Instant Messaging SIP MESSAGE Method --- Pager-mode IM  For small IM Exchange  Carry IM on Signaling Channel --- Big Overhead  Pager-mode vs. Session mode Instant Messaging Pager-mode --- Each message is independent of any other message Session-mode --- IMs are associated with a media session established by SIP INVITE method  Message Session Relay Protocol (MSRP) --- IETF Draft Support Session-mode IM between Endpoints

33. SIP-ENUM- --- S.,L. Chou 33 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 SIP for IP Convergence  In 3G and NGN, the Focus Shift towards to All-IP Paradigm IP Transport, IP Mobility and VoIP (e.g. SIP) Protocol  SIP Has Been Adopted by 3GPP for Session Signaling  SIP Telephony System Has Been Well Accepted  With SIP, Service Creation is Fast and Easy IP Protocols vs. Telecom Protocol, like IN Be able to Integrate Most IP-based Services  Service Mobility and Personal Reachability By SIP and IPv6 Mobility

34. SIP-ENUM- --- S.,L. Chou 34 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM for IP-PSTN Convergence

35. SIP-ENUM- --- S.,L. Chou 35 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM 101  What is ENUM (RFC 2916)? Make Telephone Number Become a Domain Name in Internet  Importance of ENUM Mechanism for IP/PSTN Convergence  Global ENUM Activities IETF, ITU-T, US ENUM Form, Europe, … ENUM Trials: More Than 10 Countries  Different Kinds of ENUM Public ENUM: Future Vision Carrier ENUM: Enhance MMS/SMS Services Enterprise ENUM: Enhance Enterprise Telecomm Service

36. SIP-ENUM- --- S.,L. Chou 36 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 What is ENUM ? ENUM Mechanism E.164 Number Domain Name System (DNS) URI(Service@Host) ENUM is a Mechanism to Translate an E.164 Number into A List of URI (Service@Host)Service@Host So that An IP User Can be Accessed by E.164 Number. Problem: How to Address (or Locate) a User in IP Telephony World or PSTN/VoIP Integrated Network ?

37. SIP-ENUM- --- S.,L. Chou 37 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 What is ENUM ?

38. SIP-ENUM- --- S.,L. Chou 38 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 What is ENUM ?

39. SIP-ENUM- --- S.,L. Chou 39 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM Domain

40. SIP-ENUM- --- S.,L. Chou 40 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM DNS Hierarchy 2.6.8.8.e164.arpa -> ns1.t1a.com; ns2.t1a.com 6.6.8.8.e164.arpa -> ns1.t1b.com; ns2.t1b.com 4.3.2.1.4.9.3.2.2.6.8.8.e164.arpa -> NAPTR RRs (ldap URL) LDAP DB... Tier 1 Tier 2 (Designated by the end user) 4.3.2.1.4.9.3.2.2.6.8.8.e164.arpa -> ns1.t2.biz; ns2.t2.biz Tier 3 (Depending on the application) 6.8.8.e164.arpa -> ns1.t1.com ns2.t1.com Tier 0 (RIPE) ns1.t1.com/ns2.t1.com... 4.3.2.1.8.9.2.6.6.8.8.e164.arpa -> ns1.t2.org; ns2.t2.org ns1.t1b.com/ns2.t1b.com ns1.t1a.com/ns2.t1a.com ns1.t2.biz/ns2.t2.biz ldap URL Source: James Yum, Neustar.arpa.

41. SIP-ENUM- --- S.,L. Chou 41 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM Scenario IP Network Softswitch SIP Proxy IAD ENUM Server E-Mail Server 1 5 Dial:03-5915616 2 SIP Phone 3 3 0910961527 4 1.User Dial Tel. No 2.ENUM Query, get 3 URIs 3.Make SIP Call, No Answer 4.Make Mobile Call, Fail 5.Connect to E-Mail DNS $ORIGIN 6.1.6.5.1.9.5.3.6.8.8.e164.arpa. IN NAPTR 100 10 “u” “sip+E2U” “!^.*$!sip:slchou@itri-sip-proxy.org.tw!” IN NAPTR 102 10 “u” “tel+E2U” “!^.*$!tel:+886910961527!” IN NAPTR 102 10 “u” “mailto+E2U” “!^.*$!mailto:slchou@itri.org.tw!” $ORIGIN 6.1.6.5.1.9.5.3.6.8.8.e164.arpa. IN NAPTR 100 10 “u” “sip+E2U” “!^.*$!sip:slchou@itri-sip-proxy.org.tw!” IN NAPTR 102 10 “u” “tel+E2U” “!^.*$!tel:+886910961527!” IN NAPTR 102 10 “u” “mailto+E2U” “!^.*$!mailto:slchou@itri.org.tw!” Media Gateway Signal Gateway Enum Record

42. SIP-ENUM- --- S.,L. Chou 42 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ENUM Scenario (cont.) 1.User Make Call to E.164 Number: 03-5915616 2.Softswitch Translates the E.164 Number to Query Input to ENUM Server: 6.1.6.5.1.9.5.3.6.8.8.e164.arpa and gets a list of URIs returned The Softswitch Processes the 1 st URI Record, a.Query DNS to get the IP Address of Host: itri-sip-proxy.org.tw b.Make SIP Call to SIP Phone of slchou through SIP Proxy c.SIP Phone Does not Answer 1.The Softswitch Processes the 2 nd URI Record, a.Make PSTN Call Through Gateway to 0910961527 b.0910961527 Does not Answer 2.The Softswitch Processes the 3rd URI Record, a.Query DNS to get the IP Address of Host: itri.org.tw b.Connect the Caller E-Mail Server SMTP Protocol c.Caller Leave the E-Mail Message

43. SIP-ENUM- --- S.,L. Chou 43 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 ITU-T ENUM Activities  ITU-T Study Group 2  Interim Procedures for Use of the ARPA Domain Approved in May, 2002 Interim procedures for delegation of E.164 country codes into ARPA domain before Approval of E.A-NUM RIPE-NCC is Authorized by ITU-TSB to Perform such Delegation at this Stage  http://www.ripe.net/enum/instructions.html

44. SIP-ENUM- --- S.,L. Chou 44 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Tier-0 Top Level Domain (TLD)  The Choice of Common Designated Domain fir ENUM Tier-0 is Undecided and is Proving Controversial ARPA as ENUM TLD is Controlled by IETF and Operated by RIPE-NCC  US and some other countries, ISOC/IAB/IETF Support IETF Conclusion  European Union, France and Germany Proposed ITU-TSB as the Operator for ENUM  China, France, Germany, Syria and Spain Objected to ARPA as TLD for political reason  to reinforce the infrastructure of Internet governance E.A-ENUM Recommendation  “Principle and procedures for the administration of E.164 Country codes for registration into the Domain Name System”  TLD is open  ITU-TSB is the ENUM Tier-0 Administrator

45. SIP-ENUM- --- S.,L. Chou 45 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 IETF ENUM Activities  Telephone Number Mapping (ENUM) WG RFC 2916, “E.164 number and DNS”  RFC 2915, “The naming authority pointer (NAPTR) DNS resource record”, August, 2000  RIPE-NCC Related ENUM Activities after RFC 2916  Update RFC to reference the DDDS –RFC2916bis,”The E.164 to URI DDDS Application”  ENUM Administrative and Operational Prtocedures –Registration and Provisioning Procedures, Validation and Authentication of Data –Operational Privacy, Security Issues and Procedure  IETF Liaison with ITU-T SG2  New Issues Being Considered: –Extent Same URI in RFC 2916 for Different Service »e.g., 2 SIP URIs but one for voice and one is instant messaging  SIP vs. ENUM Services, e.g., distinction the location provided by SIP and ENUM  Adding Presence as an ENUM service  Extension of ENUM service ‘tel’ URI  Location Number Portability, using DNS as the source  Extensible Provisioning Protocol (EPP) in PROVREG WG, IETF

46. SIP-ENUM- --- S.,L. Chou 46 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 European Forums  ETSI “ENUM Administration in Europe”, May, 2002 3 Level architecture: ENUM Tier-0, Tier-1, and Tier-2 Refers to e164.arpa as TLD, but accommodate different selection by ITU-T in the future Permit the Deployment of ENUM in roots alternative to “.”  A threat to universal resolvability of DNS controlled by ICANN Important Principles for Each European National Implementation of ENUM:  ENUM end user must be the assignee of an E.164  Integrity of ENUM data shall not be compromised  Administration requirements for different number types and managements of E.164 Numbering Plan  Must be compliant to ITU-T Recommendation and IETF technical specification  Stable and secure ENUM Environment  Conformity with national data protection and privacy laws  Accord with national regulatory requirements  Don’t affect existing network functions, such as LNP  Opt-in ENUM service for end users

47. SIP-ENUM- --- S.,L. Chou 47 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 US ENUM Forum US ENUM Forum (General Session) Architecture and Infrastructure Provisioning Security and Privacy InterworkingApplications Legal Experts Group External Communications Group

48. SIP-ENUM- --- S.,L. Chou 48 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Current ENUM Trials CountryHostPartnersParticipantScopeTimetable U.S. NeuStar (the NANP Aministrator since 1997) Carriers, Service providers, Manufactures International, Trial country code: +991 001 Feb. 2002 ~ Dec. 2002 Telcordia/VerisignEnd usersNationalDec. 2000 ~ U.K. DTI UKEGNeuStarTier 1 Restry Tier 2 Registrar … InternationalInfrastructure: Jan. 2003 End of trial: Jun. 2003 Austria VISIONng Telekcom Austria Infonova, BearingP oint International, Trial country code: +878 10 Infrastructure: Oct. 2002 End users: Nov. 2002 End of trial: Apr. 2003 Commercial: Jun. 2003 Sweden PTS (Post & Telestyrelsen) Recommend national trial Evaluating until Jul. 2003 16 ENUM Request Approved: AC, AE, AT, BR, CN, DE, HU, IO, NL, PL, RO, SE, SH, UK, NeuStar, VISIONng/INFONOVA

49. SIP-ENUM- --- S.,L. Chou 49 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Taiwan ENUM Activities  ENUM Forum Taiwan Formed by TCA Coordination TWNIC, CCL, TL, III, Operators, …  SIP/ENUM Trial Project Coordinated by ENUM Forum Taiwan Sponsors: IDB, DGT, CCL, NTP & NBEN, TWNIC, Operators, NICI, IPv6 Task Force, ISP, … Duration: 2003.1 --- 2003.12  DGT’s Activities 法令研究 爭取 886 國碼之使用權 贊助 Trial Project

50. SIP-ENUM- --- S.,L. Chou 50 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Taiwan SIP/ENUM Trial Project

51. SIP-ENUM- --- S.,L. Chou 51 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Purposes  To Build NGN Telecomm. Solution Using Domestic Components and Have it Be Deployed CCL SIP Proxy Server, IP-PBX, SS7 over IP GW, … Domestics CPE Products: SIP Phone, Access/Residential GW, Trunk GW, …  To Practice the ENUM Application and to Build Up the ENUM Mechanism in Taiwan Domestic ENUM Mechanism ENUM Operation in DNS System  Accumulate the Operations Experience for NGN Networking

52. SIP-ENUM- --- S.,L. Chou 52 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Trial Scope NBEN Softswitch Tier 2 NS IP Phones (0944-0xxxxx) PSTN Media Gateway Signal Gateway LEC Taipei Operator (0944-0xxxxx) PSTN Media Gateway Signal Gateway LEC HsinChu Operator (0944-0xxxxx) Tier 1 NS IPv6 ISP IP Phones (0944-0xxxxx) IPv6-IPv4 Gateway SIP Proxy ITRI SIP System IP PBX NTU/NCTU/NTHU TWNIC

53. SIP-ENUM- --- S.,L. Chou 53 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Trial Participant  CCL System Integration, Application Development, Operation Support Trial Project Coordination  Vendors Provide Equipments for Trial System Integration  NCTU/NTHU/NTU VoIP/ENUM Applications, Operation Support  Operators PSTN Network to Join Trial, POTS Phone User to Join Trial Operation and Customers Support  TWNIC ENUM/DNS Support and Operation

54. SIP-ENUM- --- S.,L. Chou 54 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Problems to Be Solved  SIP System and PSTN Interworking Interface, e.g., SS7 to SS7 over IP Billing …  VoIP Interoperability CPE/RGW/AGW/TGW/IP-PBX/Softswitch/… …  ENUM Operation in Existing DNS System ENUM Query Processing ENUM Service Provisioning …  Applications Integrity/Security/…

55. SIP-ENUM- --- S.,L. Chou 55 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Trial Scenario  Telephone is Used in All Cases to Address the Called Party  SIP to SIP Call SIP UA: PDA Phone, Softphone, Real SIP Phone Call from Anywhere of the IP Network including NBEN, ITRI (through IP-PBX), and ISP Telephone Number is Used and ENUM is Activated  SIP to POTS Phone Call From SIP Phone in IP Network to POTS Phone Located in Hsinchu or Taipei Long Distance Traffic Is Carried by NBEN  POTS Phone to SIP  Applications ENUM-enabled E-mail …

56. SIP-ENUM- --- S.,L. Chou 56 工業技術研究院 電腦與通訊工業研究所 Industrial Technology Research Institute Computer & Communications Research Laboratories 11/21/00 TANET 2003 Conclusions  H.323 Will Evolved to MEGACO and SIP  SIP-based IP Multimedia Service will Dominate  SIP is the Key for IP/PSTN Convergence  SIP-based Telephony is Booming  ENUM is An Important Enabling Technology to Speed-up IP/PSTN Convergence  ENUM --- Let Users Use Telephone Number in IP Network  ENUM --- Make Users to Manage Different IP Services Uniformly  ENUM Will Bring Huge Impact to PSTN and IP Networks