In Next-Generation Networks. The Role of TISPAN. Graham Finnie. A Light Reading Webinar. Thursday, March 9, Senior Analyst.

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1 A Light Reading Webinar The Role of TISPAN In Next-Generation Networks Thursday, March 9, 2006 Hosted by Graham Finnie Senior Analyst

2 Speakers Simon Spraggs Cisco Systems Jared Rosoff Tazz Networks

3 Agenda What is ETSI TISPAN NGN? The NGN evolution & requirements ETSI TISPAN architecture TISPAN use cases Conclusions

4 What Is ETSI TISPAN NGN? Background Telecommunications & Internet Converged Services & Protocols for Advanced Networks (TISPAN) TISPAN is a standards group within the European Telecommunication Standards Institute (ETSI) Specialized in fixed networks & Internet convergence 8 sub-groups defining all aspects of NGN Defining a standards-based NGN architecture Based on well defined sub-systems, functional blocks & defined interfaces Maximizing fixed & mobile convergence, through adoption of 3G IMS components

The Benefits of an NGN From Stovepipes to Converged Enhanced User Experience Universal user experience regardless of access medium Integration of presence & mobility Simplified Service Introduction

5 The Benefits of an NGN From Stovepipes to Converged Enhanced User Experience Universal user experience regardless of access medium Integration of presence & mobility Simplified Service Introduction Standardized interfaces Well defined capabilities per functional component Reduced Operating Costs Automated service delivery Unified network architecture Any Application, Any Network, Any Device Delivered with Quality, Control, and Accountability

6 What Is an IP NGN Architecture? Consumer Business Evolved services Service Layer Application Layer Customer Element Access/ Aggregation Transport Intelligent Edge Multiservice Core Network Layer Operational Layer Operational Layer Service Exchange Self Service Identity Policy Billing Mobility Framework for User and Application- Based Control (Data, Voice, Video, Mobility) INTELLIGENT INFORMATION NETWORK

7 NGN Application/Protocol Requirements Comprehensive Support for SIP and Non-SIP applications Video & Gaming SIP Applications Presence- VoIP / Push-to-talk (PTT) Presence- Based Telephony VoIP Data / Push-to-talk (PTT) Center Buddy lists Click to dial Location-based info services FMC (Dual-mode telephony) More Non- SIP Applications Web Mobile Services P2P Services Apps IP Contact Center IPTV / VoD / Videoconferencing Gaming VoIP /SMS/MMS More Service Layer Application Layer Customer Element Access/ Aggregation Transport Intelligent Edge Intelligent Networking Multiservice Core Network Layer Operational Layer Operational Layer Service Exchange Self Service SIP based Identity Policy Billing Mobility Non-SIP based Open Framework for Enabling for Enabling Triple Play on Triple Play on the Move the Move (Data, Voice, (Data, Voice, Video, Mobility) IPoDWDM Traffic Engineering PPP/FR/ATM/Ethernet CoS/QoS L2/L3 L2/L3 L3 VPN MPLS IPv4/IPv6 VPLS Multicast Security Routing Protocols Fast Rerouting Peering

8 Why Not Just Adopt 3GPP IMS for Everything? Service Plane Application Server Application Server Application Server SCIM Control Plane HSS S - CSCF MRF HLR I - CSCF BGCF/MGCF PDF SEG P - CSCF SGW IMS Functions IP Transport Plane PSTN/ PLMN MGW MGW Intranet/ Internet SGSN GGSN Radio Access Network As Specified By 3GPP Claims to be access agnostic R6 moving in that directions R7 more so Implicit assumptions Policy element part of the Proxy SIP server :- implicit assumption that only SIP applications need policy Wireless UE & authentication:- No account taken of 15 years of AAA deployment in wireline Wireless access network via GGSN :- No account of CMTS for cable, BRAS for xdsl Only SIP signaled application :- No account taken of the majority of Internet applications, bandwidth apps No account of the regulatory and resulting commercial models seen in wireline

9 ETSI TISPAN NGN Detail & Status Release Timeline Pragmatic approach & emphasis on solutions Release 1 :- Released in Dec 2005 Main standards direction Voice, xdsl, SIP-oriented solutions, edge QoS capabilities Release 2: timeframe Being defined now Release 3: timeframe Generalized mobility Architectural Highlights Support of SIP-oriented & Non SIP applications IMS for conversational SIP-oriented applications Other sub-systems for other application types Access agnostic Support for complex commercial models Roadmap to fixed mobile convergence based on IMS Re-use & collaboration with SDO (specifically 3GPP)

10 TISPAN NGN Architecture Overview Applications Based on 3GPP IMS Other Multimedia Components Data Base IP Connectivity Access Network And related functionality Streaming Services (RTSP based) Other Networks ICF IP Multimedia Component (Core IMS) (SIP based) PSTN / ISDN Emulation (SIP-I based) PSTN / ISDN Gq interface Legacy Terminals Legacy Terminals Resource and Admission Control Functionality RACS Network Attachment Functionality NASS GW Go interface GW TGW Legacy Terminals MBG Core transport Network IP Access Transport Network Customer Networks NGN Terminals HGW NGN Terminals 3GPP IP-CAN 3GPP Terminals IMS (IP Multimedia Subsystem): The NGN core subsystem for SIP based conversational services Source:-Global Standards Collaboration, GSC#10, 28 August 2 September 2005 [ETSI ES Telecommunications and Internet Converged Services and Protocols for Advanced Networking (TISPAN): NGN Functional Architecture R1]

11 ETSI TISPAN Network Model (Release 1) User Equipment TE: Terminal e2 Equipment CLF CNG: Customer Network Gateway NASS CNGCF e3 a2 a4 NACF a3 UAAF Access network e2 e5 Transport Function Function Core, access and home transport capabilities Deals with different owners of the network Interfaces:- RACS and NASS PDBF a1 e4 AF-1 Applications ARF: Access Relay Function e2 L2TF: Layer 2 Terminal Function RCEF: Resource Control Enforcement Function e4 A-RACF Re Rq SPDF RACS Applications Ia AF-2 Applications Sub-systems PSTN Emulation Core IMS Core BGF: Border Gateway Function Access and Interconnect Diameter H.248 <tbd> e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di C-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

12 ETSI TISPAN Network Model (Release 1) Applications Interfaces e2 e2 to: NASS CLF SPDF- Serving Policy Decision Function CNGCF NACF UAAF PDBF A-RACF- Access Resource and admission Control Function e3 e3 e3 e2 RACS Function Policy implementation Admission control CLF Application Function (via ) NASS (AAA and conf) a2 a2 a4 a4 a2 a4 Functional blocks a3 e5 e5 e5 a1 e2 e2 e2 e4 AF-1 Applications A-RACF Re Rq SPDF RACS Ia AF-2 Applications Sub-systems PSTN Emulation IMS Core Diameter H.248 <tbd> e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di C-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

13 ETSI TISPAN Network Model (Release 1) Applications NASS e3 e2 e2 e2 CNGCF NACF CNGCF NACF e3 e3 CLF CLF a2 a2 a4 a4 a2 a4 a3 UAAF UAAF e5 e5 e5 PDBF e2 PDBF a1 e2 e2 e4 AF-1 Applications A-RACF Re Rq AF-2 Applications Function Sub-systems Registration and initialisation of UE Network Level ID and PSTN authentication Emulation Interfaces to:- RACS, Service, Transport IMS Core Functional blocks AMF: Access Management Function NASS NACF: Network Access Configuration Function CLF: Connectivity Session Location and Repository Function CNCFG: RACS CPE Configuration Function Ia Diameter H.248 <tbd> UUAF: User Access Authorization Function SPDF PDBF: Profile Database Function e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di A-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

14 ETSI TISPAN Network Model (Release 1) Applications Service Layer model General architecture defines Core IMS subsystem PSTN/ISDN emulation subsystem (PES) Streaming Subsystem e2 NASS IMS and PES CLF Content broadcast subsystem R1 only looks at:- IMS subsystem PES e3 a2 a4 Subset CNGCF of 3GPP NACF IMS UAAF Service control functionality Non IMS PES PES over IMS a3 e5 PDBF a1 e2 e4 AF-1 Applications A-RACF Re Rq SPDF RACS Ia AF-2 Applications Service subsystems PSTN Emulation IMS Core I/S-CSCF Mw Mr P-CSCF MRFC Mi BGCF Mg P-CSCF Diameter H.248 <tbd> e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di C-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

15 ETSI TISPAN Network Model (Release 1) Applications Application Function Two types of application AF-1 applications Don t use Service Sub-systems Interfaces e2 directly CLF to RACS Defined but not really covered in R1 AF-2 applications a2 a4 NASS Use Service control sub-systems Interfaces to: Service CNGCF Subsystem NACF RACS (AF-1 apps) e3 a3 UAAF e5 PDBF a1 e2 e4 AF-1 Applications A-RACF Re Rq SPDF RACS Ia AF-2 Applications Sub-systems PSTN Emulation IMS Core Diameter H.248 <tbd> e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di C-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

16 ETSI TISPAN Network Model (Release 1) Applications AF-1 Applications AF-2 Applications Service subsystems NASS e2 CNGCF e3 CLF a2 a4 NACF a3 UAAF e5 PDBF a1 e2 e4 A-RACF Re Rq SPDF RACS Ia PSTN Emulation IMS Core I/S-CSCF Mw Mr P-CSCF MRFC Mi BGCF Mg P-CSCF Diameter H.248 <tbd> e1 TE CNG ARF e1 AMF RCEF Access Transport L2TF Di C-BGF Node Network IP-Edge User Equipment Access network TISPAN NGN Core I-BGF

TISPAN Scenario: Use Case:- IMS Call Setup 1. User dials phone number, initiates SIP signaling 11 1 2.

SPDF requests authorization for access network resources via Rq interface 7 2 4.

SPDF (optionally) requests BGF authorization via Ia interface 3 8 6. Remote party SDP received 7.

17 TISPAN Scenario: Use Case:- IMS Call Setup 1. User dials phone number, initiates SIP signaling P-CSCF requests authorization for call via interface 3. SPDF requests authorization for access network resources via Rq interface A-RACF (optionally) provisions policies using Re/Ra interfaces 5. SPDF (optionally) requests BGF authorization via Ia interface Remote party SDP received 7. P-CSCF requests re-authorization for call given remote SDP via interface 8. SDPF (optionally) re-authorizes access network resources via Rq interface A-RACF (optionally) changes policies using Re/Ras 10. SPDF (optionally) requests BGF reauthorization 11. Ringing signal delivered to user 6

18 TISPAN in a Wholesale Environment Use Case B2B Interface between ASP & ISP B2B Interface between ISP & NSP

19 Wireline Today Use Portals Middleware /VoD servers Applications consumer Business AF-1 Applications AF-2 Applications Identity database BPM location DB Sub-systems PSTN Emulation IMS Softswitch IMS Core TR-69 ACS BAC RADIUS/DHCP CNR/CAR Policy Databases SPDF Policy Director A-RACF Resource Rq Controller RACS Resource Rq Controller TE CNG ARF AMF RCEF ISG Access Node Transport Network DPIs SBCs Core V SBCs and MGWs

20 Will TISPAN NGN Succeed? R1 Is a Great Start Acknowledgement of different access technologies Acknowledgement of commercial models Acknowledgement of varied application types SIP-based FMC through common IMS subsystem TISPAN Future Challenges R1 is heavily voice / SIP orientated Support for network-based services Support for existing non-sip initiated services Support for new emerging applications (for example IP/TV) Gaining support from the content providers ( over the top services)

21 The Poll Question What will be the first service deployed on a TISPAN RACS / NASS subsystem? PSTN emulation service FMC multimedia SIP-based services IP/TV solution Peer to Peer solution User initiated bandwidth/qos services (Turbo button)

22 Conclusions & Outlook NGNs are an important tool in the future profitability of SPs Network Convergence Common service portfolio regardless access TISPAN delivers an NGN architecture TISPAN has taken a pragmatic and sensible approach to NGN environments But TISPAN R1 services are limited NGNs architectures are still evolving The future relevance of TISPAN in NGN depends on TISPAN R2 and beyond

23 Q & A Please go to the Light Reading Webinar page to access this show archive and to register for upcoming shows:

ETSI NGN Work: TISPAN Status

ITU-T International Telecommunication Union International Multimedia Telecommunications Consortium ETSI NGN Work: TISPAN Status Richard Brennan Vice-Chair ETSI TISPAN Joint ITU-T Workshop and IMTC Forum