Development of IPX: Myth or Reality?
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1 Development of IPX: Myth or Reality? Patrick MeLampy -CTO/Founder Acme Packet Acme Packet 1
2 Agenda IPX Acme Packet Perspective IPX and LTE/VoLTE Acme Packet Acme Packet Page 2
3 IPX A Vendor Perspective Beta footer test 3
4 The IPX Vision IPX IPX $ $ MNO IPX IPX MNO $ SLA SLA SLA Acme Packet CONFIDENTIAL - IPX Solution Overview Page 4
5 Unified service evolves -any device, any one, any time Text Voice Data Video Presence + IM 5
6 Service provider choices will increase Over the top Service provider AT&T Enterprise 6
7 Cloud services will dominate Most services are already in service provider clouds Mobile Residential IP Centrex SIP trunking Over-the-top IP PBX and UC servers will vanish from enterprise premise, except the largest, communications - critical enterprises will build their own cloud Right network plumbing will be critical - bandwidth & QoS, identify, privacy 7
8 Network transport choices increase Internet IPX (Federnet) Future (Federnet 2.0) E E E E AT&T NSP SP OTT SP AT&T SP IPX SP SP SP SP SP E E OTT 8
9 Mobile access will dominate 9
10 IP identity and privacy become critical 10
11 A future of increasing choices Unified service evolves any where, any one, any time Service provider choices will increase Cloud services will dominate Network transport choices will increase Mobile access will dominate IP identity and privacy become critical 11
12 More choices requires more mediation and control at borders 1. In IP, we trust no one 2. Addresses and identities will forever be heterogeneous 3. Competitive Service Offerings may involve other protocols besides SIP 4. Codecswill never converge to a couple -audio & video 5. Unlimited bandwidth, QoS& signaling resources will forever be a myth 6. Some sessions are more important/valuable 7. No one will be allowed to do anything they want 8. IP regulatory compliance requirements will increase 9. Service provider business models will never be homogenous 12
13 IPX A New Transport Choice IPX Network Architecture IPX network architecture is a private IP backbone network with service-aware elements (IPX Proxy) Not-accessible by the Internet IP backbone network is the current GRX IPX Proxies are key to support multilateral/hub connectivity in a scalable and efficient manner At the border between the service provider there will be a border element (SBC, soft- MSC, or SS/MG) FNO BE IPX carrier IPX Proxy IPX carrier IPX Proxy BE MNO/FNO IPX carrier IPX carrier ISP IPX Proxy BE BE IPX Proxy MNO Acme Packet CONFIDENTIAL - IPX Solution Overview Page 13
14 Why support IPX Avoid becoming a dumb pipe with low value and low margins Unlike public Internet, IPX provides interconnection and transitservices with assured security and controlled QoS Compelling value proposition: Simplified operations Common charging principle SLAs Multiple connectivity models IPX carrier can provide additional services beyond transit Transcoding Protocol interworking ENUM & number resolution Acme Packet CONFIDENTIAL - IPX Solution Overview Page 14
15 Why should and MNO/FNO use an IPX carrier? Assure end-to-end delivery of VoIP and interactive IP communications Packet voice (SIP, SIP-I) RCS Services Instant messaging and presence Video sharing Image sharing Service Hub mode: simplified operations Cascade billing Contract with few IPX carriers instead of 100s of Service Providers (MNO/FNO) Long distance and interconnection with small players IPX services are standardized Common charging principle Technically inter-operable end to end Agreements specified in a Contract Service Schedule containing SLAs Connectivity model Operator interconnection list Acme Packet CONFIDENTIAL - IPX Solution Overview Page 15
16 Going beyond voice: RCS and IPX (animated slide) IM MSRP XDMS IM MSRP XDMS SIP (Packet Voice, Video Share, SMS) SIP (Video Share, MSRP, Presence HTTP (XCAP, SMTP) SIP (Packet Voice) IMS IPX IMS SIP (Packet Voice, Video Share, SMS) Broadband User Broadband User IP-SM-GW IP-SM-GW MAP MAP SIP (Video Share, MSRP, Presence) HTTP (XCAP, SMTP) TCP/UDP Media MSC Packet Voice SIP/SIP-I MSC SIP (Video Share, MSRP, Presence) HTTP (XCAP, SMTP) TCP/UDP Media PS CS CS PS CS-voice SMS Packet Voice SIP CS-voice SMS Acme Packet CONFIDENTIAL - IPX Solution Overview Page 16
17 i3 Forum s vision of IPX model The i3 Forum Carriers endorse the basic IPX concepts around having a reliable, trusted, secure and quality controlled international (voice) service Also the commercial requirements are endorsed More pragmatic and realistic approach in certain topics Security to be provided by Border Functions (SBCs) Quality-of-Service control Break-in/break-out Non-IPX TDM/IP Carrier Call Handling Functions CHF IPX Domain Call Handling Functions CHF Non-IPX TDM/IP Carrier SP A SP B Border Border Functions Functions SIP RTP Acme Packet CONFIDENTIAL - IPX Solution Overview Page 17
18 Future of IPX model Direct connectivity to Large Enterprises and Private Federations Direct connectivity to OTT Service Providers Evolution of IPX to Service Delivery Network (SDN) Large emphasis on Video and OTT Services Non-IPX TDM/IP Carrier Private Federation Call Handling Functions CHF IPX Domain Large Enterprise Call Handling Functions SP A SP B Border Border Functions Functions Acme Packet CONFIDENTIAL - IPX Solution Overview Page 18 CHF OTT Service Provider SIP RTP
19 LTE data roaming =Diameter Policy Exchange Controller All data is home routed i.e. sent to the home network S6a Diameter interface control plane for user information S8 interface user plane for data GTP (Generic Tunneling Protocol) or PMIP (Proxy Mobile IP) Not handled by PEC Home MSP Services & apps Core transport IPX carrier S6a Internet Aggregation PoP (EPC) S6a S8 Access Packet data DIAMETER eutran eutran 19
20 Net-Net Policy Exchange Controller Policy authorization, location, charging and service profile information using Diameter signaling IMS EPC IPX IMS EPC Exchange policy information sent between network elements or across network boundaries Control security, interoperability, routing & aggregation of Diameter signaling messages LTE Standards compliant RFC 3588 Diameter agent (relay or proxy) 3GPP Diameter Routing Agent (DRA) GSMA Diameter Edge Agent (DEA) LTE Acme Packet Confidential 20
21 But in Reality offload may be preferred WIFI/Hotspots Home/Business/Commercial/Municipal Networks DHCP Universal Orthogonal Billing/Privacy/Security Schemes Very High Capacity Home MSP Services & apps Core transport Internet IPX carrier S6a Internet Aggregation Hotspot WIFI S6a S8 Access Packet data DHCP eutran eutran 21
22 Roaming for Services in IMS There are various approaches to roaming in IMS Home routed with data backhaul to home network (existing data model) Distributed policy control with policy interfaces Visited P-CSCF with policy control in visited network Visited services with IMS core in visited network One Voice / IR.92 selected Visited P-CSCF model Provides strong balance of visited control and home visibility/services Home Routed Distributed Policy Control Visited P-CSCF Visited Services Home Network PCRF H-PCRF PCRF PCRF V-PCRF Visited Network eutran eutran Acme Packet confidential eutran eutran 22 22
23 Pragmatic pure IP connectivity may be preferred Services will be branded and unique Delivered over the top of other IP Access Networks to ensure uniform delivery Universal Interop at the SIP layer not possible in near future Current Network Operators will be OTT Reachable Provide universal access to services Requirement for other devices/networks Charging for data roaming only Possibly separate HSS for Data & Services Supports Policy & Charging Home Data Center(s) H-PCRF Internet Hotspot WIFI S6a S8 IPX carrier (optional) Packet data eutran DIAMETER eutran Acme Packet confidential 23
24 Data Center Approach to IMS Deploy Data Centers Create a Service Delivery Network Has Public Addresses Universally reachable All applications must work everywhere Must work across all access networks Single-Sign On Required Phone & Service must easily move between: - Different LTE providers - Different IP Access Networks ( reachable) Avoid Re-authentication Retains service context with no loss of service Support 3G Roaming (ATCF) EPC Role Redefined Only an Access Network No Service Infrastructure No Service participation Roaming is for Data Only 3G Net Data centers LTE EPC Backbone LTE EPC 2 1 FTTx Ubiquitous Service Area Other IP Nwk IPX
25 VoLTE Conclusions for i3forum Current Roaming models are impractical, and not likely to survive long term Backhaul of bandwidth too expensive SIP UA Universal Interoperability not likely soon Service Differentiation by carriers not possible IPX Opportunities in LTE Access/Authentication/Identity/Trust during roaming Charging during roaming Connections to existing 3G Connections between LTE Providers PSTN Terminations Connections to Enterprises Connections to Federations Acme Packet Beta footer test Page 25
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