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IMS: Walled In or Open Does the Open IMS exist? Spring 2006 VON Europe (361) Colin Pons May 18, 2006
Contents <ul><li>Hype, Buzz and Confusion </li></ul><ul><li>KPN’s view on IMS </li></ul><ul><ul><li>Get Real, IMS has valu...
Statements like ‘keep in control’ fuel heated debates… ….and with good reason May 18, 2006 IMS: Walled In or Open? IMS por...
Getting the significance of IMS right <ul><li>The telco industry holds a conservative vision of SIP and IMS, analyzing the...
SIP is already complex enough, let’s not complicate matters even more: Keep It Simple, Stupid <ul><li>Not all of IMS </li>...
Where does IMS fit, naturally? <ul><ul><li>Identity management </li></ul></ul><ul><ul><li>Presence location </li></ul></ul...
But this is not the end-game…so, what’s next <ul><li>P2P SIP </li></ul><ul><ul><li>Operators can still be around to provid...
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  1. 2. IMS: Walled In or Open Does the Open IMS exist? Spring 2006 VON Europe (361) Colin Pons May 18, 2006
  2. 3. Contents <ul><li>Hype, Buzz and Confusion </li></ul><ul><li>KPN’s view on IMS </li></ul><ul><ul><li>Get Real, IMS has value, .. </li></ul></ul><ul><ul><li>..but simpilicity rules! .. </li></ul></ul><ul><ul><li>..however mobile? </li></ul></ul>IMS: Walled In or Open? May 18, 2006
  3. 4. Statements like ‘keep in control’ fuel heated debates… ….and with good reason May 18, 2006 IMS: Walled In or Open? IMS portrayed by Telco’s as ‘Defense’ against Internet Services, perceived as the “IP/Internet Monetizing System” by others
  4. 5. Getting the significance of IMS right <ul><li>The telco industry holds a conservative vision of SIP and IMS, analyzing their characteristics through the prism of legacy telco technologies. </li></ul><ul><li>However SIP focuses on enabling service delivery by third parties… </li></ul><ul><ul><li>Multimedia may include voice, video, voice bursts (push-to-talk), messaging, gaming, application sharing, shared browsing, whiteboard… </li></ul></ul><ul><ul><li>Media types can be added, removed or replaced at any time in the session </li></ul></ul><ul><li>... and between peers </li></ul><ul><ul><ul><li>Devices (in same or different operators‘ domain) </li></ul></ul></ul><ul><ul><ul><li>Devices and application servers (in same or different operators‘ domains) </li></ul></ul></ul><ul><ul><ul><li>Application servers (in same or different operators‘ domains) </li></ul></ul></ul>IMS Core May 18, 2006
  5. 6. SIP is already complex enough, let’s not complicate matters even more: Keep It Simple, Stupid <ul><li>Not all of IMS </li></ul><ul><ul><li>Seperated routing database and authentication: HSS </li></ul></ul><ul><ul><li>SIP Proxy connected to this database: (S-)CSCF </li></ul></ul><ul><ul><li>Depending on access network a P-CSCF/PDF (mobile access) </li></ul></ul><ul><ul><li>Interconnect: MGCF/MGW </li></ul></ul>IMS: Walled In or Open? KPN design principles and design guidelines states “no service intelligence shall reside in the IMS Core elements”. HSS CSCF
  6. 7. Where does IMS fit, naturally? <ul><ul><li>Identity management </li></ul></ul><ul><ul><li>Presence location </li></ul></ul><ul><ul><li>User preferences and profiles mediation </li></ul></ul><ul><ul><li>Service and Personal Mobility </li></ul></ul><ul><li>This calls for: Preserve the E2E principle </li></ul>DSL Fiber WiFi WiMAX GPRS UMTS ISP Core IPTV Core IMS Core Transport: IP/Ethernet Apps Email, etc IPTV Apps IPTV, VoD SIP Apps VoIP, PSTN Emu SIP Apps IM, etc Web Apps Real-Time IP Communication Applications Voice Only Applications IMS: Walled In or Open? May 18, 2006 KPN Strategy: Making Internet even more significant for our consumers
  7. 8. But this is not the end-game…so, what’s next <ul><li>P2P SIP </li></ul><ul><ul><li>Operators can still be around to provide Identity Management, Trust, preference/profile mediation, etc </li></ul></ul><ul><ul><li>IMS is transitional technology. But are not all technologies? </li></ul></ul><ul><li>WiFi/SIP enabled phones </li></ul><ul><ul><li>UMA is a dead-end. It does not allow service convergence. It extends the Mobile Radio Interface over Fixed Broadband. </li></ul></ul><ul><li>Ubiquitous Access and Transport </li></ul><ul><ul><li>‘ Unfettered’ Access to (Internet) applications is Good Business, although access and transport are commodity. </li></ul></ul><ul><ul><li>Mesh Networks </li></ul></ul>

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