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