ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006
International Telecommunication UnionITU-T
Evolution from PSTN to NGN in Evolution from PSTN to NGN in ChinaChina
Fan DongyangSiemens Communication Networks
Ltd., Beijing
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 2
ITU-T
IMS NGN is now
Digital Nanning
“We are very impressed with the ability of Siemens Communications to bring together the vastly different domains of communication, data and
applications. And I hope that the innovative technology from Siemens will put us up with the leaders in information provisioning in China and throughout
Asia” Liu Qi-Bao, Deputy Governor of Guangxi Province.
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 3
ITU-T
Every road leads to NGN
PSTN
NGN
Emulation Emulation
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 4
ITU-T
Call Server based Emulation Approach
o Call Server (softswitch) development in China
1. Standardization since 19992. Replacement and “Intelligence”
o Further evolution from Call Server based to IMS based NGN with consideration of Fix-Mobile Convergence (FMC)
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 5
ITU-TFixed-Domain (VoIP)
available today
MGW
PLMN
PSTN
SSVoiceApp.
SIP fixed IP Clients Other fixed IP Clients
ApplicationApplication
ControlControl
Fixed AccessFixed Access
Mobile Domain (PS)
HSS CSCF
Mobile IP Clients
Session control
Client
Presence
LocationMessaging
Applications
Evolution towards IMS based NGN(FMC)current isolated network
Pre-paidUPT
CRBT
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 6
ITU-T
ApplicationApplication
ControlControl
Fixed AccessFixed Access
Fixed-Mobile Converged DomainFixed-Domain (VoIP) available today
Mobile Domain (PS)
MGW
PLMN
PSTN
SS
SIP fixed IP Clients Other fixed IP Clients
HSS CSCF
Mobile IP Clients
Session control
Client
Presence
LocationMessaging
Applications
VoiceApp.
Legacy Interworking
MGCF+SS
Evolution towards IMS based NGN(FMC)future convergence network and service
Pre-paidUPT
CRBT
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 7
ITU-T
Future-proof investment with standardized solutions
IP Multimedia Subsystem (IMS)IP Multimedia Subsystem (IMS)
Fixed AccessDSL, Cable, Fiber, …
Fixed AccessDSL, Cable, Fiber, …
Mobile Access2G, 3G, CDMA, …Mobile Access2G, 3G, CDMA, …
WLANWiMax
WLANWiMax
Presence MessagingBusiness
Connection ConferencingConsumer
Voice-over-IP
New converged fixed-mobile services with one standard compliant architectureNew converged fixed-mobile services with one standard compliant architecture
ITU-T Workshop “NGN and its Transport Networks“Kobe, 20-21 April 2006 8
ITU-T
Thank You
Contact:[email protected]
