Development Scenario of SoftSwitch Development Scenario of SoftSwitch Standards in China and China Telecom’ ’s s Standards in China and China Telecom Considerations on Network Evolution Considerations on Network Evolution Ms. Zhao Huiling Huiling Ms. Zhao Chairperson of the Network and Switching Chairperson of the Network and Switching Technical Committee of CCSA Technical Committee of CCSA Vice President, Beijing Research Institute of China Vice President, Beijing Research Institute of China Telecom Telecom xiecf xiecf
Outline SoftSwitch Standards Development in CCSA China Telecom’s Considerations on Network Evolution China Telecom Beijing Research Institute http://www.ctbri.com.cn 2 xcf
Development of SoftSwitch Industrial Standards CCSA started to develop specifications and standards related to softswitch network in 2001, which include: Network equipment specifications and relevant testing specificat Network equipment specifications and relevant testing specifications ions Network protocol specifications and relevant testing specifications ons Network protocol specifications and relevant testing specificati Softswitch- -based interface specifications and relevant testing specificatio based interface specifications and relevant testing specifications ns Softswitch Access equipment and terminals specifications and relevant testing ng Access equipment and terminals specifications and relevant testi specifications specifications Softswitch Softswitch- -based access management specifications and relevant testing based access management specifications and relevant testing specifications specifications Service architecture/API/service classification and general requirements irements Service architecture/API/service classification and general requ CCSA has published 59 series of softswitch specifications up to now. China Telecom Beijing Research Institute http://www.ctbri.com.cn 3 xcf
SoftSwitch Functional Architecture Service creation APIs AAA Server App. Server NMS Server Radius To be decided SNMP H.323 H.323/IP Address Resolution/Routing SoftSwitch device Telephone SS7/IP Interworking Function SIP Service Provision SIP System Signaling Network Management, Billing Gateway SIP/BICC SoftSwitch SSF INAP/IP Signaling Call control Current IN Gateway NO.7 H.248 Media SIP H.248 MGCP Gateway Terminal Terminal Terminal China Telecom Beijing Research Institute http://www.ctbri.com.cn 4 xcf
Delivery of NGN Services PSTN /ISDN PSTN /ISDN IP From From Emulation Simulation Multimedia Service Service Service Service Service point of point of view view Rf/Ro ASF ASF Network Border Network Border Charging Ut (may include own Authentication, Authorization and Accounting) (may include own Authentication, Authorization and Accounting) AS Functions Sh Dh APL GW APL GW I9 I9 I10 I10 I10 I10 I12 I12 ISC UPSF Iw Other IP MM Other IP MM I9 I9 SLF Rf/Ro Dx Cx IWF eg:IMS eg:IMS Ib I15 I15 Network From Attachment Mw From Mw/Mk/Mm SPF SPF SSF SSF Subsystem IBCF Ic I/S-CSCF I11 I11 I14 I14 « Core IMS » Mk Other PES Other PES Mi UPF UPF PGCF PGCF CCF CCF SIF SIF network BGCF Mk e2 network Mw Other IP Networks RF RF Mr Mj Gq' point of Mg point of P-CSCF SGF AGCF AGCF MRCF MRCF MGCF MGCF MGCF MRFC Ie view view I8 I8 PSTN/ISDN I5 I5 Gq' RACF RACF Mp Mn Gm I6 I6 I7 I7 I4 I4 Resource and Admission Control Subsystem PGF PGF I1 I1 I3 I3 MRPF MRPF SGF SGF MRFP I2 I2 T-MGF ABGF ABGF I13 I13 PSTN/ISDN PSTN/ISDN Legacy Legacy Packet Transport Packet Transport UE AMGF AMGF IP Transport (Access and Core) I-BGF TMGF TMGF teminal teminal Functions Functions CS based IMS based CS based IMS based China Telecom Beijing Research Institute http://www.ctbri.com.cn 5 xcf
CCSA’s Contribution to International Standards China submitted a total of 270 NGN-related contributions to ITU-T SG11/13/19/FG from 2005 to February 2006. The contributions cover a wide range of areas including service requirement, architecture, security, QoS, future bearer network, network evolution, signalling, FMC,and user database. The quality of contributions is improving. 19 draft recommendations on international standards were developed based upon China’s proposals. Breakthroughs were made in the following areas: – Call server-based PSTN/ISDN Emulation: architecture and network delivery. – Resources control, including signalling requirement and relevant requirements – FMC: requirement and delivery China Telecom Beijing Research Institute http://www.ctbri.com.cn 6 xcf
Agenda SoftSwitch Standards Development in CCSA China Telecom’s Considerations on Network Evolution China Telecom Beijing Research Institute http://www.ctbri.com.cn 7 xcf
China Telecom Status (by 2006.2) PSTN subscribers 154.5M PHS subscribers 58.52M Total: 213 M Broadband subscribers 22.43M China Telecom Beijing Research Institute http://www.ctbri.com.cn 8 xcf
NGN Focuses at Different Stages Near-term: tap Mid-term: broadband Long-term: add value Maturity of broadband managemen potentials and enhance mgmt. and contr. efficiency And control technologies and completion of IMS equipment testin Deployment of large-scale softswitch network 1. Control of broadband value chain Deployment of small-scale 2. Completion of 1. Large-scale deployment softswitch network national/corporate IMS Completion of softswitch of smart HLR and standards softswitch networks national/corporate standards 3. IMS equipment testing, 2. Relations between IMS interconnection and 1.smart HLR trial and softswitch network access testing 1. Softswitch equip. 4. IMS trial deployment 3. IP backbone and IP spec. 2.soft switch networks 5. 3G larges-scale MAN 2. MGW equip. spec. trial Development 3. SIP spec. 3.Interconnection 6. FMC and Multi Play 4. H.323 spec. testing and 5. H.248 spec. network access 6. MGCP spec. testing Transition 7. Sigtran spec. 8. … … 2001 2003 2005 2008 NGN focuses of China’s fixed operators: NGN focuses of China’s fixed operators: Near-term: enhance effectiveness and increase cash flow through network intelligence (smat HLR) Near-term: enhance effectiveness and increase cash flow through network intelligence (smat HLR) Mid-term: improve the manageability and operability of broadband networks and create a rational broadband value chain Mid-term: improve the manageability and operability of broadband networks and create a rational broadband value chain to facilitate the transformation to facilitate the transformation Long-term: add values (multiplay and FMC) based upon an integrated, manageable and operable broadband network. Long-term: add values (multiplay and FMC) based upon an integrated, manageable and operable broadband network. China Telecom Beijing Research Institute http://www.ctbri.com.cn 9 xcf
Smart HLR Introduced to Fixed Network SCP APP Server APP Server SCP SCP APP Server Smart HLR system Application Platform components ： OSS/BSS INAP/SIP… eg.MAP/Diameter － Core: SHLR － Switch,Softswitch SHLR SHLR SHLR － Application platform － BSS/OSS Extend ISUP/ Extend MAP Switch Softswitch China Telecom Beijing Research Institute http://www.ctbri.com.cn 10 xcf
Case of SHLR Trial and Operation in Fujian Subsidiary Oct. 2003 Initial trial in Quanzhou Branch Oct. 2004 Commercial operation in Quanzhou Branch I nvestment Jan. 2005 Full upgrade in Fujian Subsidiary RMB/User* 11.2 New Services Provided 4.5 SHLR Platform Construction Number Portability Simultaneous ring Fixed-phone personal ring tone One number … … 5.6 Switch Software&Hardware Upgrade • Outcome as of Sept. 2005 Over 470 thousand users, accounting for 1.1 Supporting System Re-construction around 4% of total local subscribers More than RMB 32 million revenue Note: * Users based on total local subs as of 2004 China Telecom Beijing Research Institute http://www.ctbri.com.cn 11 xcf
China Telecom’s SoftSwitch Strategy Drives for evolution to softswitch Drives for evolution to softswitch Requirements of Requirements of SS7 SS7 Long Distance Network Long Distance Network Long Distance Network Long Distance Network Long Distance Network Long Distance Network Long Distance Network Long Distance Network AS Requirements of Requirements of Integrated Services Integrated Services SG PSTN capacity expansion PSTN capacity expansion Toll Office Toll Office Softswitch Local Network Local Network Local Network Local Network Local Network Local Network Local Network Local Network TG Tandem Office Tandem Office Requirements of Requirements of AG IAD Requirements of Requirements of TDM Switch substitution TDM Switch substitution End office End office New Subscriber expansion New Subscriber expansion POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS POTS PSTN Softswitch Network PSTN Softswitch Network China Telecom Beijing Research Institute http://www.ctbri.com.cn 12 xcf
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