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Pstn Migration To Ngn


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Pstn Migration To Ngn

  1. 1. PSTN Migration to NGN I Page 1 of 23 © KEYMILE
  2. 2. CONTENT SOLUTION NGN CONCLUSION Content The Path to NGN Solution MileGate/UMUX in NGN Conclusion I Page 2 of 23 © KEYMILE
  4. 4. CONTENT SOLUTION NGN CONCLUSION The Path towards NGN Solution NGN Why migrate? migrate Step 1 What requirements? requirements Step 2 Which architecture? Step 3 PSTN I Page 4 of 23 © KEYMILE
  5. 5. CONTENT SOLUTION NGN CONCLUSION Step 1 – Why migrate to NGN?  Telecom service provider  PSTN infrastructure renewal  Network extension: Greenfield and rural areas  Improve OPEX, reduce CAPEX  Provide new services  Virtual voice service provider  Reduce costs: Bypass other operators’ network  Provide new services (IP Centrex)  ISP/broadband provider  Extend business with voice services to broadband customers  Extend addressable market to narrowband customers I Page 5 of 23 © KEYMILE
  6. 6. CONTENT SOLUTION NGN CONCLUSION Legacy and NGN Services of Fixed Line Operators Legacy Services NGN Services POTS Voice ISDN BRA VoIP ISDN PRA DSL (IP/Ethernet) Dial-In Internet Access 100BaseT DSL (ATM) 1 GbE PDH/SDH (LL) DSL (IP/Ethernet) X.21 … Data 100BaseT FR 1 GbE ATM Relevant for Residential Business I Page 6 of 23 © KEYMILE
  7. 7. CONTENT SOLUTION NGN CONCLUSION What will be the impact of legacy voice in the operators‘ business? Fixed retail telecom services (World) 800.000 Legacy services will not be 700.000 neglectable for many years 600.000  Legacy voice revenues will decline 500.000 sharply, but it will still deliver a major part US$ (Mill.) of the revenues. 400.000  Legacy data will decline smoothly 300.000 200.000 100.000 0 2005 2010 Broadband, Internet & NGN Data NGN Voice Legacy Data Legacy Voice Source: Gartner 2006 & own calculations I Page 7 of 23 © KEYMILE
  8. 8. CONTENT SOLUTION NGN CONCLUSION PSTN Migration to NGN – Architectural View MONOLITHIC SWITCH ARCHITECTURE TDM Class 5 Switch Open, standardised Interfaces NGN ARCHITECTURE I Page 8 of 23 © KEYMILE
  9. 9. CONTENT SOLUTION NGN CONCLUSION NGN vs. PSTN (Telephony) TRADITIONAL ARCHITECTURE ISDN, Q.931 Switch Fabric Signalling NT SS7 Controller Links Line Cards POTS, CAS t/r Trunk Class 5 PSTN Cards Switch TDM Switch NGN ARCHITECTURE ISDN, Q.931 Media Gateway Signalling NT SS7 Controller Gateway Media Gateway POTS, CAS t/r Trunk Class 5 Packet Network PSTN Gateway Switch I Page 9 of 23 © KEYMILE
  10. 10. CONTENT SOLUTION NGN CONCLUSION Step 2 – Which Requirements? Increase Revenues & Leverage the revenues of Profitability Implement "new" residential and business  POTS services  ISDN Reduce  IPTV (Triple Play)  Leased Lines OPEX  VPN  … Maintain Increase  LAN-LAN legacy services new services  … revenues revenue  Migrate legacy services to NGN platforms  Reduce no. of operational platforms  Enhance OAM&P processes I Page 10 of 23 © KEYMILE
  11. 11. CONTENT SOLUTION NGN CONCLUSION Step 2 – Reference Case Customer Speed to experience and market empowerment Cost transformation The transformation has a radical strategy …  Broadband everywhere…  Replacing the PSTN  PSTN transformation trial  A world first for a telecom company I Page 11 of 23 © KEYMILE
  12. 12. CONTENT SOLUTION NGN CONCLUSION NGN Voice Service Provisioning GW = Gateway TDM POTS GW ISDN Soft Switch 1 2 TDM POTS 3 ISDN 4 H.248/SIP Trunk GW Packet Network NT-1 Access GW POTS (Core/Metro IP, MPLS) ISDN PSTN Signalling GW SIP SIP SS7 DSL/cable DSL/cable Residential POTS 1 = Centralised Gateway GW ISDN 2 = Access Gateway 3 = Residential Gateway 4 = Soft Phones I Page 12 of 23 © KEYMILE
  13. 13. CONTENT SOLUTION NGN CONCLUSION Step 3 – Which Architecture? MGC PSTN CO MGC BICC or H.248 TG SIP-T or SIP SS7 SG H.248 Packet or SIP SIGTRAN Network TG/SG NT-1 SIP or H.323 SIP or H.323 IP-Phone/ Multi-Media PC Proxy- Gatekeeper Server I Page 13 of 23 © KEYMILE
  14. 14. CONTENT SOLUTION NGN CONCLUSION Step 3 – Which Architecture? CLASS 4 NGN Signalling Media Gateway Signalling SS7 SS7 Gateway Controller Gateway CO Trunk Trunk CO PSTN Packet Network PSTN Switch Gateway Gateway Switch CLASS 5 NGN ISDN/ POTS/ Q.931 Signalling Media Gateway Signalling CAS t/r NT1 Gateway Controller Gateway POTS/ Media Media IAD CAS t/r Gateway Gateway Residential Packet Network gateway I Page 14 of 23 © KEYMILE
  15. 15. CONTENT SOLUTION NGN CONCLUSION Access Gateway Architecture – Distributed vs. centralised Application Server Continuity of service  Distributed PSTN, SS7 interworking  MGC Access Gateway Packet Costs ? swiched Application Server network MGC AG Metro Packet network swiched network AG AG ∎ New services ∎ Broadband services ∎ Triple Play Centralised Access Continuity of service  PSTN, SS7 interworking  Gateway Costs  I Page 15 of 23 © KEYMILE
  16. 16. CONTENT SOLUTION NGN CONCLUSION Advantages – Distributed Access Gateway Continuity of service  Distributed  Keep the phone, no re-cabling Access Gateway  Keep the service  No impact on end user Application Server MGC PSTN, SS7 interworking   Signalling gateways Packet  SIGTRA swiched network AG Costs   Less network element AG  Low incremental investment  Improve network availability  More efficient transmission capacity 1. Local Call Routing  Local call routing 2. Compression  Compression New revenue   Broadband services  Triple Play I Page 16 of 23 © KEYMILE
  17. 17. CONTENT SOLUTION NGN CONCLUSION KEYMILE’s Ways to NGN Voice  KEYMILE provides two platforms to support the migration of legacy voice  Next Generation Digital Loop Carrier (NG DLC) UMUX  Broadband Loop Carrier (BLC) MileGate I Page 17 of 23 © KEYMILE
  19. 19. CONTENT SOLUTION NGN CONCLUSION MileGate as BLC  Core Network Core Network C I O METRO S P G Gigabit Node S U S E Ethernet U I x 1 P Q 2 Telephony M 1 H.248 or Soft 3 SIP Switch POTS Voice SUPM3: 32 POTS Ports SUIQ1: 16 ISDN Ports METRO/REGIONAL ISDN NETWORK NTBA IPSx2: H.248 or SIP 608 subscribers ACCESS SUBSCRIBER I Page 19 of 23 © KEYMILE
  20. 20. CONTENT SOLUTION NGN CONCLUSION UMUX in Telephony NGN Circuit Switched Network (PSTN) Trunk Gateway Packet Switched IP over Ethernet Network (IP) ISDN PRA H.248/MEGACO SIGTRAN Media Gateway ISDN BA Controller IVR MelCAS E1 POTS t/r KEYMILE offers an Access Gateway (IP Subscriber Media Gateway – IPSMG) I Page 20 of 23 © KEYMILE
  21. 21. CONTENT SOLUTION NGN CONCLUSION V5.2 to MEGACO Migration in UMUX UNEM Release R5C PSTN/ISDN PSTN Local V5.x Exchange PDH/SDH Network UNEM Release R7 Voice Access Media Gateway Controller Voice Telephony Packet Switched Access in NGN Network (IP) POTS/ISDN in NGN I Page 21 of 23 © KEYMILE
  23. 23. CONTENT SOLUTION NGN CONCLUSION Conclusion PSTN migration to NGN  NGN will happen, technology is maturing  Benefits are cost savings, new services, speed to market  Distributed access gateway provides more flexibility and better cost  Legacy voice services will continue to  Plan, try and deploy! represent an important revenue stream  Reduction on operational expenses require the migration of voice services to NGNs  Distributed access gateway provides more NGN flexibility and better cost  KEYMILE supports VoIP Media gateways based on H.248/MEGACO and SIP Costs  KEYMILE provides VoIP-Media Gateway Service New solutions on its both platforms Continuity Revenue MileGate & UMUX I Page 23 of 23 © KEYMILE