NGN Migration Strategies NGN Migration Strategies

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<ul><li> 1. NGN Migration Strategies Tony Downes MetaSwitch td@metaswitch.com December 4, 2001 </li> <li> 2. The MetaSwitch Perspective A division of Data Connection (DCL) 20-year history providing core technology to major vendors (Cisco, Lucent, Nortel, ) and service providers (Verizon, SBC, BT, ) Technology agnostic IP, ATM, SS7, Whatever works and meets the customer need MetaSwitch VP3000 NextGen Class 5 Broadband (VoIP/VoATM) and Legacy PSTN access </li> <li> 3. NGN Migration Its obvious Reduced capex, reduced operational costs Network convergence one network for voice and data New service opportunities But how to get there? Multiple architectural models? Immature and evolving standards? Concerns about reliability Concerns about vendor staying power How to minimize capex, maximize returns </li> <li> 4. Key Issues Location of service intelligence? Open and mature standards Convergence of access network Convergence of backbone network Integration with legacy POTS and PSTN Analog POTS + DLCs SS7/TDM, 911, 1-800, LNP, CALEA, Ready to deploy? Vendor stability? </li> <li> 5. NGN Migration Legacy Stick with Legacy Class 4 and 5 Also known as do nothing for now Pro Proven technology Relatively cheap to buy (now) Con High operations costs Multiple data and voice networks Limited opportunity for new services Strategy for future? </li> <li> 6. NGN Migration Greenfield Softswitch + distributed architecture + IP phones Pro No pre-existing infrastructure Con Standards are still being defined Interoperability islands + Risk of vendor lock-in Limited management tools? Legal requirements to integrate e.g. 911? Reliability of equipment Stability of vendors </li> <li> 7. NGN Migration NGN Class 4 Packet Backbone NGN Class 4 PSTN Class 5 SS7 signaling / TDM trunks Packet voice (SIP+RTP) Analog voice (POTS) </li> <li> 8. NGN Migration NGN Class 4 Incremental migration to NGN Class 4s Pro Technology is largely proven Exploits packet backbone Con Backbone protocols still have proprietary elements Does not help with NGN access Service intelligence is still in PSTN (Class 5s) Doubtful migration Can vendors build NGN Class 5? </li> <li> 9. NGN Migration Voice over Broadband Packet Backbone PSTN IAD DSLAM VoB Gateway Class 5 Broadband data + voice (VoIP, VoATM) SS7 signaling / TDM trunks GR-303 / TR-008 Internet (data) </li> <li> 10. NGN Migration Voice over Broadband First generation Voice over Broadband Gateways Pro Standards do exist (ATM Forum BLES) IADs, DSLAMs and Gateways do interoperate Converged access network Con Does not address legacy access Does not help with NGN backbone Service intelligence is still in PSTN (Class 5s) Doubtful migration - Can vendors build NGN Class 5? </li> <li> 11. NGN Migration NGN Class 5 Packet Backbone PSTN IAD DSLAM PBX / Router MetaSwitch VP3000 DLC Broadband data + voice (VoIP, VoATM) SS7 signaling / TDM trunks Packet voice (SIP+RTP) Internet (data) GR-303 / TR-008 Analog voice (POTS) </li> <li> 12. NGN Migration NGN Class 5 Pro Converged access Broadband VoIP and VoATM Legacy POTS and DLCs Converged backbone PSTN and Packet Full range of Class 5 intelligence features, routing, Integration with PSTN 911, 1-800, LNP, CALEA, Con Can the vendors deliver? Do the vendors have staying power? </li> <li> 13. NGN Migration - Conclusion NGN will happen Technology is emerging Will take longer than we think! Strategy? Pros and Cons to most strategies NGN Class 5 is best strategy Service providers need to be smart MetaSwitch VP3000 Genuine deployable NGN Class 5 MetaSwitch is solid stable vendor www.metaswitch.com/whitepapers/ </li> </ul>