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Coming Back to an End-to-End ArchitectureNew Technologies/Applications for Home Users“Always-On”—Cable, DSL, Ethernet-to-the-Home, Wireless, etc.• Internet started withend-to-end connectivityfor any applications• Today, NAT andApplication-LayerGateways connectdisparate networks• Always-on devices needan address when youcall them:Mobile phonesGamingResidential Voice over IPgatewayIP faxGlobal<strong>Address</strong>ingRealmRST-130012394_04_2006_c2© 2006 Cisco Systems, Inc. All rights reserved. Cisco Public7

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