Aicent,Inc.ProprietaryandConfidentialAICENT1Agenda(Part2)3GRXNetworkTopology3GRXConnectionSetup3GRXEnd-to-EndQoSDNSConfigurationandSetupFirewallConfigurationSetupNew3GRoamingPartnerNetworkSupportProcedureAicent,Inc.ProprietaryandConfidential2AicentGRX/3GRXNetworkOneofthelargestglobalGRXproviders60+GPRS/3Goperatorsinallmajorcontinents‰19Peeringarrangements4world’slargestGSMoperators‰450+GPRS/3Gnetworksworldwide1+billiondirectlycoveredsubscribers‰4500+roamingcommercialroutesAicent,Inc.ProprietaryandConfidential3AicentGRX/3GRXArchitectureIO-MMSetc.VASLANRootDNSLANNMSLANPeering2.5G/3GBorderGRXandoperatorGatewayGPRSPEPOPPEPEPeerPOPPOPPPCoreBackbonePPPEBorderPEGatewayPOPAcessLayerPEPOP2.5G/3Goperator2.5G/3GBorderoperatorGatewayAicent,Inc.ProprietaryandConfidential4AicentGRXNetwork-NetworkSupportedbyBusinessPartnersASIA-PACSouthSub-MarineCableJapanUSKoreaChina–USAChinanJapan–USAiwaHongKongTaHawaiiAPCNAPCN2MalaysiaGuamSouthCrossingSee-Me-WeSingaporePrivateCable:FlagNorthAsiaLoopANC(AGC),FlagSouthAsiaLoopFijiJAPAN-USFLAG,AustraliaAUSTRALIA-JAPANSouthernCrossREACH,CHINA-USPC-1C2CNewZealandEACAicent,Inc.ProprietaryandConfidential5NetworkTopology-IPLCoverEACasthebackuprouteAicent,Inc.ProprietaryandConfidential6Agenda(Part2)3GRXNetworkTopology3GRXConnectionSetup3GRXEnd-to-EndQoSDNSConfigurationandSetupFirewallConfigurationSetupNew3GRoamingPartnerNetworkSupportProcedureAicent,Inc.ProprietaryandConfidential7IPVPNandLLCConnectionsIPVPN:GREoverIPSecTunnel„IPSec:(SecureInternetProtocol):toencryptpacketsoverInternet„GRE(GenericRoutingEncapsulation):tosolveroutingissuePro:„IPVPNcansavemuchcostwhenGRPSRoamingtrafficissmallCon:„IPVPNdependsonthereliabilityofpublicInternetInternetGREPhysicalISPISPconnectionIPSectoISPGPRSRoamingtraffic:--BGPOperator--GTPAicent--DNS--ICMP--etc.Aicent,Inc.ProprietaryandConfidential8IPVPNandLLCConnectionsLocalLeasedlineCirc