Information and Communication Networks Challenges and Opportunities Advantages of a new architectural paradigm PSTN Switch Line Card Trunk I/F Trunk I/F Line Card Switching matrix Call Processor, SS7 Processor Maintenance & Administration SS7 Distributed MSF* Architecture Open platforms Open interfaces between all components Softswitch provides Trunk- and Local-Switch features Gateways support various media stream conversions Integrated functionality Proprietary platforms and partly proprietary feature development Standard IN interface for externally-provided services IP/ATM Network Subscriber Gateway Subscriber Gateway Trunk Gateway Trunk Gateway Signalling Gateway Softswitch SS7 *MSF=Multiservice Switching Forum; defined a widely accepted architectural model for carrier con
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Information and Communication Networks
Challenges and Opportunities Advantages of a new architectural paradigm