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Conceptual Architecture: Semi-Composed PE SF IP Phone IP Phone PSTN PSTN MG MG SS7 SS7 Wireless Wireless 3rd Party IP Network SF SF SF MPLS Switch/Media Relay SF MF RF H.248/SIP This architecture splits the Control and Bearer + Routing planes in separate devices. This is a one-to-one model Bearer (RTP/IP) Signal (SIP) MG: Media Gateway MGC: Media Gateway Controller LD: Long Distance CSCF MF + RF Media and Signal do need to flow the same network. OF functions distributed across entities Proxy MGCF CSCF Proxy MGCF |