This whitepaper argues that Session Border Controllers are no longer just tactical interconnect devices, because cloud adoption, LTE/5G evolution, and shifting customer demand are pushing operators to treat SBCs as core enabling infrastructure where dynamic scalability, automation, and new interfaces are becoming essential. It highlights multiple near-term business cases: helping MVNOs evolve from “light” to “full” models by securing interconnect and increasing routing options, including native Diameter support to enable real-time online charging via the Ro interface for prepaid and OTT voice; supporting IMS and VoLTE deployments by acting as a SIP proxy (P-CSCF) and maximizing interoperability across peer networks and VoLTE clients; enabling voice services on private LTE/non-public networ

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