SBC accomplishes many tasks, akin to a swiss army knife. With a rapid increase of SIP endpoints, SBCs become consumed with management. Deep packet inspection (DPI) needs can rapidly overwhelm SBC processing capabilities and can cause downtime.  Bifurcation of UCTM security to scale to 40,000 attack mitigations complements the SBC which is left to manage its core function around VoIP call management.
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