A Class 4 softswitch is a carrier-grade switching system that routes large volumes of voice traffic between networks — connecting carriers, VoIP providers, and telecom operators at the wholesale level.
Unlike Class 5 switches, which handle end-user features like voicemail and call forwarding, Class 4 systems are purpose-built for high-capacity transit routing, least-cost routing decisions, and inter-carrier interconnection.
46 Labs' PeerEdge Voice Infrastructure replaces legacy Class 4 hardware with a software-defined environment that gives carriers real-time routing control without on-premise hardware constraints.
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