The evolution of mobile networks presents a compelling picture of inheritance . Originally designed as a dedicated signaling network, SS7 (Signaling System #7) provided the vital infrastructure for early voice networks. As systems advanced, SIGTRAN emerged, translating SS7 messages into IP format to better interface with digital systems. This signi

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Historically, SS7 served as the core system for voice communication , reliably processing sessions across the PSTN . As infrastructure advanced, TAP emerged to link this legacy SS7 world with data technologies, permitting communication to flow over better digital links . This migration became critical for the emergence of LTE mobile systems, where