Why IMS & VoWiFi are the “Last Mile” of 5G Voice Stability
As operators scale 5G-Advanced in 2026, the "Indoor Gap" remains a critical challenge due to high-frequency signal attenuation. To maintain voice service continuity, a Converged IMS (IP Multimedia Subsystem) serves as the essential service anchor. By integrating VoWiFi (Voice over Wi-Fi) via N3IWF or ePDG interfaces, the core network can treat any Wi-Fi access point as a micro-cell. This architecture enables seamless, "zero-drop" handovers between 5G NR and non-3GPP networks. IPLOOK focuses on this multi-access interworking, ensuring that session persistence and security remain consistent regardless of the radio environment, effectively reducing subscriber churn caused by indoor blind spots.
