This product overview explains why SMS remains essential in 5G for IoT, OTA provisioning, multi-factor authentication, and interoperability with legacy networks, and introduces the 3GPP-defined SMS Function (SMSF) as the 5G core node that activates and delivers SMS. Enghouse Networks SMSF exchanges SMS with the 5G AMF over NAS and interworks with legacy SMS servers such as SMSC, SM Router, and IP-SM-GW using MAP/SS7 or Diameter SGd, while connecting to UDM via service-based interfaces to provision and activate MO/MT SMS services for 5G subscribers (page 1). It supports standalone 5G and sliced deployments from day one, includes subscription info management, SBI processing, SGd OFR/TFR handling, roaming/SEPP and PLMN management, caching and DB monitoring, and NFV deployment as a VNF (page 2

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