SCCP – Signaling Connection Control Part (SCCP) is a transport layer protocol that provides extended routing, flow control, segmentation, connection-orientation, and error correction facilities in
SCTP – Stream Control Transmission Protocol (SCTP) is a transport-layer protocol that ensures reliable, in-sequence transport of data. SCTP provides multihoming support where one or both
SCUR (Session Charging with Unit Reservation): SCUR is commonly used for data services with continuous usage. A session is established, and resources are reserved. The
SDAP – Service Data Adaption Protocol (SDAP) layer is the topmost L2 sublayer at 5G NR protocol stack Standalone Architecture (SA) where gNB connects to
SDCCH stands for Stand-alone Dedicated Control Channel. In cellular networks, particularly in GSM, it is a dedicated channel used for handling signaling and control functions.