= Differentiated Services Codepoint: Default (0) Following is SCTP initial setup process captured with Wireshark from Amarisoft Callbox. As shown below, SCTP goes through 4 step handshake whereas TCP goes through 3 way handshake. Like TCP, SCTP also requires the initial handshake to establish the connection between two end points. If you take packet capture (e.g, Wireshark capture) over the interface, you would get the packet structure as below. Structure of the protocol stack for these interface is illustrated as below. In cellular communication system, SCTP is the protocol being used in the communication between eNB and MME(4G) and the protocol being used between gNB and AMF as illustrated below. Watch videos in Reference Section if you want to learn further details on SCTP protocol in general. It is similar to TCP in terms of fundamentals but added some features which would compensate the weak spot of TCP.
As its name implies, it is a Trasport Protocol like TCP. SCTP stands for Stream Control Trasport Protocol.
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