A brief tutorial on SCTP. Lots of explanatory diagrams, flowcharts, etc.

The IEC web site also has many other tutorials on telecom topics, including optical networking, global interconnection, DSL and cable modems, MPLS, SS7, WDM, FTTH, echo cancellation, GSM, HFC, SONET, UMTS, PCS, and much more.

"Stream control transmission protocol (SCTP) is an end-to-end, connection-oriented protocol that transports data in independent sequenced streams. SCTP endpoints support multi-homing; therefore, interface redundancy is built into the protocol. Through selective transmission mechanisms, SCTP resolves errors and buffers the data transmission process"

Tutorial: Stream Control Transmission Protocol (SCTP) | IEC