> For the complete documentation index, see [llms.txt](https://prosbcdocs.telcobridges.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://prosbcdocs.telcobridges.com/telecom-references/ss7-and-signalling/sctp.md).

# SCTP

The Stream Control Transmission Protocol (SCTP) is a Transport Layer protocol, serving in a similar role as the popular protocols Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). Indeed, it provides some of the same service features of both, ensuring reliable, in-sequence transport of messages with congestion control.

In a nutshell, SCTP was selected by the SIGTRAN IETF workgroup mainly because of these features:

* Connection oriented - Establish connection between endpoints.
* Reliable transport - Enable acknowledgment of data.
* Multiple streams - Separate data in independent streams of chunks in parallel.
* Ordered delivery - Guaranties order of data from each stream independently.
* Congestion control - Congestion control is stream independent.
* Multi-homing support - Enables transparent fail-over between redundant network paths.

### TelcoBridges and SCTP

TelcoBridges supports SCTP as a mandatory component of its [SIGTRAN](https://telcobridges.com/media-gateways/solutions/signaling/migrating-ss7-sigtran/) implementation.

### References

* [Wikipedia article](http://en.wikipedia.org/wiki/Stream_Control_Transmission_Protocol)


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