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Telecom Foundations
Standard TCP and UDP were not designed with telecom signaling requirements in mind, which led to the development of specialized protocols. SCTP, the Stream Control Transmission Protocol, was purpose-built for carrying signaling messages across telecom networks. It delivers the reliability of TCP with the message-boundary preservation of UDP, and adds multi-homing support that allows a single connection to span multiple IP addresses for redundancy. If one network path fails, SCTP seamlessly switches to the backup without dropping a single signaling message, making it the protocol of choice for…
Try these first, even if you're not sure. Guessing primes your brain.
A tower loses its link to the core for one second. What happens?
Why run the control link over two paths at once?
Why protect control messages more than voice packets?
Answer all 3to continue — it's OK to be wrong.