This object is the minimum retransmission timeout this specific association's SCTP implementation will use, in milliseconds. For latency-sensitive telephony signaling, a low RtoMin lets the stack retry quickly after a loss, which matters because the object's own description notes some telephone applications need under a second; setting it too high delays recovery from even a single lost signaling packet. A value of 500 milliseconds on a voice signaling association means the fastest the stack will retry after a suspected loss is half a second, versus the more conservative 1000 millisecond floor generally recommended.