3.1.1.4.1 Lost Datagrams

Lost datagrams notification is a part of the Congestion Control ADM element implementation. It is used to control the rate of the data that is transferred between the endpoints as described in section 5.1.3.

The receiver marks a datagram as lost only when it receives three other datagrams after its original transmission, with sequence numbers greater than the original datagram. Similarly, the sender marks a packet as lost only when it receives an acknowledgment (section 3.1.1.4) for any three packets that have a sequence number greater than the lost packet.