This counter tracks the total number of packets the router has sent to the Endstation from one of its interfaces, i.e., traffic destined for the locally attached terrestrial equipment. This is the mirror image of cdd564TotalPacketsFromEndstation, and comparing the two shows whether the Endstation-facing session is symmetric or one-directional; a router relaying a bidirectional data circuit should show both counters climbing at comparable rates, while a receive-only feed would show this counter growing while the other stays near zero. For a site relaying telemetry from a remote sensor via the Endstation port, an admin would expect a steady trickle rather than large bursts, since sudden jumps could indicate a retransmission storm on the terrestrial side.