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I'm trying to understand the terminology used in the specifications of several satellite systems, such as those outlined on pages 9-11 here.
I'm guessing a mobile uplink/downlink is RF uplink and downlink that can communicate with mobile phones, but I can't find anything in my searches that defines feeder downlink.
When a satphone user calls someone who uses a 'normal' landline, the call is routed from the satphone to the satellite (through the mobile up/downlink), then from the satellite to a ground station (through the feeder up/downlink), and the ground station connects the call to the landline phone network.
Usually, a satellite has many mobile links, and one feeder link. The satellite bundles the data from all mobile links into the one feeder link.
Feeder link is from the Gateway to the satellite Check the image on Slide#3 of the link
