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uplink (plural uplinks)
- The portion of a communications link used for the transmission of signals from an Earth terminal to a satellite or to an airborne platform. An uplink is the converse of a downlink. An uplink or downlink is distinguished from reverse link or forward link.
- By analogy and less formally, the communication path from a mobile device to a base station, a consumer to the network backbone, a client device to a server etc.
- Data transmission from a data station to the headend.
- GSM and cellular networks, uplink is the transmission path from a mobile station to the base station (cell site).
- To transmit a signal by means of an uplink.