(1) A continuous signaling of error conditions on a local network (LAN). In a token ring network, a beacon frame is sent by the adapter if a failure in the line is detected. See beacon removal.
(2) In a wireless network, the continuous transmission of small packets (beacons) that advertise the presence of a base station (access point). The mobile units sense the beacons and attempt to establish a wireless connection. See hotspot and wireless LAN.
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