Airlink101 AP431W User Manual page 37

DTIM: The default value is 1. This value, between 1 and 255 milliseconds, indicates the
interval of the Delivery Traffic Indication Message (DTIM). A DTIM field is a countdown
field informing clients of the next window for listening to broadcast and multicast
messages. When the Access Point has buffered broadcast or multicast messages for
associated clients, it sends the next DTIM with a DTIM Interval value. Its clients hear the
beacons and awaken to receive the broadcast and multicast messages.
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