Motorola Solutions WiNG 5.2.6 Reference Manual page 207

10. Set or override the following profile
Beacon Interval
DTIM Interval
Figure 5-79 Access Point Radio - Rates screen
WLAN Properties
Set the interval between radio beacons in milliseconds (either 50, 100 or 200).
A beacon is a packet broadcast by adopted radios to keep the network
synchronized. Included in a beacon is information such as the WLAN service
area, the radio address, the broadcast destination addresses, a time stamp,
and indicators about traffic and delivery such as a DTIM. Increase the
DTIM/beacon settings (lengthening the time) to let nodes sleep longer and
preserve battery life. Decrease these settings (shortening the time) to support
streaming-multicast audio and video applications that are jitter-sensitive.The
default value is 100 milliseconds.
Set a DTIM Interval to specify a period for Delivery Traffic Indication Messages
(DTIM). A DTIM is periodically included in a beacon frame transmitted from
adopted radios. The DTIM indicates broadcast and multicast frames (buffered
at the access point) are soon to arrive. These are simple data frames that
require no acknowledgement, so nodes sometimes miss them. Increase the
DTIM/ beacon settings (lengthening the time) to let nodes sleep longer and
preserve their battery life. Decrease these settings (shortening the time) to
support streaming multicast audio and video applications that are
jitter-sensitive.
Device Configuration 5 - 149
for the selected access point radio.