Motorola MICOM-2E ALE, Руководство пользователя

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MICOM-2E-ALE Owner’s Manual
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occupancy. A 60-minute cycle would result in 40% occupancy. A 90-
minute cycle would result in 27% occupancy. A 120-minute cycle would
result in 20% occupancy.
It can now be decided which sounding cycle is the best for any
particular network, taking into account the trade-offs described above.
Under field conditions, the occupancy will usually be less than the value
obtained from the chart because not every station receives all the
soundings that are being broadcast on all channels. However, if the
system manager wants to increase channel-free time for the users by
reducing network occupancy, it is possible to do so through four
methods, listed below in their order of preference:
1. Increasing the sounding cycle time (to 90 or 120 minutes).
2. Reducing the number of channels in the network (for example, by
using different nets for different times of day).
3. Reducing the number of stations in the network by re-arranging the
hierarchial subgrouping of stations.
4. Requesting all stations to set the fast scan rate option.
Immediate (Manual) Sounding
If it is required to perform a rapid sounding cycle on all channels instead
of, or in addition to, the automatic sounding cycle, the Immediate
Sounding procedure can be used.
Optional Handshake/Call Reject
The “optional handshake” is programmable. If selected, each time a
sounding transmission is completed, the radio will listen for two
seconds. If a call is received on the same channel, the radio will
respond and establish a link.