Tait TM8100 Guide De L'utilisateur page 27

Voting
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A group of channels carrying the same traffic can be grouped
together in a voting group. When you press the function key
assigned to voting or scroll to the voting group ID, the best
communication channel is always selected for you to use.
Nuisance delete
If you wish to delete one of the channels from the voting
group, you can use the function key assigned to nuisance
delete to temporarily delete it from the voting group.
20 Basic operation