Clear-Com VOICE2 - Manual (Page 55)

Vitec Group Communications
VoICE IP Interface User Manual 3 - 1 5
When adaptive threshold is used, every 400 ms, steps 1-3 are done
and if the current signal average is below the threshold, the threshold
is decreased by one. Otherwise it is increased by 1.
DATA TAB
The Data tab configures the four serial ports connected to panels or
matrices.
Figure 3-6: Data Tab Screen