Local Control (Local Mode)
R&S EU4200C
3.29
6174.8456.02-01
Fig. 3.9 Squelch behavior.
The following table shows the behavior of the audio interfaces (Analog,
VoIP, E1 and MMI) and of the SQ signaling (SQ relay, SQ bit in VoIP
protocol, SQ pattern in the E1 signalling timeslot and SQ LED on MMI)
depending on the status of the Noise suppression, on the RX input signal
and on the parameter “SQ Signalling logic”.
Noise
suppression
RX Input
SQ Signalling
logic
Audio
interfaces
SQ signaling
Activated
(SQ key ON)
RX Input > SQ thresholds
-
Not muted
Active
RX Input < SQ thresholds
-
Muted
Not active
Deactivated
(SQ key OFF)
RX Input > SQ thresholds
-
Not muted
Active
RX Input < SQ thresholds
R&S Type
(up to R11.05)
Not muted
Not active
RX Input < SQ thresholds
Standard
(from R11.1x)
Not muted
Active
Tab. 3.1
Squelch behavior.
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