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Audio via VoIP (Optional)
R&S XU 4200
3.111
6166.5368.02.01
3.15.9 Parallel Operation of the Analog and VoIP Audio Interfaces
Introduction
Analog interface functionality remains unchanged when VoIP audio
interface is selected (see chapter 3.3).
TX Audio Basic
interface X5
Radio functionality related to TX Audio Basic interface X5 remains
unchanged when VoIP audio interface is selected. Transmitter can be
keyed via VoIP interface or using rear PTT input (connector X5.8/X5.9).
In-band PTT can be configured on X5 interface as well (see chapter 3.8
In-band Signaling).
Note:
Analog transmitting via X5 and via VoIP cannot work simultaneously.
Only one PTT and audio source is accepted at a time.
Note:
Analog Audio Basic Interface is always considered by the transmitter
as PTT-TYPE “Normal”. Analog audio transmission can be interrupted when
PTT-TYPE “Coupling”, “Priority”, or “Emergency” is coming over VoIP
interface.The PTT coming from the TX Audio Basic interface X5 towards the
VCS is indicated via the RTP Keep Alive with PTT-ID set to 63.
RX Audio Basic
interface X10
Radio functionality related to RX Audio Basic interface X10 remains
unchanged when VoIP audio interface is selected. Received demodulated
audio signal is available on Analog and VoIP interfaces in parallel.
Note:
When in-band signalling is enabled (SQ or RSSI, see chapter 3.8 In-
band Signaling), the tones are present only on RX Audio Basic interface
X10.
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