R&S 4200 Series - Voip Connections; Fig. 3.95 Voip Connections

R&S XU 4200 Audio via VoIP (Optional)
6166.5368.02.01 3.108
3.15.6 VoIP Connections
Introduction
This chapter gives an overview about the network-based communication
between VCS or the R&S GB4000V and the radio.
In transceivers each module (RX/TX) manages separated VoIP
connections. Each connection consists of two parts:
 Session related connections (SIP/SDP)
 Audio stream related connections (RTP/R2S)
The figure below shows that a VoIP connection to the radio always consists
of both a SIP/SDP and an RTP/R2S connection. VoIP connections need to
be established for each module. Therefore, a transceiver in VoIP operation
mode will always have at least one connection to the RX and one
connection to the TX module. Note that each module can have a maximum
of two concurrent SIP/RTP sessions.
Fig. 3.95 VoIP Connections.