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Total Recall VR LinX Edge
4.7.
RoIP Networks
Total Recall VR is capable of recording audio carried in standard RTP and proprietary
protocols (such as Tait VRP) that are extensively used by RoIP and AoIP system in
passive and active mode.
In passive mode Total Recall VR uses a software based RTP packet collector which is
capable of detecting, extracting and then processing RTP packets when connected to an
Ethernet link.
The packet collector does not interact with the packets on the Ethernet link in any way.
It does not add, remove or modify packets. It simply detects and takes a copy of each
packet for further processing.
Ethernet switch SPAN port (or port mirroring as it is otherwise known) is by far the
cheapest and easiest way to connect a Total Recall VR to a RoIP network for the
purpose of recording. Even if your current Ethernet switch does not support it, myriad
other switches, which cost few hundred dollars only, do support it.
Figure 2: SPAN Port for RoIP Recording
In active mode Total Recall VR accepts RTP and Tait VRP packets on user configurable
UDP ports, also known as UDP services. RoIP equipment can send RTP and VRP
packets to the UDP services for the purpose of recording.
This interface receives RTP and VRP packets only. It does not send packets to the
network.
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