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When using a public telephone line to monitor sites from a client PC (1:1)
VRF Explorer
Monitoring center
When simultaneously monitoring a single site from multiple client PCs (Max 5 client PCs)
Monitoring center A
Monitoring center B
Monitoring center C
Simultaneous monitoring by
up to 5 clients is possible
Note
When a network is not constantly connected between VRF Controller and VRF Explorer, connect and dis-
connect it manually at each use.
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VRF Explorer
VRF Explorer
VRF Explorer
137
Becomes 1:1 connection
for public telephone line
Transmission line
Site A
VRF Controller
Public telephone line
Transmission line
VRF Controller
LAN or Internet
Site A
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