NK8000 Application examples
57
Siemens Building Technologies
DMS8000_Application_Specification_&_Planning_MP4.10_A6V10063710_a_en
Fire & Security Products
06.2007
4.3
Wide area extension systems
Examples for wide area extension systems are:
–
Metros
–
Pipelines
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Banks with a network of branch offices
–
Telecom providers
The following figure shows a typical geographical network configuration. The head-
quarters is equipped with several subsystems connected to an NK8223 / NK8225
Ethernet Port. The branches where a single fire or security subsystem needs to be
centralised, are equipped with NK8222 Ethernet Ports for a single subsystem. The
NK822x are connected via the LAN or WAN to the remote management station(s).
Additionally, dial-ups are available via modem as backup connectivity in case the net-
work is down.
Fig. 31
Example of a wide area expansion system