Management Network - NEC IPASOLINK 400 Installation And Provisioning

While aligning the antenna at one end, the other end antenna must not be moved. After the main lobe has
been found at one end the other end is aligned. Finally the correct level is verified at both ends.
The alignment is correct when there are two lower side lobes next to maximum both in the elevation and in
the azimuth direction.
HOP ATTENUATION VERIFICATION
Under Metering -> Current Metering the received level is indicated in dBm as well as the current transmit
power in dBm.
 Verify that the difference between the remote transmit power and the local received level is the
same as in the hop calculation. The difference (hop attenuation) should be correct within a few dB
(+-2 dB).
If the hop attenuation is not correct within the tolerance, check first the weather conditions. During rain
(typically >10 GHz) or clear air multipath fading (typically < 13 GHz and long hop > 20 km) the attenuation
may be temporarily very high and unstable. If the temporary weather is not the reason any permanent
cause (obstacle, reflection, antenna misalignment) has to be removed. Consult with the hop planner. Too
high hop attenuation means that the fade margin is not as good as planned and the availability and error
performance targets will not be met.
 Restore the correct settings if they were changed for the alignment.
 Reset the PMON counters and clear the event logs. Maintenance Control/PMON/RMON FDB Clear
and Equipment Utility/Log Clear Function.

MANAGEMENT NETWORK

The management system for NEC Pasolink/iPasolink called PNMSj. Alternatively the more generic MS5000
can be used. The DCN is based on Ethernet/IP/TCP/UDP/SNMP.
Each cluster of radio links is usually connected to the NMS DCN at one IDU (the root element).
The root element is connected to the DCN using the NMS port or using a VLAN in the traffic port (in-band
connection).
The other elements are connected to the root element or other element over-the-air or using NMS/NE1 to
NMS/NE1 Ethernet cabling between two IDUs at the same site.
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