Product information and planning
MPR-e 157
• IDU-ODU Connection Failure
• ICP alarm
• Incompatible Shifter alarm
• Incompatible Frequency alarm
• Incompatible Power alarm
• Incompatible Modulation Parameters alarm
• Mated MPT Access card Failure
• Inter-MPT coupling link failure. Where there is a cross configuration (EPS on Spare
& TPS on main), HSB (TPS) will switch and align with EPS position, if there is an
inter-MPT coupling link failure.
Link identifier
The number of microwave links, especially in urban areas, might cause interference during
installation and the turn-up phase.
The digital frame incorporates link identity coding capabilities to prevent the capture of an
unwanted signal.
If a “Link Identifier Mismatch” occurs all traffic is dropped.
The Link identifier management function can be enabled or disabled by the management
system.
Loopbacks
To facilitate installation/commissioning and remote maintenance, two loopbacks are
available.
As the activation of a loopback affects traffic, the presence of a loopback is indicated to the
management systems as an abnormal condition.
The supported loopbacks are shown in Figure 55.
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