IMC Networks IE-iMcV-VDSL2-LANextender, Инструкции по эксплуатации

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Troubleshooting
The most common failure of a VDSL line is its slow degradation over time due to
aging of the line or increased line noise as additional service is added to the same
Line bundle. To help detect this degradation over time, the unit provides a user-
defined Minimum Quality Level. Once this level is reached, the unit will send an
SNMP TRAP indication for low line quality. This can be used to provide an advanced
notice to the customer of a potential problem BEFORE a loss of service is detected by
the customer.