With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
tokRingStationFrequencyErrors
tok Ring Station Frequency Errors
1.3.6.1.4.1.81.13.4.1.1.11
The number of times the interface has detected that the frequency of the incoming signal differs from the expected frequency by more than that specified by the IEEE 802.5 standard.
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IPHost Network monitor allows you to monitor tokRingStationFrequencyErrors on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya IP phones right now.