With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
clGroupClockRedundancy
cl Group Clock Redundancy
1.3.6.1.4.1.81.16.1.1.1.2
Value ON of this attribute defines a redundancy (backup) relationship between the internal and external clocks on the LCL100 module.
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IPHost Network monitor allows you to monitor clGroupClockRedundancy on Avaya device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Avaya routing switches right now.