With IPHost Network Monitor you can run simple snmp requests against a ADTRAN device in your network.
adUnitSchedResetTime
ad Unit Sched Reset Time
1.3.6.1.4.1.664.5.30.3.1.3
Date and Time of scheduled system reset.
Back to ADTRAN-ADUNIT-MIB MIB page.
IPHost Network monitor allows you to monitor adUnitSchedResetTime on ADTRAN device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring ADTRAN IP phones right now.