With IPHost Network Monitor you can run simple snmp requests against a ADTRAN device in your network.
adFRPerformCurrentPvcState
Adtran Frame Perform Current Pvc State
1.3.6.1.4.1.664.4.1.2.1.1.3
Current state for this PVC.
Back to ADTRAN-FRPerform-MIB MIB page.
IPHost Network monitor allows you to monitor adFRPerformCurrentPvcState 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.