With IPHost Network Monitor you can run simple snmp requests against a Avaya device in your network.
genLoadNumberOfSession
gen Load Number Of Session
1.3.6.1.4.1.52.4.53.1.1
The number of operational sessions in progress in this system
Back to LOAD-MIB MIB page.
IPHost Network monitor allows you to monitor genLoadNumberOfSession 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.