With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppTypeHisASNLNotifReceived
Cisco Call Applications Application Type History ASNL Notification Received
1.3.6.1.4.1.9.9.146.1.2.2.1.74
Total number of ASNL subscriptions received by this application type.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppTypeHisASNLNotifReceived on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco firewalls right now.