With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cvaIfGeneralGroup
cva If General Group
1.3.6.1.4.1.9.9.62.3.2.1
The collection of objects providing general information about the Cisco Analog Voice interfaces.
Back to CISCO-VOICE-ANALOG-IF-MIB MIB page.
IPHost Network monitor allows you to monitor cvaIfGeneralGroup on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.