With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cmManagedLineInfoGroupRev2
cm Managed Line Info Group Rev2
1.3.6.1.4.1.9.9.47.3.2.12
A collection of objects providing modem configuration and statistics information for individual managed modems.
Back to CISCO-MODEM-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cmManagedLineInfoGroupRev2 on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.