With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
adsl2ScalarSCAvailInterfaces
ADSL2 Scalar Sub-Carriers Available Interfaces
1.3.6.1.2.1.10.238.1.6.1.2
This value determines the amount of space that is currently available in adsl2SCStatusTable. The number of entries available in adsl2SCStatusTable is equal to two times the value of this attribute.
Back to ADSL2-LINE-MIB MIB page.
IPHost Network monitor allows you to monitor adsl2ScalarSCAvailInterfaces 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.