With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dsx1TotalIndex
dsx1 Total Index
1.3.6.1.2.1.10.18.9.1.1
The index value which uniquely identifies the DS1 interface to which this entry is applicable. The interface identified by a particular value of this index is the same interface as identified by the same value as a dsx1LineIndex object instance.
Back to DS1-MIB MIB page.
IPHost Network monitor allows you to monitor dsx1TotalIndex 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.