With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cpmChannelIndex
cpm Channel Index
1.3.6.1.4.1.9.10.19.1.1.1.1.3
The channel index that distinguishes the DS0 timeslot of the DS1 port. The range of the channel index is based on the number of T1/E1 channels: 1-24(T1) and 1-31(E1).
Back to CISCO-POP-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cpmChannelIndex on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.