With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parConnRemoteSlot
par Connection Remote Slot
1.3.6.1.4.1.351.130.3.1.1.9
This object specifies the slot number part of the remote endpoint connection address.
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parConnRemoteSlot 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.