With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
prtInputDefaultIndex
Printer Input Default Index
1.3.6.1.2.1.43.5.1.1.6
The value of prtInputIndex corresponding to the default input sub-unit: that is, this object selects the default source of input media.
Back to Printer-MIB MIB page.
IPHost Network monitor allows you to monitor prtInputDefaultIndex 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.