With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
sonetMediumLineType
sonet Medium Line Type
1.3.6.1.2.1.10.39.1.1.1.1.5
This variable describes the line type for this interface. The line types are Short and Long Range Single Mode fiber or Multi-Mode fiber interfaces, and coax and UTP for electrical interfaces. The value sonetOther should be used when the Line Type is not one of the listed values.
Back to SONET-MIB MIB page.
IPHost Network monitor allows you to monitor sonetMediumLineType 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.