With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cnsInpSrcSignalFailure
cns Inp Src Signal Failure
1.3.6.1.4.1.9.9.761.1.1.3.1.15
This object indicates whether or not a signal failure event is currently being reported on the input clock source.
Back to CISCO-NETSYNC-MIB MIB page.
IPHost Network monitor allows you to monitor cnsInpSrcSignalFailure on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco routers right now.