With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdspLastAlarmCauseText
Cisco Digital Signal Processing Last Alarm Cause Text
1.3.6.1.4.1.9.9.86.1.2.1.1.4
The object indicates the failure reason for the current or last DSP Alarm. It should be used only for direct, human-readable display and only if a management station is unable to decode the value of cdspLastAlarmCause.
Back to CISCO-DSP-MGMT-MIB MIB page.
IPHost Network monitor allows you to monitor cdspLastAlarmCauseText 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.