With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppInstHisPSTNInCallDiscSysErr
Cisco Call Applications Application Instance History PSTN In Call Disconnected Sys Error
1.3.6.1.4.1.9.9.146.1.3.3.1.12
Total number of incoming PSTN call legs that disconnected with 'system error' cause code. System error cause code could be any thing other than 'normal or user error'.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
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