With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ccapAppGblHisPSTNOutCallDiscUsrErr
Cisco Call Applications Application Global History PSTN Out Call Disconnected User Error
1.3.6.1.4.1.9.9.146.1.5.19
Total number of outgoing PSTN call legs that disconnected with 'user error' cause code. User error cause code could be 'no answer/busy/timeout'.
Back to CISCO-CALL-APPLICATION-MIB MIB page.
IPHost Network monitor allows you to monitor ccapAppGblHisPSTNOutCallDiscUsrErr 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.