With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
parSnNumberOfTrunks
par Sn Number Of Trunks
1.3.6.1.4.1.351.130.1.6
This object specifies the number of trunks attached to the node.
Back to CISCO-WAN-PAR-MIB MIB page.
IPHost Network monitor allows you to monitor parSnNumberOfTrunks on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco optical switches right now.