With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
cdmsNumUsers
Cisco Digital Media Management System Number Users
1.3.6.1.4.1.9.9.655.1.7.1
The number of users who have access to this installation of DMS.
Back to CISCO-DIGITAL-MEDIA-SYSTEMS-MIB. MIB page.
IPHost Network monitor allows you to monitor cdmsNumUsers on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco switches right now.
