With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
ctpHDMIPeripheralStatusTable
ctp HDMI Peripheral Status Table
1.3.6.1.4.1.9.9.643.1.2.3
The table contains information about all peripherals connected to the system via HDMI.
Back to CISCO-TELEPRESENCE-MIB MIB page.
IPHost Network monitor allows you to monitor ctpHDMIPeripheralStatusTable on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco wireless switches right now.