With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
dspuPuOperDlcPort
Cisco DSPU Pu Operation Dlc Port
1.3.6.1.4.1.9.9.24.1.4.2.1.16
DLC port used by the dspuNode for link activation with the remote PU.
Back to CISCO-DSPU-MIB MIB page.
IPHost Network monitor allows you to monitor dspuPuOperDlcPort on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.