Go to Inventory-> Select IPSLA from three line menu ->Select VoIP -> Click on + (add symbol) at the top right corner
Enter a name for the monitor
Select the source router from the list of routers discovered in OpManager, and select the relevant interface.
Specify the destination router IP Address
Specify the Destination Router Display Name
Now click 'Save' to submit the details to the device. This will take a few seconds to configure. Refresh the page after few seconds to see the new monitor. The data will be collected every hour, from the time you have configured.