I have the same problem. This process is taking up almost half a core, for 2 days now.
I removed Sangoma Property Manager and Wake Up Calls, they were not needed anyway.
If i kill the process, it won’t come back until i reboot the system.
Indeed, if you don’t ues PMS module, then no need keep this module here.
I don’t know what’s the PMS version used here but however, this issue doesn’t exist any more in the last version.