Tom, we had this all out last October in the following thread:
You posted to it, you knew perfectly well that OSS EPM was forked from the Bill S code and updated for php8, you just must have forgotten.
At the end of that thread, I posted instructions for loading OSS Endpoint manager into FreePBX 17.
I’ll have to look into that FreePBX security warning and see if it applies.
I will also stress this again: chan_sip currently lives here:
From it’s README file:
This version of chan_sip is primarily maintained by a community Asterisk developer
The usecallmanager patch is maintained by a DIFFERENT developer who includes the chan_sip patch in his callmanager patch - likely to prevent the first developer from modifying the fork of chan_sip to the point it’s not usable anymore by the usecallmanager patch. Although, to my knowledge that has not been done by the first developer.
I don’t know why the 2 developers don’t seem to cooperate more closely but as the saying goes not my circus not my monkeys. But whether or not they cooperate I’m sure both of them would respond to offers of money - which is as I keep pointing out, the difference between “FOSS support” and “real” support.