As integration was developed based on older version, I suggest you to test if it works with 3CX Phone System version 15.5.
Also, you could ask other partners. Might be they have customers using this version.
I've found an issue which I'm trying to find the best way to resolve.
An integrated proof of delivery system sends two pieces of data to the SERP API, in two separate calls - let's c...
There are some topics in this Q&A related to this question, but none of them is about Idle users - Concurrent or Named.
If timeout minutes are specified in Optional Features, then all idle users are...