Asterisk - aststat, how to configure this ancient daemon?

Question

Asterisk

Good day to all.
When I got a job at the current place of work, ip telephony was twisted by an old asterisk (v2). Everything suited everyone, I updated the hardware in a timely manner, and did not know grief.
But at the beginning of this year thunder struck. The IP telephony provider ordered me to replace our server with a newer version.
I assembled a new Asterisk, configured it, everything seems to be ok. BUT. But. Our employees are used to working with phones according to this scheme. The call enters the queue, the girls have an incoming call in their browser, they click on "answer" and the call is forwarded to their phone.
The aststat snap-in was responsible for this. And I couldn't even find any information about this thing. Not like instructions.
The only manulchik dates back to 2013.
In general, here is my question. How do I set up the damn aststat? Or what are the analogues?