How many devices should an asterisk hold?

Question

Asterisk

There is an incoming group with sales managers whose phone rings when a customer calls.
With an incoming call, there is a slogan, then the phones of all managers begin to ring. And between these 2 stages there was a pause, sometimes reaching up to 20 seconds. At this time, the client hears silence on the phone, and the phones of managers do not ring.
The outsourcing company that maintains Aster says that the problem is in polling the status of devices. Now there are 30 of them in the group
. Can you tell me if it's normal that there are problems on such a number of devices?
Asterisk Version: 11.25.3
FreePBX 13.0.195.26

Answer 1

No, it's not normal, and you mean a status poll? they are all registered, with an incoming call the client is transferred to IVR and if he did not dial anything, his call goes into the ring for the group of managers (300) for all managers with numbers 301-308 the phone starts ringing.
ask them for a specific output of sip logs. just don't forget to erase the numbers

Answer 2

We have freepbx, 250 managers, a lot of groups. PBX on a virtual machine. There are no such problems.
What you wrote is an accident.