CDR logs call every 15 seconds instead of total

Hi all,

I’m using asterisk & FreePBX in 3 locations. one of the PBX’s CDR module writes a active call in each 15 seconds.
So for each call i have 20-100 rows.
For example:

Why does it happen and how i can fix it?

Thanks in advance!

Is this Asterisk 12+?

Asterisk 13.2.0 built by mockbuild @
FreePBX 1.812.210.58-1