How to find inactive sip extensions?

Question

Asterisk

Good day, there are a lot of internal sip numbers, and their number hit the "ceiling", but that's not the point, this problem can be solved by converting my three-digit numbers to four-digit ones, at the moment there is no time to put some kind of voip monitor, by registration, watch this there will be far from reliable information, tell me with a solution, thank you in advance.

Answer 1

CEL or CDR are written? If so, make a selection on them for the required period in the `src` and `dst` fields.