FreePBX displaying server IP instead of identifying calls

Good afternoon, I would like some help with the following case:

I have 3 telephone lines installed on an AEX410 FXO board, configured as follows:

3 trunks, one for each line, 3 entry routes and 3 exit routes and 15 extensions, these extensions make internal and external connections.

I created an IVR menu with 3 options, and everything has worked correctly, however, when we receive external calls, the caller’s number is not identified, instead the server’s IP is displayed.

I have already added several dialing formats and even purchased the caller ID management module, but nothing has worked so far.

Has anyone ever gone through something similar?
Thanks in advance

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