Controlling landline with a laptop?

I have a Sony laptop and it also has a connection for a fax modem. Can you also connect a landline telephone to the connection and, for example, if you enter a telephone number on the landline, it is displayed on the laptop and you can test the landline?

I don't really understand what you want

BUT I'll just say NO

You can't connect a telephone to the notebook via an RJ11 and then use it to make calls

Unless there are programs that could loop VoIP through to this phone, which I think is rather improbable

At times, if your notebook offers such a connection, then the notebook has a built-in modem and the connection is only used for this.

As far as I know. If someone should know something else, then out with it and I'll also learn something

Not directly. You can establish a connection between the telephone and the laptop if both are connected to a telephone system (different ports).

lg, anna

Telephone system, which can also be a larger Fritz box with several analog connections, e.g. The 7490 or something.