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modem option missing

I'm trying to follow this guide Connect your Mac to the internet using a dial-up modem but I can't find the option to add a modem on my Mac.


Maybe I'm looking in the wrong place? Where should I find the modem option?


Thanks a lot.


MacBook Air

Posted on Dec 17, 2020 3:25 AM

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Dec 17, 2020 5:06 AM in response to Barney-15E

Yes the modem is connected externally. I can open a terminal and type AT commands on /dev/tty.usbserial-1422410


However I need to set up ppp to transmit and receive data through the modem.


The documentation says there should be an option in interfaces called Modem but I can't find it.


Thanks a lot.

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Dec 17, 2020 4:42 PM in response to Barney-15E

It's a modem with an RS232 serial port. It's connected to the MacBook via a USB <-> RS232 converter and is recognised as a serial port. That's how modems have worked since 1962.


RS232 can be used for many things and MacOS should not automatically assume that any RS232 device connected to it is a modem. So it shouldn't recognize the device as such.


However according to the Apple documentation I should be able to add a Modem in the network configuration and then choose the serial port it's using. Except the option to add a Modem is missing on my MacBook.


I can't find anything about this being an optional add-on package to install but it should, according to Apple's documentation, be included in Catalina and also Big Sur (I can't upgrade yet because I need to use software that isn't compatible with Big Sur). The only other thing I could think of is that Apple silently removed support for serial modems and forgot to update the documentation.

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Dec 17, 2020 6:41 PM in response to XykonEQ2

Just because it is a modem doesn't mean the OS can identify it as such. It's a piece of hardware that provides some identification to the OS. If the OS doesn't know what it is (either because it is not in its list of valid devices or because they dropped support for modems altogether), it won't display it.

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modem option missing

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