Adding callout program to MiniCom

[RCourtney]

My Bell System 212AR modem project will include the 801C Automatic Calling Unit.
No Hayes commands were invented yet.

Minicom software 2.9-4 (sudo apt-get install minicom) looks like a great starter app for using my modem.
Not much to look at in the source code (main.c).

I intend to add RS366 control to dial out. Alternative would be to inject a VoIP "invite" to make the connection.

Anyone else use either callin or callout?

 

[MrImprovement]

If the Hayes commands weren't invented yet, how did you control the modem?

Did it work "the same" as Hayes, where you could send commands to the modem with a prefixed AT or a guard time to differentiate between transmission and typing?

In that case, you might not need to do much, just set the initialization string to nothing (as well as the hangup string and any other strings sent at different times, etc.); then, just type the commands to the modem (well technically, to the 801C).

 

[RCourtney]

Back then two ways to make a modem callout. Pick up the associated telephone and manually dial the number. When the far end answered, press the red "DATA" button.
The other way was to use a 801C ACU by sending destination number's digits (nibbles) over a RS366 port.
The ACU listened for dialtone and for the far end to answer. A control line put the modem offhook.
UNIX understood how to callout. I need to modify LINUX to use that old method.