[xphos]

Here I was thinking I'd see old AT commands for controlling radios. Learned something new

[sitzkrieg]

theyre not old and still used in many many cell modems :-)

[xbar]

Yup.

Bluesky's name collision was pretty avoidable here but I guess they thought the obvious name was BS.

[dunham]

I believe that's still used in phones for communication between the computer and the cell phone hardware.

[thesuperbigfrog]

ATDT <My Favorite BBS>

. . .

ATH

[slyrus]

Same. ATS11=43 was magic back in the day.