Ping with embedded +++ATH worked too on some modems!
Of course you needed to have the nous to do this in the first place and a IRC server that showed users host names/ip adresses- I fear that I’m showing my age !
IIRC it worked against Microsoft WebTV set-top boxes. Some kids got in a lot of trouble by causing a bunch of them to hang up and dial 911 or something.
Of course you needed to have the nous to do this in the first place and a IRC server that showed users host names/ip adresses- I fear that I’m showing my age !