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ATL0 was a great command that muted the modem so that your parents couldn't hear that you were dialing up. :-)

Oh wow, now I feel old.




Wasn't ATH0+++ used to cause modem users to hangup via IRC CTCP requests? Good days.

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A popular multi-line BBS back in Colorado had one faulty modem and if you were to post that in chat the person on that line would get disconnected... good times, good times.

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It probably had a modem that didn't pay Hayes to license the patent on enforcing a delay in switching from data mode to command mode (+++ did that, and then ATH0 was the AT command to hang up the phone -- normally you'd have to wait a couple seconds, type +++, wait a couple more seconds, and then you'd get an OK and could type AT commands).

http://en.wikipedia.org/wiki/Time_Independent_Escape_Sequenc...

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