This is a bit late, but it sounds as if the computer told the modem to disconnect, then to go off-hook again.<br><br>There's no predicting, or really analyzing, what a computer will do when subjected to a DoS attack. It depends on the nature of the attack, the operating system, and <b>exactly</b> what the computer was doing (which instruction the CPU was executing) at the moment the attack caused it to stop working properly.