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ATH Hang Up
The H command forces the modem to hang up.
The H0 command (Hang up) is used to terminate a call.
The H1 command (Go off- hook) can be used to make your modem appear as busy to a remote
modem trying to dial in.
When you issue the H1 command, the modem goes off-hook but will not generate carrier or
answer tones.
The H2 command causes the modem to go off-hook after the current connection terminates. This
is used to take a modem out of service without interrupting the current connection.
Options
ATH0 Hang up
ATH1 Go off-hook
ATH2 Go off-hook after current connection terminates
Range
0-2