56k zoom software modems for dialing #s

I am using 56k usb zoom modems for the purpose of dialing phone numbers, however after 30sec the modem starts squealing in the employees @clients ears, the software we are using does have a hang up button that stops the squealing however it is quite punishing if they forget to click it, is there AT commands i can use to automatically hang up the modem after dialing?
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Adam LeinssServer SpecialistCommented:
ATH should drop the call.
csePixelatedAuthor Commented:
I am more looking for a command that programs the modem for all future calls to hang up after dialing, I believe that "ATH" is the command the software sends to the modem when you hit the talk button.
csePixelatedAuthor Commented:
current initialization string is ATQ0V1E0X1... what can i change the initialization string to to hang up automatically after dialing is complete?
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Adam LeinssServer SpecialistCommented:
ATH Hook control

The modem is equipped with its own telephone line interface. Just as with a normal telephone, the modem can go off-hook, connecting the interface with the line, or on-hook to disconnect. This is controlled with the ATH command. The digit following the H defines the requested hook mode. The command returns "OK" if a valid parameter was supplied and "ERROR" otherwise.
H0 Go on-hook (disconnect)
H1 Go off-hook (connect)

csePixelatedAuthor Commented:
Installed the modem drivers for zoom 3095 fixed the squeaking think some modified commands may have been involved

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csePixelatedAuthor Commented:
In short, nothing worked until the official drivers were installed, The string I provided was correct.
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