Have you tried the mscomm control?


>Hi Tracy,
>I'm trying to think how to do that. I used to work with modems a lot long ago and I would just fopen() the com port and fputs() the 'ATZ', etc., can you do that these days? I'm thinking I might have to make an API call or use RAS or something.
>
>On another note, the recent weather up here, -10 to -15, while not unusual for this time of year, has me thinking fondly of NC winters!
>
>Gary
>
>
>>I think if you send 'ATDT'+CHR(13)to the modem you can check the response buffer for the string "NO DIALTONE" Usually you send an attention and init command to the modem first though. Typically it is: "ATQ0V1E1S0=0" + Chr(13) or "ATZ" + CHR(13) (reponds 'OK')
>>
>>
>>>I'm looking for a way to determine if a dial tone can be gotten from a modem. I have a modem hooked to a Windows server and sometimes the line goes down or the modem is unavailable for a variety of reasons and I'd like to programmatically know this, presumably by taking the modem off hook and detecting a dial tone or some other indication that the modem is turned on and able to get a dial tone.
>>>
>>>Anyone ever done this? Thanks in advance.
>>>
>>>Gary