Eric,
you might try using a dialer program to test if the modem is avalabe. We use the MarshallSoft DUN Dialer. www.marshallsoft.com It only cost about $55 and seems to work very well. I haven't tried this but I would guess that it should return an error trying to dial if the modem is already busy. There may be an easier way through a Windows API call but I haven't a clue on what it would be.
John.


>Hello,
>
>Problem with using Winfax and e-mail client.
>
>I made an application witch send documents to either Winfax or the mail client. The problem is that whenever de mail client is busy with sending e-mail connected via a modem WinFax generates an error 0x080010105. Proberly because it can't use the modem. I have looked for several ways to intercept this but i nothing what so ever.
>
>I use the silent mode for both Winfax and E-mail client (no windows).
>
>Is there a possibility to detect if the modem is busy?
>
>Please let me know.
>
>Thanks