Is it Comm port 5.
Also check Modem doco for init strings etc

>I found GSM modems but strange behavior is present. Comm port is 5
>
> oComm = CREATEOBJ('MsCOMMLib.Mscomm')
> oComm.CommPort = 5
> oComm.PortOpen = .T.
> oComm.settings = "9600,N,8,1"
> oComm.inputLen = 0
>
>on command
>
> oComm.Output = "AT" + Chr(13) + Chr(10)
>
>error appear Ole IDispatch exception code 0 from MSComm: Operation valid only when the port is open.
>
>What am I doing wrong? Port is open or not?
>Simple thing can be terrific.