Problems with SMS via GSM modem

Hi,

I have 30 days trial version of OpManager 10100 on Windows 2008 r2 (64 bit). And I'd like to send sms notification. So I connected gsm modem hsdpa and OpManager detected it as HSPAUSBModem, model 33. So now in SMS server settings I have

Modem Manufacturer	:	HSPAUSBModem
Modem Model	:	33
Battery Status	:	100%
Signal Status	:	52%
Status	:	Connected

When I added sms profile and tested it I got the message that sms was sent successfully but no sms was received. Even when I unpluged the modem and tested the sms notification I got the same message that sms was sent successfully but how if there was no modem pluged in.

So what can be the problem? OpManager detects the modem. All settings such as com port number and phone number are correct. Modem answers the AT commands which I send from putty.

Thank you for your help.