SMS modem hang

I've recently installed serverscheck and plan to use it to monitor my existing infrastructure. I'm not very familiar with the software and having a hard time finding information on the SMS/GSM modem feature. I've got the software installed on my server and GSm multitech modem connected, I can send a single SMS test message and then the modem does not appear to be released or reset for a new message. is there any way to configure modem settings or any guidance on how to configure? I replaced GFI network server monitor using same hardware. If I need to supply more details, please let me know.

This is the wrong forum category - this is for using our SMS Gateway; not a GSM modem. If you want to use a GSM modem with the Monitoring Software then you need to purchase a Premium edition license - https://premium.serverscheck.com/plans.asp