If you select SMS, you have to fill out the following fields:
SMS Server Host - enter SMS server host (for example, smsserver.com);
SMS Server Port – enter SMS server port (2000 on the sample picture);
From Contact Number – enter the phone number which will be displayed as a number from which the SMS was sent.
Address Range is defined by SMS provider.
System ID and System Password – information of user registered by provider.
Click “OK” to save the settings of SMS communication.
Note: SharePoint Server needs Internet connection for sending SMS Alerts. Local connection is not enough for successful operation.