Send SMS using GSM modem in VB.NET | How to Send a SMS Message in VB.NET| Visual Studio 2019



Please Don’t Skip the Ad’s Tips nyo na sakin pang donations. Salamat Today we will discuss a very important topic, sending SMS alerts to a mobile phone that is a common demand of most clients. In that software we used a GSM Modem to send a SMS thanks to the donor. So we developed a small application that runs on the server and sends a SMS whenever a new record is inserted into the database from any client.
In this application we will use the following:

The AT commands for both, GSM module and the mobile phone, are listed below. Some of these commands may not be supported by all the GSM modules available. Also there might be some commands which won’t be supported by some mobile handsets.

SMS Text mode :
Command
Description
AT+CSMS
Select message service
AT+CPMS
Preferred message storage
AT+CMGF
Message format
AT+CSCA
Service centre address
AT+CSMP
Set text mode parameters
AT+CSDH
Show text mode parameters
AT+CSCB
Select cell broadcast message types
AT+CSAS
Save settings
AT+CRES
Restore settings
AT+CNMI
New message indications to TE
AT+CMGL
List messages
AT+CMGR
Read message
AT+CMGS
Send message
AT+CMSS
Send message from storage
AT+CMGW
Write message to memory
AT+CMGD
Delete message

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