David Wardle, Editor / Informer Technologies, Inc. / January 23, 2013
These programs will help you send SMS messages from your computer using a GSP modem connected to the computer via a USB port. Some of them support other types of GSM modems, such as the ones connected via infrared, serial ports, or even Bluetooth.
These programs can help you with what you're intending to do:
PC SMS Bulk Sender is a helpful and versatile software application that allows you to send and receive bulk text messages (SMS) with the help of a GSM or UMTS device (e.g., a phone or modem) which needs to be connected to your PC through any of the available interfaces, like USB, infrared, Bluetooth, or a serial port.
SMS-Maker is a program that can send and receive SMS messages from your desktop, by connecting a cellphone or GSM modem through the computer´s USB port, or the serial or infrared connections. It is compatible with any cellphone or GSM modem that accepts AT commands, such as: Siemens, BenQ EF 81, Nokia, Ericson, Falcom and others.
With Ozeki SMS Client you can send SMS messages. Also, you can compose your message in it and send this composed message to cellphones of predefined recipients. The messages are sent to the mobile network via Ozeki NG SMS Gateway that forwards messages either with GSM modem connection or IP SMS connection.
Support variety brands of mobile phones and devices such as Nokia, Siemens, Sony-Ericsson, Motorola and Alcatel, as well as GSM/GPRS modems such as Wavecom, Siemens, Sony-Ericsson and Motorola. Support several communication interfaces such as USB, Serial Port, Infrared and Bluetooth. Support several communication protocols: AT Command, Nokia FBus and Nokia MBus.