How,send,and,receive,SMS,using computer How to send and receive SMS using computer and gsm modem
----------------------------------------------------------Permission is granted for the below article to forward,reprint, distribute, use for ezine, newsletter, website,offer as free bonus or part of a product for sale as longas no changes a Gone are those times when the companies and the organisations didn't need a hi-tech system to handle them. Owing to the considerable increase in the business sector and thus, an enormous increase in the complexity of the organisational struc
Short Message Service (SMS) or TXT messaging is a technology that enables users to send and receive text messages via mobile phones. Apart for personal usage, SMS can also be used for business purpose, such as sending products promotions to customers, receiving customers feedback, informing customers about upcoming events, and even more sophisticated tasks like hosting SMS survey or contest.In order to perform these business operations, there is a need to have a solution that supports sending/receiving of SMS via computers. Such a solution can be achieved by using a gsm modem that connect to the computer, and a relevant software that can communicate with the gsm modem.To communicate with the gsm modem, one would need to transmit standard AT commands via serial port. In this article, I will show the most basic AT commands required for sending and receiving of SMS in text mode.1. Set preferred message format (+CMGF)There are two message formats supported: text mode and PDU mode. In this article, I shall illustrate the easier text mode. To set the preferred message format as text mode:AT+CMGF=1Possible response from the gsm modem: OK2. Send SMS (+CMGS)To send an SMS in text mode:AT+CMGS=where is destination address, the recipients number you want to send your sms to is carriage return is the text message you want to send is the character 0x1A, or pressing Ctrl key and Z key togetherFor example, to send the message How are you? to the number 12345678, you key in:AT+CMGS=12345678The gsm modem will response with the character >. Then you key in your text:>How are you?The gsm modem will respond with the following if successful:+CMGS:OKis the message reference, which is a number from 0 to 255 returned by the gsm modem. This number begins with 0 and is incremented by one for each outgoing message.3. Receive SMS (+CMGR)When a new sms arrived, the gsm modem would send the following byte stream:AT+CMTI: SM,1To read the message, the computer/software needs to send the command:AT+CMGR=1The gsm modem will respond with something similar to the following:+CMGR: REC UNREAD,12345678, 08/10/01 18:20:35+00, How are you?OKThe first part is the command +CMGR, the second part is the status of the message (in this case it is UNREAD), the third portion is the senders mobile number, the forth portion is the base station time-stamp, followed by the the carriage return and line feed characters, the message content, and finally the OK terminating character.This article aims to provide an introductory guide to how to send/receive sms using computer. The AT commands and packing of PDU mode are much more complex and will not be discussed in this article.
How,send,and,receive,SMS,using