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This article was reproduced from: http://blog.csdn.net/hanmengaidudu/article/details/17099749I. Send text message in text formatSend text text message to Unicom:~: Microcom-s 115200/DEV/TTYUSB1AtOkSet the SMS format to text mode:At+cmgf=1OkAt+cmgs= "+861300711****"Enter what is sent:> Hello (press CTRL + Z to send after content is finished)+cmgs:48OkSMS Text Format for telecom:~: Microcom-s 115200/DEV/TTYUS

blink.Four, the process example:If the kernel adds a serial port driver execute the following command, you will see the serial device:[[email protected]/]# ls dev/TD2 null tty3 ttyS0mtd2ro pcmc0d0c tty30 ttyS1mtd3 pcmc0d0p tty31 ttyS2[[email protected]/]# microcom-s 115200/dev/ttys1 (microcom command production and file system BusyBox will be added, here the/dev/ttys1 need to be based on your GPRS connecti

1 microcom-s 9600/dev/ttyusb2 (/dev/ttyusb2 cannot be an error) 2 At (check whether OK output exists) 3 At + CREG? (0, 1 indicates that the GSM network is successfully registered) 4 At + CSQ? (Xx.99: XX indicates signal quality) 5 At + zvocch = 1 (0 represents the PCM Digital Voice Channel, and 1 represents the analog voice channel) 6 atdxxxxxxxxxxx; (xxxxxxxxxxxxx indicates the telephone number, which must be added after the phone number ;) 7.

This article was reproduced from: http://blog.csdn.net/hanmengaidudu/article/details/17099755First, use the text view modeThe following "Hair" refers to the command I knocked, "collect" refers to the information displayed after carriage return including other received information.~: Microcom-s 115200/DEV/TTYUSB1Hair: atReceived: OKSet into text mode read:Hair: at+cmgf=1Received: OKSave the information in the SIM card:Hair: at+cpms= "sm", "SM", "SM"Rec

again.Sleep 12 #€| ... ET 2sElseSleep 5 'FiElseSleep 120 #)FiDoneWith this script, you can rest assured that the Internet.Some people also want to get the signal strength of dial-up internet in real time. There are 2 ways to do this.1, through Microcom-s 115200/dev/ttyusb0 this way to use Ctrl+x to quit!Input AT+CSQAt+csq+csq:11,99OkYou can see that the signal strength is 11.2, can also write a program, through the ttyUSB2 to send the AT+CSQ command,

correction technology is introduced with the adoption of the compression technology. . After compression and decompression are added to the modem, it becomes sensitive to the line transmission error code. A small transmission error in the line may cause a long string of data errors during decompression.Microcom is a pioneer in the use of error correction and compression technologies.Microcom error correction and compression protocols are often abbreviated as MNP (