How to send AT commands using to USB modem on Ubuntu

Question

like this command: *342*55*225*5#

I installed Ubuntu and minicom on it. I tried to follow the guide written in this article, but I was blocked because when I entered AT and clicked enter, it did not respond...

On python I was following up a method but when I entered this command

comport = serial.Serial('ttyUSB4')

I got this error :

self.fd = os.open(self.portstr, os.O_RDWR|os.O_NOCTTY|os.O_NONBLOCK)
OSError: [Errno 2] No such file or directory: 'ttyUSB4'

score 0 · Accepted Answer · answered Feb 05 '16 at 16:56

0

Try to provide full path to device:

comport = serial.Serial('/dev/ttyUSB4')

But prefer udev paths, they will not change if you plug in devices in other order:

comport = serial.Serial('/dev/serial/by-id/<nameofyourdevice>')

answered Feb 05 '16 at 16:56

Arpegius

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thank you this worked , now how could I dial this : *436*1*2*68504759#? – akram dahab Feb 05 '16 at 17:25
1

@akramdahab So, if it worked, please accept my answer (click on the green tick). – Arpegius Feb 05 '16 at 17:33
could you help on how to dial this kind of codes : *436*1*2*68504759# – akram dahab Feb 05 '16 at 17:45
@akramdahab There is special AT command ("AT+CUSD") http://stackoverflow.com/questions/15850819/at-command-ussd – Arpegius Feb 05 '16 at 18:31

How to send AT commands using to USB modem on Ubuntu

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