ahsanjamal
asked on
AT Command set of all GSM modems is same or not?
I want to write wrapper classes for AT commands of GSM modems. These classes will be used by my application to connect to GSM modem and send receive SMS messages.
The question I have is that is the AT command set of all modem is same or it is different. Means that if I write these classes, can they be used with all GSM modems or I have to target one particular GSM modem.
Ahsan
The question I have is that is the AT command set of all modem is same or it is different. Means that if I write these classes, can they be used with all GSM modems or I have to target one particular GSM modem.
Ahsan
A list of AT commands has been specified as part of
the GSM standard. It's part 07.07 and you can get it
from www.etsi.org. The AT commands dealing with SMS
are specified in GSM 07.05.
Having said that, each phone vendor is free to add their
own custom AT commands. And there is sometimes a subtle
difference between the handling of standard AT commands
between different phone vendors. If you stick to
basic, standard features, you should be able to write
the software once and it will work with most phones.
the GSM standard. It's part 07.07 and you can get it
from www.etsi.org. The AT commands dealing with SMS
are specified in GSM 07.05.
Having said that, each phone vendor is free to add their
own custom AT commands. And there is sometimes a subtle
difference between the handling of standard AT commands
between different phone vendors. If you stick to
basic, standard features, you should be able to write
the software once and it will work with most phones.
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the GSM standard. It's part 07.07 and you can get it
from www.etsi.org. The AT commands dealing with SMS
are specified in GSM 07.05.
Having said that, each phone vendor is free to add their
own custom AT commands. And there is sometimes a subtle
difference between the handling of standard AT commands
between different phone vendors. If you stick to
basic, standard features, you should be able to write
the software once and it will work with most phones.