Insys GPRS 5.0 serial 11-02-01-03-10.014 Manuale Utente

Overview AT Commands 

 

INSYS GPRS 5.0 serial 

 

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Most of the INSYS communication devices are controlled internally via AT commands. A 
terminal program is integrated in the HSComm. The AT commands can be directly en-
tered at the menu item “Terminal”. 
 

 

 
Alternatively, we recommend the terminal program Tera Term by T. T. Teranishi. The free 
software can be downloaded at 
http://www.vector.co.jp/authors/VA002416/teraterm.html. 
Each AT command starts with the letters AT and ends with a “Carriage Return” (CR). 
Capital and small letters will both be accepted, but the leading characters must be either 
‘AT’ or ‘at’. The command line is evaluated after the modem receives a Return com-
mand. In the description, a parameter with the letter “n” means that it can have various 
values. 
For example ATC<n>, where “n” can have the value 0 or 1, e.g. ATC1 (DCD always on). 
For commands which expect a parameter but don't have a parameter, the modem will 
automatically assume the parameter 0. For example, the commands AT&D and AT&D0 
will have the same effect. 
The commands are acknowledged with “OK” or “ERROR”.  A command that is being ed-
ited will be interrupted by any further incoming character. Therefore, the next command 
must wait for acknowledgement to avoid the deletion of the current command. 
The standard AT commands can be entered locally via the serial interface if the device is 
in offline state. In the online command mode, only the commands ATH and ATO are 
available. 
The extended INSYS AT** commands can be entered locally as well as remote (remote 
configuration) and in most cases also via SMS. The configuration via SMS is restricted to 
commands with responses of up to 140 characters. 

  Lining up several commands per input line is usually not possible. Further com-