Insys GSM Small 11-02-01-03-02.001 Benutzerhandbuch

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7. Command Overview 

To ease readability of the further comments, <CR>  is always used as carriage return 
character. The standard responses are always OK or ERROR , regardless of the actually 
selected responses according to V.25. 
 
After the response to a command, a waiting period of at least 100 ms is recommended 
before the next command to enable the sending of more non-synchronous event codes, 
if necessary. 
 
For lining up standard AT commands please refer to the detailed command set of the 
GSM engine. 
 

The AT commands comprise the specification according to V.25ter, GSM 07.07 and GSM 
07.05. Only the most important AT commands with syntax and parameters are described 
in the following. A complete command reference of the Siemens TC35i is available from 
INSYS MICRO-ELECTRONICS (e-mail: insys@insys-tec.de). 
The applicability of single features may depend on the functionality of the selected GSM 
network. 
Syntax: 

 in angular brackets stand for parameters.  

 

 in square brackets stand for optional entries.

 

 

Default settings are set off in bold. 

+++ 

Change from data mode to command mode (online command mode).  1 second 
pause before and after the entry, no <CR>. 

ATA 

Call acceptance (see also ATS0 for automatic call acceptance) 

ATD[<n>] 

Dialing the phone number <n>. 

ATDL  

Last number re-dialing 

ATE<n> 

Set command echo:  

 0 

 Off 

 

ATH 

Terminate existing connection  

ATI 

Output of product information of the GSM engine 

ATO 

Switch back from command mode to data mode 

 

 

Version  1.00 / 09.04