Specifications
SIM900 AT Command Manual       
SIM900_AT Command Manual_V1.03  38  12/24/2010 
2.2.35 AT+GMM Request TA Model Identification 
AT+GMM Request TA Model Identification 
Test Command 
AT+GMM=? 
Response 
OK 
TA reports one or more lines of information text which permit the user to 
identify the specific model of device. 
<model> 
OK 
Execution 
Command 
AT+GMM 
Parameter 
<model> product model identification text 
Reference 
V.25ter 
Note 
2.2.36 AT+GMR Request TA Revision Identification of Software Release 
AT+GMR Request TA Revision Identification of Software Release 
Test Command 
AT+GMR=? 
Response 
OK 
TA reports one or more lines of information text which permit the user to 
identify the revision of software release. 
Revision: <revision> 
OK 
Execution 
Command 
AT+GMR 
Parameter 
<revision> Revision of software release 
Reference 
V.25ter 
Note 
2.2.37 AT+GOI Request Global Object Identification 
AT+GOI Request Global Object Identification 
Test Command 
AT+GOI=? 
Response 
OK 
Execution 
Command 
AT+GOI 
Response 
TA reports one or more lines of information text which permit the user to 
identify the device, based on the ISO system for registering unique object 
identifiers. 
<Object Id> 










