Specifications

SIM900 AT Command Manual
39 (server congestion)
40 (local data rejection)
48 (failed replace PDP context)
66 (MM network cause) See [24.008]
67 (CC network cause) See [24.008]
69 (RP cause) See [24.008]
71 (SIM cause) 0 (Unknown problem)
1 (Memory problem)
2 (File Id not found)
6 (Increase problem)
7 (Technical problem)
11 (Command not allowed)
15 (SIM card out)
73 (SM cause) See [24.008]
Reference
GSM 07.07 [13]
Note
3.2.8 AT+CGMI Request Manufacturer Identification
AT+CGMI Request Manufacturer Identification
Test Command
AT+CGMI=?
Response
OK
Response
TA returns manufacturer identification text.
<manufacturer>
OK
Execution
Command
AT+CGMI
Parameter
<manufacturer> the ID of manufacturer
Reference
GSM 07.07 [13]
Note
3.2.9 AT+CGMM Request Model Identification
AT+CGMM Request Model Identification
Test Command Response
SIM900_AT Command Manual_V1.03 53 12/24/2010