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AT Commands Reference
The following table shows the + CGMM string parameters.
4.2.1.3 +CGMR, +GMR, +FMR, Request Revision
These commands request the revision identification. The g20 outputs a string containing the revision identification information
of the software version contained within the device. Typically, the version is a quoted string with less than 255 characters.
Example
AT+CGMR
+CGMR: "G208_G_0C.00.0BD"
AT+GMR
+GMR: "G208_G_0C.00.0BD"
AT+FMR
+FMR: "G208_G_0C.00.0BD"
Table 6. +CGMM String Parameters
String Description
"GSM900" GSM at 900 MHz
"GSM1800" GSM at 1800 MHz
"GSM1900" GSM at 1900 MHz (North American PCS)
"GSM850" GSM at 850 MHz
Command Response/Action
AT+CGMR
AT+CGMR?
+CGMR: <revision>
AT+GMR
AT+GMR?
+GMR: <revision>
AT+FMR
AT+FMR?
+FMR: <revision>