Chapter 13 – Specific AT Commands
Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 112
Mobile Equipment Event Reporting +CMER
Description: This command enables or disables sending of unsolicited result codes in the case of a key press.
Values: <keyp> (keypad)
0 No keypad event reporting.
1 Keypad event reportings are routed using unsolicited code: +CKEV: <key>, <press> only those
key pressings, which are not caused by +CKPD are indicated.
2 Keypad event reportings are routed using unsolicited code: +CKEV: <key>, <press> all key
pressings are indicated.
Note: As AT software does not manage the emulation of key press, the values 1 and 2 lead to the
same results.
<ind>
0 No indicator event reporting
1 Indicator event reporting using unsolicited result code. Only the indicator events not caused by
+CIND shall be indicated by the TA to the TE.
2 Indicator event reporting using unsolicited result code. All indicator events shall be directed
from TA to TE (DTE).
<key> Keyboard map is (5,5)
0 1 2 3 4
5 6 7 8 9
10 11 12 13 14
15 16 17 18 19
20 21 22 23 24
<press>
1 key press
0 key release
<indresp> Indicator order number (as specified for +CIND)
<value> New value of the indicator
Syntax: Command Syntax: AT+CMER=<mode>,<keyp>,<disp>,<ind>,<bfr>
Response Syntax: +CKEV: <key>, <press> (key press event report)
Response Syntax: +CIEV: <indresp>, <value> (indicator event report)
Command Possible responses
AT+CMER=1
Note: Ask for key press event report OK
+CKEV:12,1
+CKEV:12,0
Note: Key 12 has been pressed and released
AT+CMER? +CMER: 3,1,0,0,0
OK