Rainbow Electronics FARGO MAESTRO 100 (with TCP_IP) - Manual (Page 133)

Wireless CPU ® Status Commands
Mobile Equipment Event Reporting +CMER
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WM_DEV_OAT_UGD_049 - 001 VOLUME 1 August 23, 2007
7.5 Mobile Equipment Event Reporting +CMER
7.5.1 Description
This Wavecom proprietary command enables or disables sending of unsolicited result
codes in the case of a key press.
7.5.2 Syntax
Action command
AT+CMER=[<mode>][,[<keyp>][,[<disp>][,[<ind>][,[<bfr>]]]]]
OK
Read command
AT+CMER?
+CMER: <mode>,<keyp>,<disp>,<ind>,<bfr>
OK
Test command
None
Unsolicited response
+CKEV: <key>,<press> (key press event report)
+CIEV: <indresp>,<value> (indicator event report)