What do "+CME ERROR:512" or "+CME ERROR:514&q


When the short message is send with the command “AT+CMGS”,the response “+CME ERROR:512” or “+CME ERROR:514” are received.What do they mean?


Codes are described in the document Appendixes to AT Commands Interface Guide - see the chapter Codes and values


I have seen it. But I dont’n know what the “CP” and “MM” stand for.


See the FAQ:

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