Smart Machine Smart Decision 
SIM7500_SIM7600 Series_AT Command Manual_V1.07       2017-12-25 
Defined values 
<time> 
String type value; format is “yy/MM/dd,hh:mm:ss±zz”
, where characters indicate year (two last 
digits), month, day, hour, minutes, seconds and time zone (indicates the difference, expressed in 
quarters of an hour, betw
een the local time and GMT; three last digits are mandatory, range 
-47…+48). E.g. 6
th
 of May 2008, 14:28:10 GMT+8 equals to “08/05/06,14:28:10+32”. 
NOTE: 1. Time zone is nonvolatile, and the factory value is invalid time zone. 
   2. Command +CCLK? will 
return time zone when time zone is valid, and if time zone is 
00, command +CCLK? will return “+00”, but not “-00”. 
Examples 
AT+CCLK=“08/11/28,12:30:33+32” 
OK 
+CCLK: “08/11/28,12:30:35+32” 
AT+CCLK=“08/11/26,10:15:00” 
OK 
+CCLK: “08/11/26,10:15:02+32” 
OK 
 
4.18    AT+CMEE    Report mobile equipment error 
Description 
This  command  is used to disable or enable the use of result code “+CME ERROR: <err>” or 
“+CMS ERROR: <err>”  as an indication of an error relating to the functionality of ME;  when 
enabled, the format of <err> can be set to numeric or verbose string. 
SIM PIN  References 
NO  3GPP TS 27.007 
Syntax 
Test Command  Responses 
+CMEE: (list of supported <n>s) 
OK 
Read Command  Responses 
AT+CMEE?  +CMEE: <n> 
OK