Quectel EC25 Command Manual page 121

Maximum Response Time
Reference
3GPP TS 27.005
Parameter
<mem1> Messages to be read and deleted from this memory storage
"SM"
"ME"
"MT"
<mem2> Messages will be written and sent to this memory storage
"SM"
"ME"
"MT"
<mem3> Received messages will be placed in this memory storage if routing to PC is not set
(AT+CNMI)
"SM"
"ME"
"MT"
<usedx> Integer type. Number of current messages in <memx>
<totalx> Integer type. Total number of messages which can be stored in <memx>
Example
AT+CPMS?
+CPMS: "ME",0,255,"ME",0,255,"ME",0,255
OK
AT+CPMS="SM","SM","SM"
+CPMS: 0,50,0,50,0,50
OK
AT+CPMS?
+CPMS: "SM",0,50,"SM",0,50,"SM",0,50
OK
EC25&EC21_AT_Commands_Manual
If there is any error related to ME functionality:
+CMS ERROR: <err>
300ms
(U)SIM message storage
Mobile equipment message storage
Same as "ME" storage
(U)SIM message storage
Mobile equipment message storage
Same as "ME" storage
(U)SIM message storage
Mobile equipment message storage
Same as "ME" storage
//Query the current SMS message storage
//Set SMS message storage as "SM"
//Query the current SMS message storage
LTE Module Series
EC25&EC21 AT Commands Manual
120 / 231