Specifications

Chapter 7 – Short Messages Commands
Multi-Tech Systems, Inc. CDMA AT Commands Reference Guide (PN S000294K) 49
Message Overwriting +WMGO
Description: The +CMGW command writes an SMS to the first location available. To write an SMS to a specified location,
the +WMGO command forces the product to write an SMS (with the +CMGW command) to the location
specified with +WMGO, but for just one +CMGW command.
Values: <loc> Location number of the record to write or overwrite
Syntax: Command syntax: AT+WMGO= <loc>
Command Possible Responses
AT+WMGO=0 OK
Note: Next MSG write will be to index 0
AT+WMGO=30 +CMS ERROR: 302
Note: Invalid index (out of range)
On the next AT+CMGW command, the record number used will be the one specified by the AT+WMGO
command. The location is forgotten and, in order to perform a second overwrite, +WMGO has to be used
again.
If the external application specifies a free location, and if an incoming message is received before the
AT+CMGW command, the product may store the incoming message at a location available. This could be
the one specified by +WMGO (the product does not prevent from this). If the user then issues an
AT+CMGW command without changing the AT+WMGO location, the new message will be overwritten!
Note: that this location number is not kept over a software reset.
Change SMS Status +WUSS
Description: The +WUSS command enables or disables a change of the SMS message status following a +CMGR or
+CMGL command.
Values: <mode>
0 The SMS Status will change.
1 The SMS Status will not change.
Syntax: Command syntax: AT+WUSS = <mode>
Command Possible Responses
AT+WUSS=1 OK
AT+WUSS=0 OK
Note: If lower layer failure, +CMS ERROR: 513