Multi-Tech Systems GPRS (MTMMC-G) User Manual

Chapter 9 – Short Messages Commands  

Multi-Tech Systems, Inc. Wireless GSM/GPRS AT Commands (Document Number S000293I) 

73 

 

Command Syntax: AT+CSMP=<fo>, <vp>, <pid>,<dcs> 

AT+CSMP? 
 
Note: current values 

+CSMP: 0,0,0,0 
OK 
Note: No validity period <dcs>= PCCP437 
alphabet (8 bits 

Æ 7 bits) 

AT+CMPS=17,23,64,244 
Note: <vp> = 23 (2 hours, relative format)  

<dcs> = GSM 8 bits alphabet  

Reminder: Enter <fo> value in decimal format 

OK 
Note: Command correct  

 

 

Description: 

This command deletes one or several messages from preferred message storage (“BM” SMS CB ‘RAM 
storage’, “SM” SMSPP storage ‘SIM storage’ or “SR” SMS Status-Report storage).

 

Refer to the Preferred Message Storage +CPMS command. 

• 

(1-20)   If the preferred message storage is “BM” 

• 

Sim dependent integer values (in the range of SIM location number) if the preferred 
message storage is “SM” or “SR”.    

If 

<DelFlag> is > 0, <index> is ignored.                                           

 

0 

Delete message at location <index>. 

 

1 

Delete All READ messages 

 

2 

Delete All READ and SENT messages 

 

3 

Delete All READ, SENT and UNSENT messages 

 

4 

Delete All messages. 

If 

<DelFlag> is omitted, default value is used. 

When the preferred message storage is “SR”, as SMS status reports are assumed to have a “READ” 
status, if <DelFlag> is greater than 0, all SMS status reports will be deleted. 

Syntax:   

Command Syntax:  AT+CMGD=<Index> [,<DelFalg>] 

 +CMTI:”SM”,3 

Note: New message received 

AT+CMGR=3 
Note: Read it 

+CMGR: “REC UNREAD”,”0146290800”, 
“98/10/01,18:19:20+00” <CR><LF> 
Message received! 
Note: Unread message received from 0146290800 on the 01/10/1998 at 18H19m 
20s 

AT+CMGD=3 
Note: Delete it 

OK 
Note: Message deleted 

AT+CMGD=1,0 OK 

Note: The message from the preferred message storage at the location 1 is deleted

AT+CMGD=1,1 OK 

Note: All READ messages from the preferred message storage are deleted 

AT+CMGD=1,2 OK 

Note: All READ messages and SENT mobile originated messages are deleted 

AT+CMGD=1,3 OK 

Note: All READ, SENT and UNSENT messages are deleted 

AT+CMGD=1,4 OK 

Note: All messages are deleted