Specifications

Chapter 12 – Short Message Service (SMS) Commands
Multi-Tech Systems, Inc. AT Commands for EDGE (E1) Modems (S000474A) 217
12.2 AT+CMGC Send an SMS Command
Syntax: Test Command: AT+CMGC=?
Response: OK
Write Command: If text mode (see AT+CMGF=1)
AT+CMGC=<fo>, <ct>[, <pid>[, <mn>[, <da>[, <toda>]]]]<CR> Text can be
entered <CTRL-Z>/<ESC>
Response: +CMGC: <mr>[, <scts>]
If sending fails
ERROR
+CMS ERROR: <err>
Write Command: If PDU mode (see AT+CMGF=0)
AT+CMGC=<length><CR> PDU can be entered <CTRL-Z>/<ESC>
Response: +CMGC: <mr>[, <ackpdu>]
OK
If sending fails
ERROR
+CMS ERROR: <err>
Notes:
• After invoking the commands AT+CMGW, AT+CMGS or AT+CMGC it is necessary to wait for the prompt “>”
before entering text or PDU. After the prompt a timer will be started to observe the input.
• At baud rates below 19200 it is recommended to use the line termination character only (refer to ATS3,
default <CR>) before entering the text or PDU. Use of the line termination character followed by the
response formatting character (refer to ATS4, default <LF> can cause problems.
• This command is PIN protected.
• This command is not supported in airplane mode.
12.3 AT+CMGD Delete Short Message
Description: Write command deletes a short message from preferred message storage <mem1> location
<index>.
Syntax: Test Command: AT+CMGD=?
Response: OK
Write Command: AT+CMGD=<index>
Response: OK
ERROR
+CMS ERROR: <err>
Notes:
• If there is no short message stored at the selected index, the response is OK too.
• Users should be aware that when using this AT command quickly after SIM PIN authentication, the SIM data
may not yet be accessible, resulting in a short delay before the requested AT command response is
returned. See Section 21.1 Restricted Access to SIM Data after SIM PIN Authentication.
• This command is PIN protected.
• This command is supported in airplane mode.