Robustel M1000 USB User Guide - Manual (Page 26)

Robustel GoRugged M1000 USB User Guide
RT_UG_M1000 USB_v.2.0.0
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3.3.3 Deleting a Short Message
Type AT+CMGD=x,n and then press Enter.
This is where x represents one of the following options:
“REC UNREAD” Shows received unread messages.
“REC READ” Shows received read messages.
“STO UNSENT” Shows stored unsent messages.
“STO SENT” Shows stored sent messages.
“ALL” Shows messages.
This is where n represents one of the following options:
0 Delete message at location <include the index number>
1 Delete all READ messages.
2 Delete all READ and SENT messages.
3 Delete all READ, SENT, and UNSENT messages.
4 Delete ALL messages. “REC UNREAD” Shows received unread messages.
Note: Refer to the Documentation and Software CD / AT_Commands / AT_Commands.pdf for further detail
commands information using SMS.
3.4 Cellular Network Connection
3.4.1 Overview
A cellular network is a wireless network distributed over land areas called cells, each served by at least one
fixed-location transceiver, known as a cell site or base station. We can use our mobile phones or PCs to connect to
cellular network basing on 2G (GPRS/EDGE)/3G (HSPA/EV-DO)/4G (LTE) technology.
M1000 USB offers state-of-the-art 2G (GPRS/EDGE)/3G (HSPA/EV-DO)/4G (LTE) connectivity for machine to machine
(M2M) applications, it can provide cellular network connection for end-user devices such as PCs, embedded
computers, and PLCs that are PPP-enabled and can be easily connected to the cellular network and the Internet.